THS4508
- 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 VPP, 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.
기술 자료
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | Wideband Low Noise Low Distortion Fully Differential Amplifier datasheet (Rev. E) | 2008/09/09 | |
E-book | The Signal e-book: A compendium of blog posts on op amp design topics | 2017/03/28 | ||
Application note | Driving High-Speed ADCs: Circuit Topologies and System-Level Parameters (Rev. A) | 2010/09/10 | ||
Analog Design Journal | Low-power, high-intercept interface to the ADS5424, 105-MSPS converter | 2005/10/10 | ||
Analog Design Journal | Analysis of fully differential amplifiers | 2005/03/11 | ||
Analog Design Journal | Fully differential amplifiers applications:Line termination,driving high-speed.. | 2005/03/02 | ||
Application note | Noise Analysis for High Speed Op Amps (Rev. A) | 2005/01/17 |
설계 및 개발
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THS4508EVM — THS4508 평가 모듈
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 (...)
PSPICE-FOR-TI — TI 설계 및 시뮬레이션 툴용 PSpice®
TI 설계 및 시뮬레이션 환경용 PSpice는 기본 제공 라이브러리를 이용해 복잡한 혼합 신호 설계를 시뮬레이션할 수 있습니다. 레이아웃 및 제작에 (...)
TINA-TI — SPICE 기반 아날로그 시뮬레이션 프로그램
패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
---|---|---|
VQFN (RGT) | 16 | Ultra Librarian |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치