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AD7689 Datasheet

AD7689 Datasheet

16-Bit, 8-Channel, 250 kSPS PulSAR ADC
Part No.: AD7689
Page: 37 Pages
Size: 1337 KB
Manufacturer: Analog Devices, Inc.
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Views: 1
Update Time: 2023-11-24 10:39:26
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AD7689 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
AD7689ACPZ Tray 490   3 20 -40°C ~ 85°C 20-lead LFCSP (4mm x 4mm x 0.85mm)  
AD7689ACPZRL7 Reel 1500   3 20 -40°C ~ 85°C 20-lead LFCSP (4mm x 4mm x 0.85mm)  
AD7689BCBZ-RL7 Reel 1500   3 20 -40°C ~ 85°C 20-Ball WLCSP (2.39mm x 2.39mm)  
AD7689BCPZ Tray 490   3 20 -40°C ~ 85°C 20-lead LFCSP (4mm x 4mm x 0.85mm)  
AD7689BCPZRL7 Reel 1500   3 20 -40°C ~ 85°C 20-lead LFCSP (4mm x 4mm x 0.85mm)  
AD7689CCPZ Tray 490   3 20 -40°C ~ 125°C 20-lead LFCSP (4mm x 4mm x 0.85mm)  
AD7689CCPZRL7 Reel 1500   3 20 -40°C ~ 125°C 20-lead LFCSP (4mm x 4mm x 0.85mm)  
AD7689-KGD-PT Reel 1500     20 -40°C ~ 125°C CHIPS OR DIE  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

AD7689 Datasheet(PDF)

AD7689 Datasheet(Picture)

AD7689 Features

  • Available as Known Good Die and fully guaranteed to data sheet specifications.
  • 16-bit resolution with no missing codes
  • 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

AD7689 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

AD7689 Description

The AD7689 are 8-channel, 16-bit, charge redistribution successive approximation register (SAR) analog-to-digital converters (ADCs) that operate from a single power supply, VDD.

The AD7689 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 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.

The AD7689 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.

The AD7689 are housed in a tiny 20-lead lead frame chip scale package (LFCSP) and 20-lead wafer level chip scale package (WLCSP) with operation specified from −40°C to +85°C. The AD7689 includes an extended temperature range model with specifications guaranteed to a maximum temperature (TMAX) of +125°C.

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