Hot sale original electronics AD7709A 16-Bit Sigma Delta ADC with Current Sources, Switchable Reference Inputs and I/O Port_Integrated Circuit

AD7709 Product details

GENERAL DESCRIPTION

The AD7709 is a complete analog front end for low frequency measurement applications.

It contains a 16-bit Σ-Δ ADC, selectable reference inputs, three switchable matched excitation current sources,

low-side power switches, and a digital I/O port.

The 16-bit channel with PGA accepts fully differential, unipolar,

and bipolar input signal ranges from 1.024 x REFIN/128 to 1.024 x REFIN.

It can be configured as two fully differential input channels or four pseudo-differential input channels.

Signals can be converted directly from a transducer without the need for signal conditioning.

FEATURES

16-Bit Σ-Δ ADC

Programmable Gain Front End

Simultaneous 50 Hz and 60 Hz Rejection at 20 Hz Update Rate

VREF Select™ Allows Absolute and Ratiometric Measurement Capability

ISOURCE Select™

13-Bit p-p Resolution @ 20 Hz, 20 mV Range

16-Bit p-p Resolution @ 20 Hz, 2.56 V Range

16-Bit No Missing Codes

INTERFACE	3-Wire Serial
	SPI®, QSPI™, MICROWIRE™, and DSP Compatible
	Schmitt Trigger on SCLK

POWER	Specified for Single 3 V and 5 V Operation
	Normal: 1.25 mA Typ @ 3 V
	Power-Down: 7 A (32.768 kHz Crystal Running)

ON-CHIP FUNCTIONS	Rail-to-Rail Input Buffer and PGA Selectable Reference Inputs
	3 Switchable, Ratioed Current Sources for VBE Measurements
	4-Bit Digital I/O Port Low-Side Power Switches

Product Description