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ADS7864YB

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Texas Instruments Analog To Digital Converters (ADC), TQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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ADS7864YB

Texas Instruments · Analog To Digital Converters (ADC) · TQFP-48(7x7)

ADS7864YB from Texas Instruments, in a TQFP-48(7x7). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 +VA power_in Analog power supply, normally +5V (supply range 4.75 V to 5.25 V).
2 AGND power_in Analog ground; should be connected to a clean analog ground point.
3 DB15 output Data valid output: '1' indicates valid data and '0' indicates invalid data.
4 DB14 output Channel address output pin (see Table 2).
5 DB13 output Channel address output pin (see Table 2).
6 DB12 output Channel address output pin (see Table 2).
7 DB11 output Data bit 11, the MSB of the conversion result.
8 DB10 output Data bit 10 of the conversion result.
9 DB9 output Data bit 9 of the conversion result.
10 DB8 output Data bit 8 of the conversion result.
11 DB7 output Data bit 7 of the conversion result.
12 DB6 output Data bit 6 of the conversion result.
13 DB5 output Data bit 5 of the conversion result.
14 DB4 output Data bit 4 of the conversion result.
15 DB3 output Data bit 3 of the conversion result.
16 DB2 output Data bit 2 of the conversion result.
17 DB1 output Data bit 1 of the conversion result.
18 DB0 output Data bit 0, the LSB of the conversion result.
19 BUSY output Goes low when a conversion is in progress.
20 DGND power_in Digital ground.
21 +VD power_in Digital power supply, +5 VDC (supply range 4.75 V to 5.25 V).
22 CLOCK input An external clock must be applied to this input; the external clock range is 0.2 MHz to 8 MHz.
23 RD input Enables the parallel output when used in conjunction with chip select.
24 CS input Chip select input.
25 HOLDC input Places channels C0 and C1 in hold mode.
26 HOLDB input Places channels B0 and B1 in hold mode.
27 HOLDA input Places channels A0 and A1 in hold mode.
28 BYTE input 2 × 8 output capability; active high.
29 A2 input Address/mode select pin (see Table 3).
30 A1 input Address/mode select pin (see Table 3).
31 A0 input Address/mode select pin (see Table 3).
32 RESET input Reset pin.
33 REFOUT output Internal reference output; when using the internal reference, a bypass capacitor must not be used and this pin is tied directly to pin 34.
34 REFIN input Reference input; external reference voltage range is 1.2 V to 2.6 V (2.5 V nominal internal reference).
35 AGND power_in Analog ground; should be connected to a clean analog ground point.
36 +VA power_in Analog power supply, normally +5V (supply range 4.75 V to 5.25 V).
37 CH A1+ input Noninverting input, channel A1; analog inputs are limited to -0.3 V to (+VA + 0.3) V.
38 CH A1- input Inverting input, channel A1; analog inputs are limited to -0.3 V to (+VA + 0.3) V.
39 CH B1+ input Noninverting input, channel B1; analog inputs are limited to -0.3 V to (+VA + 0.3) V.
40 CH B1- input Inverting input, channel B1; analog inputs are limited to -0.3 V to (+VA + 0.3) V.
41 CH C1+ input Noninverting input, channel C1; analog inputs are limited to -0.3 V to (+VA + 0.3) V.
42 CH C1- input Inverting input, channel C1; analog inputs are limited to -0.3 V to (+VA + 0.3) V.
43 CH C0- input Inverting input, channel C0; analog inputs are limited to -0.3 V to (+VA + 0.3) V.
44 CH C0+ input Noninverting input, channel C0; analog inputs are limited to -0.3 V to (+VA + 0.3) V.
45 CH B0- input Inverting input, channel B0; analog inputs are limited to -0.3 V to (+VA + 0.3) V.
46 CH B0+ input Noninverting input, channel B0; analog inputs are limited to -0.3 V to (+VA + 0.3) V.
47 CH A0- input Inverting input, channel A0; analog inputs are limited to -0.3 V to (+VA + 0.3) V.
48 CH A0+ input Noninverting input, channel A0; analog inputs are limited to -0.3 V to (+VA + 0.3) V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TQFP-48(7x7)
Category Data Acquisition
Pins 48

CAD (KiCad official)

  • Symbol: ADS7864YB
  • Footprint: Package_QFP:TQFP-48_7x7mm_P0.5mm
  • 3D model: TQFP-48(7x7) (KiCad packages3D, STEP)
  • 3D model files: ads7864yb-etched.step / ads7864yb-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ads7864yb.step / ads7864yb.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (28 pp, sha256 b0cb9242130340c6, retrieved 2026-10-08, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF