ADA4352-2中文资料Dual-Channel, Precision, Programmable Gain Transimpedance Amplifier (PGTIA) with Integrated Gain Resistors数据手册ADI规格书

描述 Description

The ADA4352-2 is a compact, monolithic, dual-channel,precision, programmable gain transimpedanceamplifier (PGTIA). The ADA4352-2 is a breakthroughsolution for precisely measuring small currents over awide dynamic range. The precision of the ADA4352-2over a wide temperature range of −40°C to +125°Cenables users to perform one calibration of the endequipment at room temperature, thereby saving testtime and cost. The ADA4352-2 integrates four current-to-voltage gain selections per channel, and the gain isprogrammable using two logic pins per channel toprovide a flexible, fully functional compact PGTIAsolution. Additionally, with its robust output stage andlow noise, the ADA4352-2 can directly drive 16-bitprecision analog-to-digital converters (ADCs, such asAD4696), providing a complete analog front-end (AFE)to address the most challenging precision currentmeasurement applications.
The ADA4352-2 is offered in a 3 mm × 3 mm LFCSP,reducing the printed circuit board (PCB) area by up to10 times relative to a discrete design using standaloneoperational amplifiers (op amps) and switches.
Applications

Precision current to voltage (I to V) conversion
Programmable gain TIAs
Photodetector interface and amplification
Optical networking equipment
Optical power measurement
Instrumentation—spectroscopy andchromatography
Precision data acquisition systems (DAQ)

特性 Features

Small, dual-channel, complete PGTIA and AFEsolution
Small size package: 16-lead LFCSP, 3 mm × 3 mm
Integrated four internal gains per channel
Range 0, internal RF = 315 Ω
Range 1, internal RF = 3.5 kΩ
Range 2, internal RF = 40.2 kΩ
Range 3, internal RF = 450 kΩ
Wide input current dynamic ranges from 100picoamps to milliamps
Excellent DC precision
Low offset voltage: ±100 μV maximum, 25°C
Low offset voltage drift: ±0.85 μV/°C maximum,−40°C to +125°C
Low switch integrated switch impedance 19Ωmaximum, −40°C to +125°C
Excellent dynamic performance
Range 0 settling time 1 µs
Range 1 settling time 2 µs
Range 2 settling time 5 µs
Range 3 settling time 10 µs
Kelvin-connected architecture eliminates gain errordue to switch resistance over temperature.
Single-supply operation: +2.7 V to +5.5 V (dual-supply operation: ±1.85 V to ±2.75 V)
Wide gain bandwidth product: 8.5 MHz
Wide operating temperature range: −40°C to +125°C