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PGA870

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High-Speed Fully Differential Programmable Gain Amplifier

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High-Speed Fully Differential Programmable Gain Amplifier

PGA870

ACTIVE
Data sheet Order now

Product details

Parameters

PGA/VGA VGA Number of channels (#) 1 BW @ Acl (MHz) 650 Vs (Max) (V) 5.25 Vs (Min) (V) 4.75 Acl, min spec gain (V/V) 0.27 Gain (Max) (dB) 20 Slew rate (Typ) (V/us) 2900 Operating temperature range (C) -40 to 85 open-in-new Find other Programmable & variable gain amplifiers (PGA/VGA)

Package | Pins | Size

VQFN (RHD) 28 25 mm² 5 x 5 open-in-new Find other Programmable & variable gain amplifiers (PGA/VGA)

Features

  • Wideband +5-V Operation: 650-MHz Bandwidth
  • Low Impedance, Voltage Mode Output
  • Wide Gain Range: –11.5 dB to +20 dB
  • Precise 0.5-dB Gain Steps
    Step-to-Step Gain Error = ±0.03 dB
  • HD2: –93 dBc at 100 MHz
  • HD3: –88 dBc at 100 MHz
  • IMD3: –98 dBc at 100 MHz, –95 dBc at 200 MHz
  • OIP3: +47 dBm at 100 MHz;
    Exceeds +45 dBm for Frequencies to 300 MHz
  • Flexible Gain Control Interface:
    • Supports latched and unlatched options
    • Gain may be set in power-down state
    • Fast setup and hold times: 2.5 ns
  • Low Disable Current: 2 mA
  • Pb-Free (RoHS-Compliant) and Green Package
  • APPLICATIONS
    • Programmable Gain IF Amplifier:
      • Differential signal chains
      • Single-ended to differential conversion
    • Fast Gain Control Loops for:
      • Test/measurement
      • Digital radio signal chains
    • ADC Driver for Wireless Base Station Signal Chains: GSM, WCDMA, MC-GSM
    • Radar/Ranging Systems

    PowerPAD is a trademark of Texas Instruments.
    All other trademarks are the property of their respective owners.

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Description

The PGA870 is a wideband programmable-gain amplifier (PGA) for high-speed signal chain and data acquisition systems. The PGA870 has been optimized to provide high bandwidth, low distortion, and low noise, making it ideally suited as a 14-bit analog-to-digital converter (ADC) driver for wireless base station signal chain applications. The wide gain range of –11.5 dB to +20 dB can be adjusted in 0.5-dB gain steps through a 6-bit control word applied to the parallel interface. The gain control interface may be configured as a level-triggered latch or an edge-triggered latch, or it may be placed in an unlatched (transparent) mode. In addition to the 6-bit gain control, the PGA870 contains a power-down pin (PD) that can be used to put the device into a low-current, power-down mode. In this mode, the quiescent current drops to 2 mA, but the gain control circuitry remains active, allowing the gain of the PGA870 to be set before device power-up. The PGA870 is offered in a QFN-28 PowerPAD™ package.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 5
Type Title Date
* Datasheet High-Speed, Fully Differential, Programmable Gain Amplifier datasheet (Rev. A) Feb. 15, 2011
White papers The Signal e-book: A compendium of blog posts on op amp design topics Mar. 28, 2017
Technical articles How to evaluate a transimpedance amplifier (part 2) Mar. 12, 2014
User guides TSW3725 Evaluation Module Oct. 25, 2011
User guides PGA870EVM User Guide (Rev. A) Feb. 03, 2010

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
Description

The ADS4122EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS4122 device, an extremely low power 12-bit 65 MSPS analog to digital converter. The ADC features a configurable parallel DDR LVDS or CMOS outputs. The EVM provides a flexible (...)

Features
  • Transformer coupled analog input path
  • Amplifier path based on the THS4509
  • Configurable CMOS or DDR LVDS parallel output modes
  • Transformer coupled clock input path
  • CDCE72010 Jitter Clock Synchronizer and Jitter Cleaner clocking circuit
  • DDR LVDS output and capture ability via TSW1405EVM capture card
  • USB (...)
    • View details
    EVALUATION BOARDS Download
    document-generic User guide
    Description

    The ADS4125EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS4125 device, an extremely low power 12-bit 125 MSPS analog to digital converter. The ADC features a configurable parallel DDR LVDS or CMOS outputs. The EVM provides a flexible (...)

