AD8222:  仪表放大器LFCSP-16封装

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 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 功能框图

AD8222 框图

AD8222 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 应用技术支持与电子电路设计开发资源下载

1. AD8222 数据手册DataSheet 下载 . PDF
2. AD8222 评估版资料下载. PDF
3. ADI 模拟器件公司比较器产品选型指南 . PDF
4. 仪表放大器设计者指南(第三版) . PDF
5. Analog Devices, Inc. 美国模拟器件公司产品订购手册 .PDF