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Hot sale original electronics AD7709A 16-Bit Sigma Delta ADC with Current Sources
16-Bit Sigma Delta ADC with Current Sources, Switchable Reference Inputs and I/O Port
Analog Devices
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 |
APPLICATIONS | Sensor Measurement |
Temperature Measurement | |
Weigh Scales | |
Portable Instrumentation | |
4–20 mA Loops | |
Pressure Measurements |
Product Description
ANSC PART# |
ANSC- AD7709A |
Part# |
AD7709A |
Type: |
Integrated Circuits |
Manufactor |
Original |
DC |
new |
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