    Features
  • Transformer coupled analog input path
  • Amplifier path based on the THS4509
  • Configurable CMOS or DDR LVDS parallel output modes
  • Transformer coupled clock input path
  • CDCE72010 Jitter Clock Synchronizer and Jitter Cleaner clocking circuit
  • DDR LVDS output and capture ability via TSW1405EVM capture card
  • USB (...)
    • View details
    EVALUATION BOARDS Download
    document-generic User guide
    Description

    The ADS4126EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS4126 device, an extremely low power 12-bit 160 MSPS analog to digital converter. The ADC features a configurable parallel DDR LVDS or CMOS outputs. The EVM provides a flexible (...)

    Features
  • Transformer coupled analog input path
  • Amplifier path based on the THS4509
  • Configurable CMOS or DDR LVDS parallel output modes
  • Transformer coupled clock input path
  • CDCE72010 Jitter Clock Synchronizer and Jitter Cleaner clocking circuit
  • DDR LVDS output and capture ability via TSW1405EVM capture card
  • USB (...)
    • View details
    EVALUATION BOARDS Download
    document-generic User guide
    Description

    The ADS4129EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments' ADS4129 device, an extremely low power 12-bit 250 MSPS analog to digital converter. The ADC features a configurable parallel DDR LVDS or CMOS outputs. The EVM provides a flexible environment to (...)

    Features
  • Transformer coupled analog input path
  • Amplifier path based on the THS4509
  • Configurable CMOS or DDR LVDS parallel output modes
  • Transformer coupled clock input path
  • CDCE72010 Jitter Clock Synchronizer and Jitter Cleaner clocking circuit
  • DDR LVDS output and capture ability via TSW1400EVM or TSW1405EVM (...)
    • View details
    EVALUATION BOARDS Download
    document-generic User guide
    Description

    The ADS4142EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS4142 device, an extremely low power 14-bit 65 MSPS analog to digital converter. The ADC features a configurable parallel DDR LVDS or CMOS outputs. The EVM provides a flexible (...)

    Features
  • Transformer coupled analog input path
  • Amplifier path based on the THS4509
  • Configurable CMOS or DDR LVDS parallel output modes
  • Transformer coupled clock input path
  • CDCE72010 Jitter Clock Synchronizer and Jitter Cleaner clocking circuit
  • DDR LVDS output and capture ability via TSW1405EVM capture card
  • USB (...)
    • View details
    EVALUATION BOARDS Download
    document-generic User guide
    Description

    The ADS4145EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS4145 device, an extremely low power 14-bit 125 MSPS analog to digital converter. The ADC features a configurable parallel DDR LVDS or CMOS outputs. The EVM provides a flexible (...)

    Features
  • Transformer coupled analog input path
  • Amplifier path based on the THS4509
  • Configurable CMOS or DDR LVDS parallel output modes
  • Transformer coupled clock input path
  • CDCE72010 Jitter Clock Synchronizer and Jitter Cleaner clocking circuit
  • DDR LVDS output and capture ability via TSW1405EVM capture card
  • USB (...)
    • View details
    EVALUATION BOARDS Download
    document-generic User guide
    Description

    The ADS4146EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS4146 device, an extremely low power 14-bit 160 MSPS analog to digital converter. The ADC features a configurable parallel DDR LVDS or CMOS outputs. The EVM provides a flexible (...)

    Features
  • Transformer coupled analog input path
  • Amplifier path based on the THS4509
  • Configurable CMOS or DDR LVDS parallel output modes
  • Transformer coupled clock input path
  • CDCE72010 Jitter Clock Synchronizer and Jitter Cleaner clocking circuit
  • DDR LVDS output and capture ability via TSW1405EVM capture card
  • USB (...)
    • View details
    EVALUATION BOARDS Download
    document-generic User guide
    299
    Description

    The ADS41B25EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS41B25 device, an extremely low power 12-bit 125 MSPS analog to digital converter with integrated high-impedance input buffer. The ADC features a configurable parallel DDR LVDS or CMOS (...)

    Features
  • Transformer coupled analog input path
  • Amplifier path based on the THS4509
  • Configurable CMOS or DDR LVDS parallel output modes
  • Transformer coupled clock input path
  • CDCE72010 Jitter Clock Synchronizer and Jitter Cleaner clocking circuit
  • DDR LVDS output and capture ability via TSW1400EVM or TSW1405EVM (...)
    • View details
    EVALUATION BOARDS Download
    document-generic User guide
    299
    Description

    The ADS41B29EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS41B29 device, an extremely low power 12-bit 250 MSPS analog to digital converter with integrated high-impedance input buffer. The ADC features a configurable parallel DDR LVDS or CMOS (...)

