AD7731BNZ - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD7731BNZ
Manufacturer

ADI
ChipWorker Part#

CW1416630
Category

Analog to Digital, ADC IC
Package

DIP-24
Description

ANALOG DEVICES AD7731BNZ Analog to Digital Converter, 24Bit, 6.4KSPS, Single, 2.7V, 5.25V, DIP
Documentation

Datasheet

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AD7731BNZ Specifications

Attribute	Attribute Value

Part Number	AD7731BNZ
Manufacturer	ADI
ChipWorker Part#	CW1416630
Category	Analog to Digital, ADC IC
Documentation	Datasheet
Mounting Style	Through Hole
Number of Pins	24 Pin
Case/Package	DIP-24
Supply Voltage (DC)	2.70V (min)
Supply Current	10.3 mA
Number of Circuits	1 Circuit
Number of Channels	3 Channel
Number of Positions	24 Position
Number of Bits	24 Bit
Power Dissipation	67.5 mW
Sample Rate	6.4 ksps
Resolution (Bits)	24.0 Bit
Input Impedance	9.00 GΩ
Number of ADCs	1 ADC
Number of Inputs	3, 5 Input
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
Power Dissipation (Max)	67.5 mW
Number of Input Channels	3 Channel
Supply Voltage (Max)	5.25 V
Supply Voltage (Min)	2.7 V
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Size-Length	32.51 mm
Size-Width	7.11 mm
Size-Height	4.95 mm
Operating Temperature	-40℃ ~ 85℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Contains Lead
REACH SVHC Compliance	No SVHC
Mil-Spec	No
REACH SVHC Compliance Edition	2015/12/17

Product Description

Product Details
The AD7731 is a complete analog front-end for process control applications. The device has a proprietary programmable gain front end that allows it to accept a range of input signal ranges, including low level signals, directly from a transducer. The sigmadelta architecture of the part consists of an analog modulator and a low pass programmable digital filter, allowing adjustment of filter cutoff, output rate and settling time.
The part features three buffered differential programmable gain analog inputs (which can be configured as five pseudo-differential inputs), as well as a differential reference input. The part operates from a single +5 V supply and accepts seven unipolar analog input ranges: 0 to +20 mV, +40 mV, +80 mV, +160 mV, +320 mV, +640 mV and +1.28 V, and seven bipolar ranges: ±20 mV, ±40 mV, ±80 mV, ±160 mV, ±320 mV, ±640 mV and ±1.28 V. The peak-to-peak resolution achievable directly from the part is 16 bits at an 800 Hz output rate. The part can switch between channels with 1 ms settling time and maintain a performance level of 13 bits of peak-to-peak resolution.
The serial interface on the part can be configured for three-wire operation and is compatible with microcontrollers and digital signal processors. The AD7731 contains self-calibration and system calibration options and features an offset drift of less than 5 nV/°C and a gain drift of less than 2 ppm/°C.
The part is available in a 24-lead plastic DIP, a 24-lead SOIC and 24-lead TSSOP package.
**Applications**
Process Control
PLCs/DCS
Industrial Instrumentation
### Features and Benefits
24-Bit Sigma-Delta ADC
16 Bits p-p Resolution at 800 Hz Output Rate
Programmable Output Rates up to 6.4 kHz
Programmable Gain Front End
±0.0015% Nonlinearity
Buffered Differential Inputs
Programmable Filter Cutoffs
_FAST_Step™* Mode for Channel Sequencing
Single Supply Operation
* FASTStep is a trademark of Analog Devices, Inc.

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