VCA821
- 710-MHz Small-Signal Bandwidth
(G = +2 V/V) - 320 MHz, 4 VPP Bandwidth (G = +10 V/V)
- 0.1-dB Gain Flatness to 135 MHz
- 2500 V/µs Slew Rate
- > 40-dB Gain Adjust Range
- High Gain Accuracy: 20 dB ±0.3 dB
- High Output Current: ±90 mA
The VCA821 device is a DC-coupled, wideband, linear in dB, continuously variable, voltage-controlled gain amplifier. It provides a differential input to single-ended conversion with a high-impedance gain control input used to vary the gain down 40 dB from the nominal maximum gain set by the gain resistor (RG) and feedback resistor (RF).
The VCA821 device internal architecture consists of two input buffers and an output current feedback amplifier stage integrated with a multiplier core to provide a complete variable gain amplifier (VGA) system that does not require external buffering. The maximum gain is set externally with two resistors, providing flexibility in designs. The maximum gain is intended to be set between 6 dB and 32 dB. Operating from ±5-V supplies, the gain control voltage for the VCA821 device adjusts the gain linearly in dB as the control voltage varies from 0V to +2 V. For example, set at a maximum gain of 20 dB, the VCA821 device provides 20 dB, at VG = +2 V, to less than –20 dB at VG = 0 V. The VCA821 device offers excellent gain linearity. For a 20-dB maximum gain, and a gain-control input voltage varying between +1 V and +2 V, the gain does not deviate by more than ±0.3 dB (maximum at +25°C).
기술 문서
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | VCA821 Ultra-Wideband, > 40-dB Gain Adjust Range, Linear in dB Variable Gain Amplifier datasheet (Rev. D) | PDF | HTML | 2016/05/24 |
E-book | The Signal e-book: A compendium of blog posts on op amp design topics | 2017/03/28 | ||
Application note | Implementating a Variable-Length Cat5e Cable Equalizer | 2010/04/25 | ||
Application note | Wireline Data Transmission and Reception | 2010/01/27 |
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 |
---|---|---|
SOIC (D) | 14 | 옵션 보기 |
VSSOP (DGS) | 10 | 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