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AD7689BCBZ-RL7 DataSheet

AD7689BCBZ-RL7 DataSheet

Part No.
AD7689BCBZ-RL7
Package Option
CB-20-12
Temperature
−40°C to +85°C
Package
20-Ball WLCSP
File Size
642 KB
Page
38 Pages
Manufacturer
Analog Devices, Inc.
Views
2
Upload Time
2022-05-24 15:03:27
Update Time
2022-05-24
Description
IC ADC 16BIT SAR 20WLCSP
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AD7689BCBZ-RL7 Features

16-bit resolution with no missing codes
4-channel (AD7682)/8-channel (AD7689) multiplexer with choice of inputs
Unipolar single-ended
Differential (GND sense)
Pseudobipolar
Throughput: 250 kSPS
INL: ±0.4 LSB typical, ±1.5 LSB maximum (±23 ppm or FSR) Dynamic range: 93.8 dB
SINAD: 92.5 dB at 20 kHz
THD: −100 dB at 20 kHz
Analog input range: 0 V to VREF with VREF up to VDD
Multiple reference types
  Internal selectable 2.5 V or 4.096 V
  External buffered (up to 4.096 V) 
  External (up to VDD)
Internal temperature sensor (TEMP)
Channel sequencer, selectable 1-pole filter, busy indicator No pipeline delay, SAR architecture
Single-supply 2.3 V to 5.5 V operation with 1.8 V to 5.5 V logic interface
Serial interface compatible with SPI, MICROWIRE, QSPI,and DSP
Power dissipation
  3.5 mW at 2.5 V/200 kSPS
  12.5 mW at 5 V/250 kSPS
Standby current: 50 nA
Low cost grade available
20-lead 4 mm × 4 mm LFCSP package 
20-lead 2.4 mm × 2.4 mm WLCSP package

AD7689BCBZ-RL7 Applications

Multichannel system monitoring
Battery-powered equipment
Medical instruments: ECG/EKG
Mobile communications: GPS
Power line monitoring
Data acquisition
Seismic data acquisition systems
Instrumentation
Process control

AD7689BCBZ-RL7 Description

AD7689BCBZ-RL7 are 4-channel/8-channel, 16-bit, charge redistribution successive approximation register (SAR) analog-to-digital converters (ADCs) that operate from a single power supply, VDD.

AD7689BCBZ-RL7 contain all components for use in a multichannel, low power data acquisition system, including a true 16-bit SAR ADC with no missing codes; a 4-channel (AD7682) or 8-channel (AD7689) low crosstalk multiplexer that is useful for configuring the inputs as single-ended (with or without ground sense), differential, or bipolar; an internal low drift reference (selectable 2.5 V or 4.096 V) and buffer; a temperature sensor; a selectable one-pole filter; and a sequencer that is useful when channels are continuously scanned in order.

AD7689BCBZ-RL7 use a simple serial port interface (SPI) for writing to the configuration register and receiving conversion results. The SPI interface uses a separate supply, VIO, which is set to the host logic level. Power dissipation scales with throughput.

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