Product details

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 Architecture Fully Differential ADC Driver Slew rate (Typ) (V/us) 2900 Operating temperature range (C) -40 to 85 Features Shutdown, Digital Gain Set, Single-ended to Differential conversion
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 Architecture Fully Differential ADC Driver Slew rate (Typ) (V/us) 2900 Operating temperature range (C) -40 to 85 Features Shutdown, Digital Gain Set, Single-ended to Differential conversion
VQFN (RHD) 28 25 mm² 5 x 5
  • 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.

  • 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.

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.

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.

Download

Technical documentation

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

Design & development

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

Evaluation board

PGA870EVM — PGA870 evaluation module

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 (...)

In stock
Limit: 1
Evaluation board

TSW3085EVM — Wideband Transmit Signal Chain Evaluation Board and Reference Design

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 (...)

In stock
Limit: 3
Simulation model

PGA870 TINA-TI Reference Design

SLOM168.TSC (115 KB) - TINA-TI Reference Design
Simulation model

PGA870 TINA-TI Spice Model

SLOM169.ZIP (65 KB) - TINA-TI Spice Model
Simulation model

PGA870 PSpice Model (Rev. A)

SLOM170A.ZIP (80 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

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 (...)
Package Pins Download
VQFN (RHD) 28 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos