PGA870
- 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.
기술 자료
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | High-Speed, Fully Differential, Programmable Gain Amplifier datasheet (Rev. A) | 2011/02/15 | |
| E-book | The Signal e-book: A compendium of blog posts on op amp design topics | 2017/03/28 | ||
| User guide | TSW3725 Evaluation Module | 2011/10/25 | ||
| EVM User's guide | PGA870EVM User Guide (Rev. A) | 2010/02/03 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
PGA870EVM — PGA870 평가 모듈
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 (...)
TSW3085EVM — 광대역 전송 신호 체인 평가 보드 및 레퍼런스 디자인
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 (...)
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 (RHD) | 28 | 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