    Features
  • Transformer coupled analog input path
  • Amplifier path based on the THS4509
  • Configurable CMOS or DDR LVDS parallel output modes
  • Transformer coupled clock input path
  • CDCE72010 Jitter Clock Synchronizer and Jitter Cleaner clocking circuit
  • DDR LVDS output and capture ability via TSW1400EVM or TSW1405EVM (...)
    • View details
    EVALUATION BOARDS Download
    document-generic User guide
    Description
  • The ADS4229EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS4229 device, an extremely low power dual channel 12-bit 250 MSPS analog to digital converter. The ADC features a configurable parallel DDR LVDS or CMOS outputs. The EVM provides a (...)
    • Features
  • Transformer coupled analog input path
  • Amplifier path based on the THS4509
  • Configurable CMOS or DDR LVDS parallel output modes
  • Transformer coupled clock input path
  • CDCE72010 Jitter Clock Synchronizer and Jitter Cleaner clocking circuit
  • DDR LVDS output and capture ability via TSW1400EVM or TSW1405EVM (...)
    • View details
    EVALUATION BOARDS Download
    document-generic User guide
    Description

    The ADS4242EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS4242 device, an extremely low power dual channel 14-bit 65 MSPS analog to digital converter. The ADC features a configurable parallel DDR LVDS or CMOS outputs. The EVM provides a (...)

    Features
  • Transformer coupled analog input path
  • Amplifier path based on the THS4509
  • Configurable CMOS or DDR LVDS parallel output modes
  • Transformer coupled clock input path
  • CDCE72010 Jitter Clock Synchronizer and Jitter Cleaner clocking circuit
  • DDR LVDS output and capture ability via TSW1400EVM or TSW1405EVM (...)
    • View details
    EVALUATION BOARDS Download
    document-generic User guide
    Description

    The ADS4245EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS4245 device, an extremely low power dual channel 14-bit 125 MSPS analog to digital converter. The ADC features a configurable parallel DDR LVDS or CMOS outputs. The EVM provides a (...)

    Features
  • Transformer coupled analog input path
  • Amplifier path based on the THS4509
  • Configurable CMOS or DDR LVDS parallel output modes
  • Transformer coupled clock input path
  • CDCE72010 Jitter Clock Synchronizer and Jitter Cleaner clocking circuit
  • DDR LVDS output and capture ability via TSW1400EVM or TSW1405EVM (...)
    • View details
    EVALUATION BOARDS Download
    document-generic User guide
    Description

    The ADS4246EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS4246 device, an extremely low power dual channel 14-bit 160 MSPS analog to digital converter. The ADC features a configurable parallel DDR LVDS or CMOS outputs. The EVM provides a (...)

    Features
  • Transformer coupled analog input path
  • Amplifier path based on the THS4509
  • Configurable CMOS or DDR LVDS parallel output modes
  • Transformer coupled clock input path
  • CDCE72010 Jitter Clock Synchronizer and Jitter Cleaner clocking circuit
  • DDR LVDS output and capture ability via TSW1400EVM or TSW1405EVM (...)
    • View details
    EVALUATION BOARDS Download
    document-generic User guide
    Description

    The ADS4249EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS4249 device, an extremely low power dual channel 14-bit 250 MSPS analog to digital converter. The ADC features a configurable parallel DDR LVDS or CMOS outputs. The EVM provides a (...)

    Features
  • Transformer coupled analog input path
  • Amplifier path based on the THS4509
  • Configurable CMOS or DDR LVDS parallel output modes
  • Transformer coupled clock input path
  • CDCE72010 Jitter Clock Synchronizer and Jitter Cleaner clocking circuit
  • DDR LVDS output and capture ability via TSW1400EVM or TSW1405EVM (...)
    • View details
    EVALUATION BOARDS Download
    document-generic User guide
    Description

    The ADS58C28EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments' ADS58C28 device, a dual channel 11-bit 200 MSPS analog to digital converter featuring TI's SNRBoost technology. The ADC EVM features a DDR LVDS data output which is compatible with TI's TSW1200 (...)

    View details
    EVALUATION BOARDS Download
    document-generic User guide
    299
    Description

    The The PGA870EVM is an evaluation module (EVM) for the PGA870 wideband programmable gain amplifier (PGA) for high-speed signal chain and data acquisition systems.

