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AD7869

Features: Complete 14-Bit l/O System, Comprising14-Bit ADC with Track/Hold Amplifier83 kHz Throughput Rate14-Bit DAC with Output Amplifier3.5 ms Settling TimeOn-Chip Voltage ReferenceOperates from 65 V SuppliesLow Power-130 mW typSmall 0.3 Wide DIPApplicationDigital Signal ProcessingSpeech Recogn...

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SeekIC No. : 004271128 Detail

AD7869: Features: Complete 14-Bit l/O System, Comprising14-Bit ADC with Track/Hold Amplifier83 kHz Throughput Rate14-Bit DAC with Output Amplifier3.5 ms Settling TimeOn-Chip Voltage ReferenceOperates from 6...

AD7869 Data Sheet

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Part Number:
AD7869
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

Complete 14-Bit l/O System, Comprising
14-Bit ADC with Track/Hold Amplifier
83 kHz Throughput Rate
14-Bit DAC with Output Amplifier
3.5 ms Settling Time
On-Chip Voltage Reference
Operates from 65 V Supplies
Low Power-130 mW typ
Small 0.3" Wide DIP


Application

Digital Signal Processing
Speech Recognition and Synthesis
Spectrum Analysis
High Speed Modems
DSP Servo Control


Pinout

Connection Diagram


Specifications

(TA = + 25°C unless otherwise noted)
VDD to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.3 V to +7 V
VSS to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . .+0.3 V to 7 V
AGND to DGND . . . . . . . . . . . . . . . . .. . . . 0.3 V to VDD + 0.3 V
VOUT to AGND . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . VSS to VDD
VIN to AGND . . . . . . . . . . . . . .. . .  . . VSS 0.3 V to VDD + 0.3 V
RO ADC to AGND . . . . . . . . . . . . . .. . . . . 0.3 V to VDD + 0.3 V
RO DAC to AGND . . . . . . . . . . . . . .. . . . . 0.3 V to VDD + 0.3 V
RI DAC to AGND . . . . . . . . . . . . . . .. . . .  0.3 V to VDD + 0.3 V
Digital Inputs to DGND . . . . . . . . . . . .. . 0.3 V to VDD + 0.3 V
Digital Outputs to DGND . . . . . . . . . . . . 0.3 V to VDD + 0.3 V
Operating Temperature Range
J Version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to +70°C
A Version . . . . . . . . . . . . . . . . . . . . . . . . . . 40°C to +85°C
Storage Temperature Range . . . . . . . . . . 65°C to +150°C
Lead Temperature (Soldering, 10 secs) . . . . . . . . .  . +300°C
Power Dissipation (Any Package) to +75°C . . . . . . 1000 mW
Derates above +75°C by . . . . . . . . . . . . . . . . .  . 10 mW/°C


Description

The AD7869 is a complete 14-bit I/O system containing a DAC and an ADC. The ADC is a successive approximation type with a track-and-hold amplifier, having a combined throughput rate of 83 kHz. The DAC has an output buffer amplifier with a settling time of 4 ms to 14 bits. Temperature compensated 3 V buried Zener references provide precision references for the DAC and ADC.

Interfacing to both the DAC and ADC is serial, minimizing pin count and giving a small 24-pin package size. Standard control signals allow serial interfacing to most DSP machines.

Asynchronous ADC conversion control and DAC updating is made possible with the CONVST and LDAC logic inputs.

The AD7869 operates from ±5 V power supplies; the analog input/ output range of the ADC/DAC is ±3 V. The part is fully specified for dynamic parameters such as signal-to-noise ratio and harmonic distortion as well as traditional dc specifications.

The part is available in a 24-pin, 0.3 inch wide, plastic or hermetic dual-in-line package (DIP) and in a 28-pin, plastic SOIC package.




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