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ADS7843E

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by Ray

Texas Instruments Touch Screen Controllers, SSOP-16-150mil. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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ADS7843E

Texas Instruments · Touch Screen Controllers · SSOP-16-150mil

ADS7843E from Texas Instruments, in a SSOP-16-150mil. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 +VCC power_in Power Supply, 2.7V to 5V. Tied together with pin 10 (+VCC).
2 X+ input X+ Position Input. ADC input Channel 1. Connects to the X+ electrode of the resistive touch panel; also drivable by internal switch (~5Ω on-resistance) to +VCC.
3 Y+ input Y+ Position Input. ADC input Channel 2. Connects to the Y+ electrode of the resistive touch panel; also drivable by internal switch (~5Ω on-resistance) to +VCC.
4 X- input X- Position Input. Connects to the X- electrode of the resistive touch panel; also drivable by internal switch (~6Ω on-resistance) to GND.
5 Y- input Y- Position Input. Connects to the Y- electrode of the resistive touch panel; also drivable by internal switch (~6Ω on-resistance) to GND.
6 GND power_in Ground reference for both analog and digital sections.
7 IN3 input Auxiliary Input 1. ADC input Channel 3. General-purpose single-ended analog input, 0V to VREF range.
8 IN4 input Auxiliary Input 2. ADC input Channel 4. General-purpose single-ended analog input, 0V to VREF range.
9 VREF input Voltage Reference Input. Sets the ADC full-scale range; may be varied between 1V and +VCC (typical 2.5V).
10 +VCC power_in Power Supply, 2.7V to 5V. Tied together with pin 1 (+VCC).
11 PENIRQ output Pen Interrupt. Open-anode (open-drain) output that asserts low when the pen touches the panel; requires a 10kΩ to 100kΩ external pull-up resistor.
12 DOUT tri_state Serial Data Output (MISO). Data is shifted out on the falling edge of DCLK. Output is high-impedance when CS is HIGH.
13 BUSY tri_state Busy Output. Indicates a conversion is in progress. Output is high-impedance when CS is HIGH.
14 DIN input Serial Data Input (MOSI). If CS is LOW, data is latched on the rising edge of DCLK.
15 CS input Chip Select Input (active low). Controls conversion timing and enables the serial input/output register.
16 DCLK input External Clock Input (SCLK). This clock runs the SAR conversion process and synchronizes serial data I/O.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SSOP-16-150mil
Category Data Acquisition
Pins 16

Ordering variants

Same part, different packaging or reel option.

  • ADS7843E
  • ADS7843E/2K5

CAD (KiCad official)

  • Symbol: ADS7843E
  • Footprint: Package_SO:SSOP-16_5.3x6.2mm_P0.65mm
  • 3D model: SSOP-16-150mil (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (20 pp, sha256 ea67b3946b732aa0, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF