ADA4352-2ACPZ-R7 datasheet(1/47 Pages) AD

部件名	ADA4352-2ACPZ-R7

功能描述	Compact, Dual-Channel, Precision, Programmable Gain Transimpedance Amplifier (PGTIA) with Integrated Gain Resistors

PDF	47 Pages

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制造商	AD [Analog Devices]

网页	http://www.analog.com

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Data Sheet

ADA4352-2

Compact, Dual-Channel, Precision, Programmable Gain Transimpedance Amplifier

(PGTIA) with Integrated Gain Resistors

Rev. 0; 10/24

DOCUMENT FEEDBACK

TECHNICAL SUPPORT

One Analog Wa y, Wilmington, MA 01887 -2356, U.S.A.

Tel: 781.329.47 00

FEATURES



Small, dual-channel, complete PGTIA and AFE

solution.



Small size package: 16-lead LFCSP, 3 mm × 3 mm.



Four integrated internal gain resistors (RF) per

channel:



Range 0, internal RF0 = 315 Ω



Range 1, internal RF1 = 3.5 kΩ



Range 2, internal RF2 = 40.2 kΩ



Range 3, internal RF3 = 450 kΩ



Wide input current dynamic ranges from 100

picoamps to milliamps.



Excellent DC precision:



Low offset voltage RTI: ±100 μV maximum, 25°C.



Low input offset voltage drift: ±1.0 μV/°C

maximum, −40°C to +125°C.



Low switch integrated switch impedance 19 Ω

maximum, −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 error

due to switch on-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.

APPLICATIONS



Precision current to voltage (I to V) conversion



Programmable gain TIAs



Photodetector interface and amplification



Optical networking equipment



Optical power measurement



Instrumentation (spectroscopy and

chromatography)

GENERAL DESCRIPTION

The ADA4352-2 is a compact, monolithic, dual-channel,

precision, programmable gain transimpedance

amplifier (PGTIA). The ADA4352-2 is a breakthrough

solution to precisely measure small currents over a

wide dynamic range. The precision of the ADA4352-2

over a wide temperature range of −40°C to +125°C

allows one calibration of the end equipment at room

temperature, thereby saving test time and cost. The

ADA4352-2 integrates four current-to-voltage gain

selections per channel, and the gain is programmable

using two logic pins per channel to provide a flexible,

fully functional compact PGTIA solution. Additionally,

with its robust output stage and low noise, the

ADA4352-2 can directly drive 16-bit precision analog-to-

digital converters (ADCs) such as the AD4696, providing

a complete analog front-end (AFE) to address the most

challenging wide dynamic range current measurement

applications.

The ADA4352-2 is offered in a 3 mm × 3 mm LFCSP,

reducing the printed circuit board (PCB) area by up to

ten times relative to a discrete design using standalone

operational amplifiers (op amps) and switches.

Figure 1. PGTIA Maximum Error vs. Temperature

TEMPERATURE (°C)

25

0

1000

2000

3000

4000

5000

45

65

85

105

125

RF = 450kΩ

AVDD = +5V

AVSS = –0.5V

+IN = 0V

ADA4351-2

ADA4352-2

LEADING DISCRETE SOLUTION

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