AD8222-EVALZ: 仪表放大器
The AD8222 is the first dual instrumentation amplifier in the small 4 mm × 4 mm LFCSP. It requires the same board area as a typical single instrumentation amplifier. The smaller package allows a 2× increase in channel density and a lower cost per channel, all with no compromise in performance.
The AD8222 can also be configured as a single-channel, differential output instrumentation amplifier. Differential outputs provide high noise immunity, which can be useful when the output signal must travel through a noise environment, such as with remote sensors. The configuration can also be used to drive differential input ADCs.
The AD8222 maintains a minimum CMRR of 80 dB to 4 kHz for all grades at G = 1. High CMRR over frequency allows the AD8222 to reject wideband interference and line harmonics, greatly simplifying filter requirements. The AD8222 also has a typical CMRR drift over temperature of just 0.07 µV/V/°C at G = 1.
The AD8222 operates on both single and dual supplies and only requires 2.2 mA maximum supply current for both amplifiers. It is specified over the industrial temperature range of -40°C to +85°C and is fully RoHS compliant.
For a single-channel version, see the AD8221.
AD8222-EVALZ 特点
- Two channels in small 4 mm × 4 mm LFCSP
- Gain set with 1 resistor per amplifier (G = 1 to 10,000)
- Low noise
8 nV/√Hz @ 1 kHz
0.25 µV p-p (0.1 Hz to 10 Hz) - Excellent ac performance
150 kHz bandwidth (G = 100)
13 µs settling time to 0.001% - High accuracy dc performance (B grade)
60 µV maximum input offset voltage
0.3 µV/°C maximum input offset drift
1.0 nA maximum input bias current
126 dB minimum CMRR (G = 100) - Differential output option (single channel)
Fully specified
Adjustable common-mode output - Supply range: ±2.3 V to ±18 V
AD8222-EVALZ 功能框图
AD8222 框图
AD8222-EVALZ 技术指标
| Single/Dual Supply | Dual | Vnoise RTI 1-10 Hz µVp-p | 0.25µV p-p |
| Gain Setting Method | Resistor | Temperature Range | -40 to +85 |
| Gain Range (min to max) | 1000 | Supply Current | 0.9mA |
| Bandwidth G=10 (kHz typ) | 750kHz |
AD8222 订购指南
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD8222-EVALZ | 量产 | 评估板 | 16 | 工业 |
| AD8222ACPZ-R7 | 量产 | 16 ld LFCSP (4x4mm, 2.50mm exposed pad) | 16 | 工业 |
| AD8222ACPZ-RL | 量产 | 16 ld LFCSP (4x4mm, 2.50mm exposed pad) | 16 | 工业 |
| AD8222ACPZ-WP | 量产 | 16 ld LFCSP (4x4mm, 2.50mm exposed pad) | 16 | 工业 |
| AD8222BCPZ-R7 | 量产 | 16 ld LFCSP (4x4mm, 2.50mm exposed pad) | 16 | 工业 |
| AD8222BCPZ-RL | 量产 | 16 ld LFCSP (4x4mm, 2.50mm exposed pad) | 16 | 工业 |
| AD8222BCPZ-WP | 量产 | 16 ld LFCSP (4x4mm, 2.50mm exposed pad) | 16 | 工业 |
| AD8222HACPZ-R7 | 量产 | 16 ld LFCSP (4x4mm, 2.50mm exposed pad) | 16 | 工业 |
| AD8222HACPZ-RL | 量产 | 16 ld LFCSP (4x4mm, 2.50mm exposed pad) | 16 | 工业 |
| AD8222HACPZ-WP | 量产 | 16 ld LFCSP (4x4mm, 2.50mm exposed pad) | 16 | 工业 |
| AD8222HBCPZ-R7 | 量产 | 16 ld LFCSP (4x4mm, 2.50mm exposed pad) | 16 | 工业 |
| AD8222HBCPZ-RL | 量产 | 16 ld LFCSP (4x4mm, 2.50mm exposed pad) | 16 | 工业 |
| AD8222HBCPZ-WP | 量产 | 16 ld LFCSP (4x4mm, 2.50mm exposed pad) | 16 | 工业 |
AD8222-EVALZ 应用技术支持与电子电路设计开发资源下载
- AD8222-EVALZ 评估版资料下载. PDF
- ADI 模拟器件公司比较器产品选型指南 . PDF
- 仪表放大器设计者指南(第三版) . PDF
- Analog Devices, Inc. 美国模拟器件公司产品订购手册 .PDF