AD7879-1WARUZ-RL7 Capacitive-to-Digital and Touch Screen Controllers by Analog Devices

Status: Production
Series: AD7879
RoHS: Compliant
View Datasheet Manufacturer Site View Pricing & Stock

The AD7879/AD7889 are 12-bit successive approximationanalog-to-digital converters (SAR ADCs) with a synchronousserial interface and low on-resistance switches for driving 4-wireresistive touch screens. The AD7879/AD7889 work with a verylow power supply—a single 1.6 V to 3.6 V supply—and feature athroughput rate of 105 kSPS. The devices include a shutdownmode that reduces current consumption to less than 6 μA.To reduce the effects of noise from LCDs and other sources, theAD7879/AD7889 contain a preprocessing block. Thepreprocessing function consists of a median filter and anaveraging filter. The combination of these two filters provides amore robust solution, discarding the spurious noise in the signaland keeping only the data of interest. The size of both filters isprogrammable. Other user-programmable conversion controlsinclude variable acquisition time and first conversion delay; upto 16 averages can be taken per conversion. The AD7879/AD7889can run in slave mode or standalone (master) mode, using anautomatic conversion sequencer and timer.The AD7879/AD7889 have a programmable pin that canoperate as an auxiliary input to the ADCs, as a battery monitor,or as a general-purpose input/output (GPIO). In addition, aprogrammable interrupt output can operate in three modes: as ageneral-purpose interrupt to signal when new data is available(DAV), as an interrupt to indicate when limits are exceeded(INT), or as a pen-down interrupt when the screen is touched(PENIRQ). The AD7879/AD7889 offer temperaturemeasurement and touch pressure measurement.The AD7879 is available in a 12-ball, 1.6 mm × 2 mm WLCSPand in a 16-lead, 4 mm × 4 mm LFCSP. The AD7889 is availablein a backside coated version of the WLCSP. Both devices supportan SPI interface (AD7879/AD7889) or an I2C interface (AD7879-1/AD7889-1).

Prices starting from US$2.82


Distributor Starting From Stock
Logo for Analog Devices Analog Devices US$3.04
1,208
Buy Now
Logo for Richardson RFPD Richardson RFPD US$2.82
-
Buy Now
View Full Pricing & Stock Comparison

Features

4-wire touch screen interface
1.6 V to 3.6 V operation
Median and averaging filter to reduce noise
Automatic conversion sequencer and timer
User-programmable conversion parameters
Auxiliary analog input/battery monitor (0.5 V to 5 V)
1 optional GPIO
Interrupt outputs (INT, PENIRQ)
Touch-pressure measurement
Wake-up on touch function
Shutdown mode: 6 μA maximum
12-ball, 1.6 mm × 2 mm WLCSP
16-lead, 4 mm × 4 mm LFCSP

Alternative Descriptions

Touch Screen Controller | Analog Devices
CONVERTER - ADC | Richardson RFPD


Frequently Asked Questions

Where can I find additional details, specifications and documents for a AD7879-1WARUZ-RL7?

Additional datasheets, footprints and schematics for AD7879-1WARUZ-RL7 are listed on our Part Details page. You can also find images and similar parts to AD7879-1WARUZ-RL7 on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for AD7879-1WARUZ-RL7 on our Product Comparison page. Access via the 'View Pricing & Stock' button to view AD7879-1WARUZ-RL7 price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does AD7879-1WARUZ-RL7 fall under?

The AD7879-1WARUZ-RL7 is listed under Capacitive-to-Digital and Touch Screen Controllers.

Can I view similar or alternative parts?

You can view similar parts to AD7879-1WARUZ-RL7 when available in the Capacitive-to-Digital and Touch Screen Controllers range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the AD7879-1WARUZ-RL7 you can contact the distributor directly for product support, shipping queries etc.

Is the AD7879-1WARUZ-RL7 RoHS compliant?

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

Which authorised distributors for AD7879-1WARUZ-RL7 have stock available?

Authorised distributors including Analog Devices and Richardson RFPD have stock available or on a lead time for AD7879-1WARUZ-RL7.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for AD7879-1WARUZ-RL7 often in real-time on the comparison pages.

What if I can't find stock of AD7879-1WARUZ-RL7?

You can fill out our help required form which you can use to request a quote for AD7879-1WARUZ-RL7 from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.

We use cookies to improve your experience. See our privacy policy.
Okay