AD7873
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AD7873

Touch Screen Digitizer

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Info: : PRODUCTION tooltip
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Part Details
Part Models 7
1ku List Price Starting From $2.47
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
Additional Details
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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

  1. Ratiometric conversion mode available, eliminating errors due to on-board switch resistances.
  2. On-board temperature sensor: −40°C to +85°C.
  3. Battery monitor input.
  4. Touch pressure measurement capability.
  5. 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.
  6. Package options include 4 mm × 4 mm LFCSP.
  7. Analog input range from 0 V to VREF.
  8. Versatile serial I/O ports.

APPLICATIONS

  • Personal digital assistants
  • Smart hand-held devices
  • Touch screen monitors
  • Point-of-sale terminals
  • Pagers
Part Models 7
1ku List Price Starting From $2.47

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD7873ACPZ
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AD7873ARQZ
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AD7873ARQZ-REEL
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AD7873ARQZ-REEL7
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AD7873ARUZ
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AD7873ARUZ-REEL
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AD7873ARUZ-REEL7
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Product Lifecycle

PCN

May 22, 2012

- 12_0063

Conversion of Select Sizes of LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to ASE-Korea.

Feb 8, 2010

- 04_0080

Qualification of the 8" C6 and Q Wafer Fab Processes at Analog Devices, Limerick, Ireland.

AD7873ACPZ

AD7873ARQZ

PRODUCTION

AD7873ARQZ-REEL

PRODUCTION

AD7873ARQZ-REEL7

PRODUCTION

AD7873ARUZ

PRODUCTION

AD7873ARUZ-REEL

PRODUCTION

AD7873ARUZ-REEL7

PRODUCTION

Aug 26, 2010

- 10_0001

Halogen Free Material Change for QSOP Products

AD7873ARQZ

PRODUCTION

AD7873ARQZ-REEL

PRODUCTION

AD7873ARQZ-REEL7

PRODUCTION

Feb 11, 2011

- 10_0005

Halogen Free Material Change for TSSOP Products Assembled at Amkor

AD7873ARUZ

PRODUCTION

AD7873ARUZ-REEL

PRODUCTION

AD7873ARUZ-REEL7

PRODUCTION

Dec 5, 2023

- 23_0120

Obsolescence of AD7873ACPZ

Filter by Model

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Reset Filters

Part Models

Product Lifecycle

PCN

May 22, 2012

- 12_0063

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Conversion of Select Sizes of LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to ASE-Korea.

Feb 8, 2010

- 04_0080

arrow down

Qualification of the 8" C6 and Q Wafer Fab Processes at Analog Devices, Limerick, Ireland.

AD7873ACPZ

AD7873ARQZ

PRODUCTION

AD7873ARQZ-REEL

PRODUCTION

AD7873ARQZ-REEL7

PRODUCTION

AD7873ARUZ

PRODUCTION

AD7873ARUZ-REEL

PRODUCTION

AD7873ARUZ-REEL7

PRODUCTION

Aug 26, 2010

- 10_0001

arrow down

Halogen Free Material Change for QSOP Products

AD7873ARQZ

PRODUCTION

AD7873ARQZ-REEL

PRODUCTION

AD7873ARQZ-REEL7

PRODUCTION

Feb 11, 2011

- 10_0005

arrow down

Halogen Free Material Change for TSSOP Products Assembled at Amkor

AD7873ARUZ

PRODUCTION

AD7873ARUZ-REEL

PRODUCTION

AD7873ARUZ-REEL7

PRODUCTION

Dec 5, 2023

- 23_0120

arrow down

Obsolescence of AD7873ACPZ

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