AD8145: 差分放大器
The AD8145 is a triple, low cost, differential-to-single-ended receiver specifically designed for receiving red-green-blue (RGB) video signals over twisted pair cable or differential printed circuit board traces. It can also be used to receive any type of analog signal or high speed data transmission. Two auxiliary comparators with hysteresis are provided that can be used to decode video sync signals that are encoded on the received common-mode voltages, to receive digital signals, or as general-purpose comparators. The AD8145 can be used in conjunction with the AD8133 or AD8134 triple differential drivers to provide a complete low cost solution for RGB over Category 5 UTP cable applications, including KVM.
The excellent common-mode rejection (69 dB @ 10 MHz) of the AD8145 allows for the use of low cost, unshielded twisted pair cables in noisy environments.
The AD8145 is available in a 5 mm × 5 mm, 32-lead LFCSP and is rated to work over the extended industrial temperature range of -40°C to +105°C.
AD8143 特点
- High speed: 500 MHz, 2000 V/us @ G = 1, Vo = 2 V p-p
- 0.1 dB flatness out to 100 MHz, G = 1
- High CMRR: 69 dB @ 10 MHz
- High differential input impedance: 1 MΩ
- Wide input common-mode range: ±3.8 V (±5 V supplies)
- On-chip gain-settling resistors
- Can be configured for gain of 1 or 2
- Fast settling: 12 ns to 0.1% @ 2 V p-p
- Low input-referred noise: 13 nV/√Hz
- Disable feature
- Small packaging: 32-lead, 5 mm × 5 mm LFCSP
AD8143 功能框图
AD8145 功能框图
AD8143 技术指标
| -3 dB BW (MHz) | 500MHz | Distortion (2nd) (dBc) | -67dBc |
| Minimum Gain (Acl) | 1 | Distortion (3rd) (dBc) | -88dBc |
| Supply Current | 48.5mA | Package | 32-Lead CSP |
| Slew Rate (V/us) | 2100V/us |
AD8143 订购指南
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD8145YCPZ-R2 | 量产 | 32 ld LFCSP (5x5mm) w/3.3mm exposed pad | 32 | 工业 |
| AD8145YCPZ-R7 | 量产 | 32 ld LFCSP (5x5mm) w/3.3mm exposed pad | 32 | 工业 |
| AD8145YCPZ-RL | 量产 | 32 ld LFCSP (5x5mm) w/3.3mm exposed pad | 32 | 工业 |