AD7738 Selling Leads, Price trend, AD7738 DataSheet download, circuit diagram from SeekIC.com

Features: High Resolution ADC24 Bits No Missing Codes0.0015% NonlinearityOptimized for Fast Channel Switching18-Bits p-p Resolution (21 Bits Effective) at 500 Hz16-Bits p-p Resolution (19 Bits Effective) at 8.5 kHz15-Bits p-p Resolution (18 Bits Effective) at 15 kHzOn-Chip Per Channel System Calib...

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SeekIC No. : 004270774 Detail

AD7738: Features: High Resolution ADC24 Bits No Missing Codes0.0015% NonlinearityOptimized for Fast Channel Switching18-Bits p-p Resolution (21 Bits Effective) at 500 Hz16-Bits p-p Resolution (19 Bits Effec...

AD7738 Data Sheet

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Part Number:: AD7738
Supply Ability:: 5000

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Product Details

Description

Features:

High Resolution ADC
24 Bits No Missing Codes0.0015% Nonlinearity
Optimized for Fast Channel Switching
18-Bits p-p Resolution (21 Bits Effective) at 500 Hz
16-Bits p-p Resolution (19 Bits Effective) at 8.5 kHz
15-Bits p-p Resolution (18 Bits Effective) at 15 kHz
On-Chip Per Channel System Calibration
Configurable Inputs
8 Single-Ended or 4 Fully Differential
Input Ranges
+625 mV, +1.25 V, +2.5 V, 625 mV, 1.25 V, 2.5 V
3-Wire Serial Interface
SPI(TM), QSPI(TM), MICROWIRE(TM) and DSP Compatible
Schmitt Trigger on Logic Inputs
Single-Supply Operation
5 V Analog Supply
3 V or 5 V Digital Supply
Package: 28-Lead TSSOP
APPLICATIONS
PLCs/DCS
Multiplexing Applications
Process Control
Industrial Instrumentation

Pinout

Connection Diagram

Specifications

AV_DD to AGND, DVDD to DGND . . . . . . . . . . . . . . . . . . . . 0.3 V to +7 V
AGND to DGND . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 0.3 V to +0.3 V
AV_DD to DV_DD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 V to +5 V
AIN, AINCOM to AGND . . . . . . . . .. . . . . . . . . . . . .0.3 V to AV_DD + 0.3 V
REFIN(+), REFIN() to AGND . . . . .. . . . . . . . . . . 0.3 V to AV_DD + 0.3 V
MUXOUT(+) to AGND . . . . . . . . . .. . . . . . . . . . . . .0.3 V to AV_DD + 0.3 V
MUXOUT() to AGND . . . . . . . . . . . . . . . . . . . .. . .0.3 V to AV_DD + 0.3 V
ADCIN(+), ADCIN() to AGND . . . . . . . . . . . . . . ..0.3 V to AV_DD + 0.3 V
P1 Voltage to AGND . . . . . . . . . . . . .. . . . . . . . . . .0.3 V to AV_DD + 0.3 V
Digital Input Voltage to DGND . . .. . . . . . . . . . . . . 0.3 V to AV_DD + 0.3 V
Digital Output Voltage to DGND . . . . . . . . . . . . . . .0.3 V to AV_DD + 0.3 V
Operating Temperature Range . . . . . . . . .. . .. .. . . . 40°C to +105°C
Storage Temperature Range . . . . . . . . . . . .. . . . . . . . 65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . .. .. .. .. .. ... 150°C
TSSOP Package, Power Dissipation . . . . . . . . . . . . . . .. . .. ... . . 660 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . 97.9°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . .. . . . . . .. .. .. 215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . .. .. ... 220°C

Resolution (Bits)	24bit
T-Put Rate	15.4kSPS
# Chan	8
Supply V	Single(+5)
Pwr Diss	100mW

Interface	Ser,SPI
Ain Range	Bip 0.625,Bip 1.25,Bip 2.5V,Uni 0.625,Uni 1.25,Uni 2.5V
SNR (dB)	n/a
Pkg Type	SOP

Description

The AD7738 is a high precision, high throughput analog frontend. True 16-bit p-p resolution is achievable with a total con-version time of 117 s (8.5 kHz channel switching), making it ideally suitable for high resolution multiplexing applications.The part can be configured via a simple digital interface, which allows users to balance the noise performance against data throughput up to a 15.4 kHz.

The AD7738 analog front end features eight single-ended or four fully differential input channels with unipolar or bipolar 625 mV,1.25 V, and 2.5 V input ranges and accepts a common-mode input voltage from 200 mV above AGND to AVDD 300 mV.The multiplexer output is pinned out externally, allowing the user to implement programmable gain or signal conditioning before applying the input to the ADC.The differential reference input features "No-Reference" detect capability. The ADC also supports per channel system calibra-tion options.

The digital serial interface of AD7738 can be configured for 3-wire opera-tion and is compatible with microcontrollers and digital signal processors. All interface inputs are Schmitt triggered.

The AD7738 part is specified for operation over the extended industrial temperature range of 40C to +105C.Other parts in the AD7738 family are the AD7734 and the AD7732.

The AD7734 analog front end features four single-ended input channels with unipolar or true bipolar input ranges to ±10 V while operating from a single 5 V analog supply. The AD7734 accepts an analog input overvoltage to ±16.5 V while not degrading the performance of the adjacent channels. The AD7732 is similar to AD7734, but its analog front end features two fully differential input channels.

AD7738

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