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ADI AD7949BCPZRL7RoHS

Manufacturer
ADI
MPN
AD7949BCPZRL7
LCSC Part #
C495320
Packaging
LFCSP-20(4x4)
Customer #
Key Attributes
14-bit, 8-channel, 250 kSPS PulSAR ADC
Datasheetpdf iconADI AD7949BCPZRL7
In-Stock: 748
748 In stock, ships now
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QtyUnit PriceTotal Amount
1+$ 10.505$ 10.51
10+$ 9.0008$ 90.01
30+$ 8.084$ 242.52
100+$ 7.3149$ 731.49
Standard Packaging1500/Full Reel
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Data Acquisition/Analog to Digital Converters (ADC)
ManufacturerADI
PackagingLFCSP-20(4x4)
Operating Temperature-40℃~+85℃
Voltage ReferenceBuilt-in
Clock/OscillatorBuilt-in
FeaturesBipolar input;Multiplexers;Built-in temperature sensor
InterfaceSPI
Quiescent Current (Iq)50nA
Resolution(Bits)250kHz;14
S/N Ratio85dB
Voltage - Supply2.3V~5.5V
Number of Channels8
ADC architectureSAR
Integral non - linearity0.5LSB
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging1500
Sales UnitPiece

Introduction

AI Translation

The AD7949 is an 8-channel, 14-bit, charge redistribution, successive approximation register (SAR) ADC operating from a single supply (VDD).

The AD7949 integrates all the components required for a multichannel, low power data acquisition system, including: a true 14-bit SAR ADC with no missing codes; an 8-channel, low crosstalk multiplexer for configuring inputs as single-ended (with or without a reference ground), differential, or bipolar; an internal low drift voltage reference (selectable 2.5 V or 4.096 V) with buffer; a temperature sensor; an optional single-pole filter; and a sequencer for sequential, continuous sampling across multiple channels.

The AD7949 uses a simple SPI interface for writing to the configuration register and receiving conversion results. The SPI interface operates from a separate supply (VIO), which sets the master logic level. Power consumption is proportional to throughput rate.

The AD7949 is available in a 20-lead miniature LFCSP package and is rated for an operating temperature range of −40°C to +85°C.

Features

AI Translation
  • 14-bit resolution, no missing codes
  • 8-channel multiplexer, selectable unipolar single-ended, differential (with reference ground), or pseudo-bipolar inputs
  • Throughput rate: 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 (VREF up to VDD)
  • Multiple reference options: internal selectable 2.5 V or 4.096 V reference, external buffered reference (up to 4.096 V), external reference (up to VDD)
  • Internal temperature sensor (TEMP)
  • Channel sequencer, optional single-pole filter, busy indicator
  • No pipeline delay, SAR architecture
  • Single-supply operation: 2.3 V to 5.5 V, logic interface voltage: 1.8 V to 5.5 V
  • Serial interface compatible with SPI, MICROWIRE, QSPI, and DSP
  • Power consumption: 2.9 mW @ 2.5 V/200 kSPS, 10.8 mW @ 5 V/250 kSPS
  • Standby current: 50 nA
  • 20-lead 4 mm × 4 mm LFCSP package

Applications

AI Translation
  • Multi-channel system monitoring
  • Battery-powered devices
  • Medical instruments: ECG/EKG
  • Mobile communications: GPS
  • Power line monitoring
  • Data acquisition
  • Seismic data acquisition systems
  • Instrumentation
  • Process control