AD7873ARQZ Resistive Touch Controllers by Analog Devices

Status: Production
Series: AD7873
RoHS: Compliant
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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).PRODUCT HIGHLIGHTS Ratiometric conversion mode available, eliminating errors due to on-board switch resistances. On-board temperature sensor: −40°C to +85°C. Battery monitor input. Touch pressure measurement capability. Low power consumption of 1.37 mW maximum with the reference off, or 2.41 mW typical with the reference on, at 125 kSPS and VCC at 3.6 V. Package options include 4 mm × 4 mm LFCSP. Analog input range from 0 V to VREF. Versatile serial I/O ports.

Prices starting from US$3.23


Distributor Starting From Stock
Logo for Newark Electronics Newark Electronics US$4.80
185
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Logo for element14 element14 US$3.62
185
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Logo for Farnell Farnell US$3.45
185
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Logo for Analog Devices Analog Devices US$5.94
150
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Logo for Richardson RFPD Richardson RFPD US$3.23
-
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Features

4-Wire touch screen interface
On-chip temperature sensor: –40°C to +85°C
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- or 12-bit resolution
One auxiliary analog input
Shutdown mode: 1 µA maximum
16-lead QSOP, TSSOP, and LFCSP packages

Alternative Descriptions

Touch Screen Digitizer, 12Bit, Qsop | Newark Electronics
TOUCH SCREEN DIGITIZER, 12BIT, QSOP | element14
2.7V 12-BIT Touch Screen Digi | Analog Devices
CONVERTER - ADC | Richardson RFPD


Frequently Asked Questions

Where can I find additional details, specifications and documents for a AD7873ARQZ?

Additional datasheets, footprints and schematics for AD7873ARQZ are listed on our Part Details page. You can also find images and similar parts to AD7873ARQZ on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for AD7873ARQZ on our Product Comparison page. Access via the 'View Pricing & Stock' button to view AD7873ARQZ price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does AD7873ARQZ fall under?

The AD7873ARQZ is listed under Resistive Touch Controllers.

Can I view similar or alternative parts?

You can view similar parts to AD7873ARQZ when available in the Resistive Touch Controllers range under the specifications section at the bottom of the details page.

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Submit any questions directly to the customer support team of the distributor listing the product. For the AD7873ARQZ you can contact the distributor directly for product support, shipping queries etc.

Is the AD7873ARQZ RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

Which authorised distributors for AD7873ARQZ have stock available?

Authorised distributors including Newark Electronics, element14, Farnell, Analog Devices and Richardson RFPD have stock available or on a lead time for AD7873ARQZ.

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