AD7873ARQZ

Semiconductors - ICs

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> Analog-to-Digital Converters - ADC

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Series Information for AD7873ARQZ - Analog Devices

Features

  • feature
    4-wire touch screen interface On-chip temperature sensor: u221240u00b0C to +85u00b0C On-chip 2.5 V reference Direct battery measurement (0 V to 6 V) Touch pressure measurement Specified throughput rate of 125 kSPS Single supply, VCC of 2.2 V to 5.25 V Ratiometric conversion High speed serial interface Programmable 8-bit or 12-bit resolution One auxiliary analog input Shutdown mode: 1 u00b5A maximum 16-lead QSOP, TSSOP, and LFCSP packages

Description

ADC 12BIT 125KSPS QSOP-16
The AD7873 is a 12-bit successive approximation ADC with a synchronous serial interface and low on resistance switches for driving touch screens. The AD7873 operates from a single 2.2 V to 5.25 V supply, with a throughput rate of 125 kSPS. The AD7873 features direct battery measurement, temperature measurement, and touch pressure measurement. The AD7873 also has an on-board reference of 2.5 V that can be used for the auxiliary input, battery monitor, and temperature measurement modes. When not in use, the internal reference can be shut down to conserve power. An external reference can also be applied and varied from 1 V to VCC with an analog input range from 0 V to VREF. The device includes a shutdown mode that reduces the current consumption to less than 1 µA. The AD7873 features on-board switches. This, coupled with low power and high speed operation, makes the device ideal for battery-powered systems with resistive touch screens. The part is available in a 16-lead, 0.15 inch quarter size outline package (QSOP), a 16-lead, thin shrink small outline package (TSSOP), and a 16-lead, lead frame chip scale package (LFCSP).

Specifications

Resolution (Bits):
12bit
Sampling Rate:
125kSPS
Input Channel Type:
Single Ended
Data Interface:
Serial
Supply Voltage Type:
Single
Supply Voltage Min:
2.7V
Supply Voltage Max:
3.6V
ADC / DAC Case Style:
QSOP
No. of Pins:
16Pins
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Product Range:
12-Bit SAR ADCs
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (07-Jul-2017)

Alternate Descriptions

Richardson RFPD

CONVERTER - ADC