THS4508

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Datenblatt

document-pdfAcrobat THS4508 Wideband Low Noise Low Distortion Fully Differential Amplifier datasheet (Rev. E) (Englisch)

THS4508

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Number of channels

1

Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V)

3.75

Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V)

5.25

BW at Acl (MHz)

2000

Acl, min spec gain (V/V)

2

Slew rate (typ) (V/µs)

6400

Architecture

Bipolar, Fully Differential ADC Driver

Vn at flatband (typ) (nV√Hz)

2.3

Iq per channel (typ) (mA)

39.2

Rail-to-rail

In to V-

Vos (offset voltage at 25°C) (max) (mV)

4

Operating temperature range (°C)

-40 to 85

Iout (typ) (mA)

96

2nd harmonic (dBc)

104

3rd harmonic (dBc)

105

Frequency of harmonic distortion measurement (MHz)

10

GBW (typ) (MHz)

3000

Input bias current (max) (pA)

15500000

Features

Decompensated, Shutdown

CMRR (typ) (dB)

90

Rating

Catalog

Number of channels

1

Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V)

3.75

Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V)

5.25

BW at Acl (MHz)

2000

Acl, min spec gain (V/V)

2

Slew rate (typ) (V/µs)

6400

Architecture

Bipolar, Fully Differential ADC Driver

Vn at flatband (typ) (nV√Hz)

2.3

Iq per channel (typ) (mA)

39.2

Rail-to-rail

In to V-

Vos (offset voltage at 25°C) (max) (mV)

4

Operating temperature range (°C)

-40 to 85

Iout (typ) (mA)

96

2nd harmonic (dBc)

104

3rd harmonic (dBc)

105

Frequency of harmonic distortion measurement (MHz)

10

GBW (typ) (MHz)

3000

Input bias current (max) (pA)

15500000

Features

Decompensated, Shutdown

CMRR (typ) (dB)

90

Rating

Catalog

VQFN (RGT)

16

9 mm² (3 mm × 3 mm)

Fully Differential Architecture
Common-Mode Input Range Includes the
Negative Rail
Minimum Gain of 2 V/V (6 dB)
Bandwidth: 2 GHz
Slew Rate: 6400 V/µs
1% Settling Time: 2 ns
HD₂: -72 dBc at 100 MHz
HD₃: -79 dBc at 100 MHz
OIP₂: 78 dBm at 70 MHz
OIP₃: 42 dBm at 70 MHz
Input Voltage Noise: 2.3 nV/√Hz (f > 10 MHz)
Noise Figure: 19.2 dB (G = 10 dB)
Output Common-Mode Control
5-V Power Supply Current: 39.2 mA
Power-Down Capability: 0.65 mA
APPLICATIONS
- 5-V Data-Acquisition Systems
- High Linearity ADC Amplifier
- Wireless Communication
- Medical Imaging
- Test and Measurement

Fully Differential Architecture
Common-Mode Input Range Includes the
Negative Rail
Minimum Gain of 2 V/V (6 dB)
Bandwidth: 2 GHz
Slew Rate: 6400 V/µs
1% Settling Time: 2 ns
HD₂: -72 dBc at 100 MHz
HD₃: -79 dBc at 100 MHz
OIP₂: 78 dBm at 70 MHz
OIP₃: 42 dBm at 70 MHz
Input Voltage Noise: 2.3 nV/√Hz (f > 10 MHz)
Noise Figure: 19.2 dB (G = 10 dB)
Output Common-Mode Control
5-V Power Supply Current: 39.2 mA
Power-Down Capability: 0.65 mA
APPLICATIONS
- 5-V Data-Acquisition Systems
- High Linearity ADC Amplifier
- Wireless Communication
- Medical Imaging
- Test and Measurement

The THS4508 is a wideband, fully-differential operational amplifier designed for single-supply 5-V data acquisition systems. It has very low noise at 2.3 nV/√Hz, and extremely low harmonic distortion of -72 dBc HD₂ and -79 dBc HD₃ at 100 MHz with 2 V_PP, G = 10 dB, and 1-Ω load. Slew rate is very high at 6400 Vµs, and with settling time of 2 ns to 1% (2 V step), it is ideal for pulsed applications. It is designed for minimum gain of 6 dB, but is optimized for gain of 10 dB.

