AD7703ARZ

Semiconductors - ICs

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> Analog-to-Digital Converters - ADC

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Series Information for AD7703ARZ - Analog Devices

Features

  • feature
    Monolithic 16-Bit ADC 0.0015% Linearity Error On-Chip Self-Calibration Circuitry Programmable Low-Pass Filter 0.1 Hz to 10 Hz Corner Frequency 0 V to +2.5 V or u2d1e2.5 V Analog Input Range 4 kSPS Output Data Rate Flexible Serial Interface Ultralow Power

Description

ADC 20BIT 4KSPS WSOIC-20

The AD7703 is a 20-bit ADC that uses a S-D conversion tech- nique. The analog input is continuously sampled by an analog modulator whose mean output duty cycle is proportional to the input signal. The modulator output is processed by an on-chip digital filter with a six-pole Gaussian response, which updates the output data register with 16-bit binary words at word rates up to 4 kHz. The sampling rate, filter corner frequency, and output word rate are set by a master clock input that may be supplied externally, or by a crystal controlled on-chip clock oscillator. The inherent linearity of the ADC is excellent and endpoint accu- racy is ensured by self-calibration of zero and full scale, which may be initiated at any time. The self-calibration scheme can also be extended to null system offset and gain errors in the input channel. The output data is accessed through a flexible serial port, which has an asynchronous mode compatible with UARTs and two synchronous modes suitable for interfacing to shift registers or the serial ports of industry-standard microcontrollers. CMOS construction ensures low power dissipation, and a power- down mode reduces the idle power consumption to only 10 µW.

Specifications

Resolution (Bits):
20bit
Sampling Rate:
4kSPS
Input Channel Type:
Single Ended
Data Interface:
Serial
Supply Voltage Type:
Dual (+/-)
Supply Voltage Min:
4.5V
Supply Voltage Max:
5.5V
ADC / DAC Case Style:
WSOIC
No. of Pins:
20Pins
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Product Range:
Single 20-Bit Sigma-Delta ADCs
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 3 - 168 hours
SVHC:
No SVHC (07-Jul-2017)

Alternate Descriptions

Newark Electronics
ADC, 20BIT, 4KSPS, WSOIC-20; Resolution (Bits):20bit; Sampling Rate:4kSPS; Input Channel Type:Single Ended; Data Interface:Serial; Supply Voltage Type:Dual (+/-); Supply Voltage Min:4.5V; Supply Voltage Max:5.5V; No. of Pins:20Pins RoHS Compliant: Yes
Richardson RFPD
CONVERTER - ADC