    The PGA870EVM allows for evaluation of all aspects of the PGA870 device. Complete circuit descriptions, schematic diagrams, and a bill of (...)

    Features
    • Onboard switches for device power-up and power-down, gain setting, and gain latch modes
    • SMA connectors for input and output signals and a DB25 connector to allow gain control via an external control source
    • An interface board that allows the user to control the PGA870 gain from an external USB (...)
    View details
    EVALUATION BOARDS Download
    document-generic User guide
    399
    Description

    The TSW3085 Evalutaion Module is a circuit board that allows system designers to evaluate the combined performance of Texas Instruments' transmit signal chain with the LMK04806B (formally National Semiconductor) low noise clock generator/jitter cleaner. For ease of use as a complete RF transmit (...)

    Features
  • Includes LMK04806B for clock generation and jitter cleaning
  • Direct connection to TSW3100 signal generator
  • Comprehensive test capability for the transmitter (DAC3482 dual DAC and TRF3705 IQ Modulator) at analog baseband, IF and RF outputs
  • Software support with a full featured GUI for easy testing and (...)
    • View details

    Software development

    DRIVERS & LIBRARIES Download
    ADS41B49 14-Bit, 250-MSPS Analog-to-Digital Converter Evaluation Module
    ADS41B49EVM — The ADS41B49EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS41B49 device, an extremely low power 14-bit 250 MSPS analog to digital converter with integrated high-impedance input buffer. The ADC features a configurable parallel DDR LVDS or CMOS (...)
    299
    Features
  • Transformer coupled analog input path
  • Amplifier path based on the THS4509
  • Configurable CMOS or DDR LVDS parallel output modes
  • Transformer coupled clock input path
  • CDCE72010 Jitter Clock Synchronizer and Jitter Cleaner clocking circuit
  • DDR LVDS output and capture ability via TSW1400EVM or TSW1405EVM (...)
    • View details
    DRIVERS & LIBRARIES Download
    ADS4222 Dual-Channel, 12-Bit, 65-MSPS Analog-to-Digital Converter Evaluation Module
    ADS4222EVM —
  • The ADS4222EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS4222 device, an extremely low power dual channel 12-bit 65 MSPS analog to digital converter. The ADC features a configurable parallel DDR LVDS or CMOS outputs. The EVM provides a (...)
    •
    Features
  • Transformer coupled analog input path
  • Amplifier path based on the THS4509
  • Configurable CMOS or DDR LVDS parallel output modes
  • Transformer coupled clock input path
  • CDCE72010 Jitter Clock Synchronizer and Jitter Cleaner clocking circuit
  • DDR LVDS output and capture ability via TSW1400EVM or TSW1405EVM (...)
    • View details
    DRIVERS & LIBRARIES Download
    ADS4225 Dual-Channel, 12-Bit, 125-MSPS Analog-to-Digital Converter Evaluation Module
    ADS4225EVM — The ADS4225EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS4225 device, an extremely low power dual channel 12-bit 125 MSPS analog to digital converter. The ADC features a configurable parallel DDR LVDS or CMOS outputs. The EVM provides a (...)
    Features
  • Transformer coupled analog input path
  • Amplifier path based on the THS4509
  • Configurable CMOS or DDR LVDS parallel output modes
  • Transformer coupled clock input path
  • CDCE72010 Jitter Clock Synchronizer and Jitter Cleaner clocking circuit
  • DDR LVDS output and capture ability via TSW1400EVM or TSW1405EVM (...)
    • View details

    Design tools & simulation

    SIMULATION MODELS Download
    SLOM168.TSC (115 KB) - TINA-TI Reference Design
    SIMULATION MODELS Download
    SLOM169.ZIP (65 KB) - TINA-TI Spice Model
    SIMULATION MODELS Download
    SLOM170.ZIP (28 KB) - PSpice Model
    SIMULATION TOOLS Download
    PSpice® for TI design and simulation tool
    PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
    Features
    • Leverages Cadence PSpice Technology
    • Preinstalled library with a suite of digital models to enable worst-case timing analysis
    • Dynamic updates ensure you have access to most current device models
    • Optimized for simulation speed without loss of accuracy
    • Supports simultaneous analysis of multiple products
    • (...)
    View details
    SIMULATION TOOLS Download
    SPICE-based analog simulation program
    TINA-TI — TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
    document-generic User guide

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