Part Number: AD8290
Function: G = 50, CMOS Sensor Amplifier with Current Excitation
Package: 16-Lead LFCSP_UQ
Manufacturer: Analog Devices
Pinouts:
Description
The AD8290 contains both an adjustable current source to drive a sensor and a difference amplifier to amplify the signal voltage. The amplifier is set for a fixed gain of 50. The IC is an excellent solution for both the drive and the sensing aspects required for pressure, temperature, and strain gage bridges. In addition, because the AD8290 operates with low power, works with a range of low supply voltages, and is available in a low profile package, it is suitable for drive/sense circuits in portable electronics as well. The device is available in a lead free 3.0 mm × 3.0 mm ×0.55 mm package and is operational over the industrial temperature range of −40°C to +85°C.
Block Diagram
Features
1. Supply voltage range : 2.6 V to 5.5 V
2. Low power
(1) 1.2 mA + 2× excitation current
(2) 0.5 μA shutdown current
3. Low input bias current: ±100 pA
4. High CMRR: 120 dB
5. Space savings: 16-lead, 3.0 mm × 3.0 mm × 0.55 mm LFCSP
6. Excitation current
(1) 300 μA to 1300 μA range
(2) Set with external resistor
Applications
1. Bridge and sensor drives
2. Portable electronics
VCC= 2.6 V to 5.0 V, TA= 25°C, CFILTER= 6.8 nF, output antialiasing capacitor = 68 nF, RSET= 3 kΩ, common-mode input = 0.6 V, unless otherwise noted.
Other data sheets are available within the file: AD8290ACPZ-R2 ,AD8290ACPZ-R7 ,AD8290ACPZ-RL
AD8290 Datasheet PDF Download