To allow for dc coupling to analog-to-digital converters (ADCs), its unique output common-mode control circuit maintains the output common-mode voltage within 5-mV offset (typical) from the set voltage, when set within 0.5 V of mid-supply. The common-mode set point is set to mid-supply by internal circuitry, which may be over-driven from an external source.

The THS4508 is a high-performance amplifier that has been optimized for use in high performance, 5-V single-supply data acquisition systems. The output has been optimized for best performance with its common-mode voltages set to mid-supply, and the input has been optimized for best performance with its common-mode voltage set to 0.7 V. High performance at a low power-supply voltage is ideal for high-performance, single-supply 5-V data-acquisition systems with a minimum parts count. The combined performance of the THS4508 in a gain of 10-dB driving the ADS5500 ADC, sampling at 125 MSPS, is 82-dBc SFDR, and 68.3-dBc SNR with a -1-dBFS signal at 70 MHz.

The THS4508 is offered in a quad 16-pin leadless QFN package (RGT), and is characterized for operation over the full industrial temperature range from -40°C to +85°C.

The THS4508 is a wideband, fully-differential operational amplifier designed for single-supply 5-V data acquisition systems. It has very low noise at 2.3 nV/√Hz, and extremely low harmonic distortion of -72 dBc HD₂ and -79 dBc HD₃ at 100 MHz with 2 V_PP, G = 10 dB, and 1-Ω load. Slew rate is very high at 6400 Vµs, and with settling time of 2 ns to 1% (2 V step), it is ideal for pulsed applications. It is designed for minimum gain of 6 dB, but is optimized for gain of 10 dB.

To allow for dc coupling to analog-to-digital converters (ADCs), its unique output common-mode control circuit maintains the output common-mode voltage within 5-mV offset (typical) from the set voltage, when set within 0.5 V of mid-supply. The common-mode set point is set to mid-supply by internal circuitry, which may be over-driven from an external source.

The THS4508 is a high-performance amplifier that has been optimized for use in high performance, 5-V single-supply data acquisition systems. The output has been optimized for best performance with its common-mode voltages set to mid-supply, and the input has been optimized for best performance with its common-mode voltage set to 0.7 V. High performance at a low power-supply voltage is ideal for high-performance, single-supply 5-V data-acquisition systems with a minimum parts count. The combined performance of the THS4508 in a gain of 10-dB driving the ADS5500 ADC, sampling at 125 MSPS, is 82-dBc SFDR, and 68.3-dBc SNR with a -1-dBFS signal at 70 MHz.

The THS4508 is offered in a quad 16-pin leadless QFN package (RGT), and is characterized for operation over the full industrial temperature range from -40°C to +85°C.

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Technische Dokumentation

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*	Datenblatt	THS4508 Wideband Low Noise Low Distortion Fully Differential Amplifier datasheet (Rev. E)		09.09.2008
	E-book	The Signal e-book: A compendium of blog posts on op amp design topics	PDF \| HTML	28.03.2017
	Anwendungshinweis	Driving High-Speed ADCs: Circuit Topologies and System-Level Parameters (Rev. A)		10.09.2010
	Analog Design Journal	Low-power, high-intercept interface to the ADS5424, 105-MSPS converter		10.10.2005
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Design und Entwicklung

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Evaluierungsplatine

THS4508EVM — THS4508-Evaluierungsmodul

THS4508EVM is an evaluation Module for the RGT (16 pin leadless QFN) package.

The THS4508EVM is designed to demonstrate the functionality and versatility of the device. The EVM is ready for power, signal source, and test instruments. The EVM is configured for a gain of 10 dB and 50 ohm input and (...)

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