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AD7949BCPZRL7

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14-Bit, 8-Channel, 250 kSPS PulSAR® ADC; Package: LFCSP 4x4mm (2.5EP; No of Pins: 20; Temperature Range: Industrial

  • Package/Case :
  • LFCSP-20
  • Product Categories :
  • Precision A/D Converters ; Multiplexed A/D Converters
  • RoHs Status:
  • Rohs
  • In-stock:
  • 1500

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AD7949BCPZRL7 Product Details

The AD7949BCPZRL7 is an 8-channel, 14-bit, charge redistribution successive approximation register (SAR) analog-to-digital converter (ADC) that operates from a single power supply, VDD.

The AD7949BCPZRL7 contains all components for use in a multichannel, low power data acquisition system, including a true 14-bit SAR ADC with no missing codes; an 8-channel, 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 AD7949BCPZRL7 uses a simple SPI interface 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 AD7949BCPZRL7 is housed in a tiny 20-lead LFCSP with operation specified from −40°C to +85°C.

Feature

  • 14-bit resolution with no missing codes
  • 8-channel multiplexer with choice of inputs
    • Unipolar single-ended
    • Differential (GND sense)
    • Pseudobipolar
  • Throughput: 250 kSPS
  • INL/DNL: ±0.5/±0.25 LSB typical
  • SINAD: 85 dB @ 20 kHz
  • THD: −100 dB @ 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
    • 2.9 mW at 2.5 V/200 kSPS
    • 10.8 mW at 5 V/250 kSPS
  • Standby current: 50 nA
  • 20-lead 4 mm × 4 mm LFCSP package
AD7949-EP supports defense and aerospace applications (AQEC standard)

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  • Military temperature range  (−55°C to +125°C)
  • Controlled manufacturing baseline
  • Enhanced product change notification
  • Qualification data available on request
  • V62/12645 DSCC Drawing Number

Applications

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

AD7949BCPZRL7 Pinout
(Picture: Pinout)

AD7949BCPZRL7 Block Diagram
(Picture: Diagram)

Technical Parameters

  • Number of Channels
  • 8
  • Architecture
  • SAR
  • Conversion Rate
  • 250 kSPs
  • Resolution
  • 14 bit
  • Input Type
  • Single-Ended
  • SNR
  • 85.5 dB
  • Interface Type
  • Serial (4-Wire, SPI, QSPI, Microwire)
  • Operating Supply Voltage
  • 2.3 V to 5.5 V
  • Maximum Operating Temperature
  • + 85 C
  • Mounting Style
  • SMD/SMT
  • Package / Case
  • LFCSP-20
  • Maximum Power Dissipation
  • 13.5 mW
  • Minimum Operating Temperature
  • - 40 C
  • Number of Converters
  • 1
  • Packaging
  • Reel
  • Series
  • AD7949
  • Voltage Reference
  • Internal, External

AD7949BCPZRL7 Documents

  • AD7949 Technical Documentation/Data sheet

AD7949BCPZRL7 Related Products

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1.We provide 90 days warranty.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.

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Analog Devices, Inc

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Analog Devices, Inc. was founded by two MIT graduates, Ray Stata and Matthew Lorber in 1965. The same year, the company released its first product, the model 101 op amp, which was a hockey-puck sized module used in test and measurement equipment. In 1967, the company published the first issue of its...
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