LMH6518
- Gain Range: 40 dB
- Gain Step Size: 2 dB
- Combined Gain Resolution With Gsps ADCs:
8.5 mdB - Minimum Gain: −1.16 dB
- Maximum Gain: 38.8 dB
- −3 dB BW: 900 MHz
- Rise and Fall Time: <500 ps
- Recovery Time: <5 ns
- Propagation Delay Variation: 100 ps
- HD2 at 100 MHz: −50 dBc
- HD3 at 100 MHz: −53 dBc
- Input-Referred Noise (Maximum Gain): 0.98 nV/√Hz
- Overvoltage Clamps for Fast Recovery
- Power Consumption: Auxiliary Turned Off 1.1 W to 0.75 W
The LMH6518 device is a digitally controlled variable gain amplifier whose total gain is varied from −1.16 dB to 38.8 dB for a 40 dB range in 2-dB steps. The −3-dB bandwidth is 900 MHz at all gains. Gain accuracy at each setting is typically 0.1 dB. When used in conjunction with TI's Gsample/second (Gsps) ADC with adjustable full-scale (FS) range, the LMH6518 gain adjustment accommodates full scale input signals from 6.8 mVPP to 920 mVPP to get 700 mVPP nominal at the ADC input. The auxiliary output (+OUT AUX and −OUT AUX) follows the main output and is intended for use in oscilloscope trigger function circuitry but may have other uses in other applications.
The LMH6518 gain is programmed through a SPI-1 compatible serial bus. A signal path combined gain resolution of 8.5 mdB is achieved when the device's gain and the Gsps ADC’s FS input are both manipulated. Inputs and outputs are DC-coupled. The outputs are differential with individual common mode (CM) voltage control (for main and auxiliary outputs), and have a selectable bandwidth limiting circuitry (common to both main and auxiliary) of 20, 100, 200, 350, 650, 750 MHz or full bandwidth.
기술 문서
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | LMH6518 900 MHz, Digitally Controlled, Variable Gain Amplifier datasheet (Rev. D) | PDF | HTML | 2016/09/30 |
E-book | The Signal e-book: A compendium of blog posts on op amp design topics | 2017/03/28 | ||
Application note | AN-1718 Differential Amplifier Applications Up to 400 MHz (Rev. B) | 2013/05/01 | ||
Application note | AN-1719 Noise Figure Analysis Fully Differential Amplifier (Rev. A) | 2013/05/01 | ||
EVM User's guide | AN-1906 LMH6518 Evaluation Board (Rev. B) | 2013/05/01 | ||
Application note | Using High Speed Diff Amp to Drive ADCs (Rev. A) | 2013/04/26 | ||
More literature | Featured High Speed Differential Amplifiers | 2012/10/23 | ||
Application note | A Walk Along the Signal Path (High-Speed Signal Path) | 2005/03/30 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
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 | 다운로드 |
---|---|---|
WQFN (RGH) | 16 | 옵션 보기 |
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