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PGA870IRHDR

Public Made by Adom

by adom

Texas Instruments Differential Amplifiers, VQFN-28-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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PGA870IRHDR

Texas Instruments · Differential Amplifiers · VQFN-28-EP(5x5)

PGA870IRHDR from Texas Instruments, in a VQFN-28-EP(5x5). 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 LATCH MODE input Controls latched and unlatched acquisition of the gain control word (B0 to B5); digital thresholds are 0.9 V low and 2.1 V high.
2 VS+ power_in +5 V power supply; specified operating voltage 4.75 V to 5.25 V.
3 IN+ input Noninverting input; differential input resistance 150 Ω typical.
4 VMID2 passive Buffer output for the internal midsupply reference, not intended to drive an external load, and should be bypassed by a 0.1-μF capacitor.
5 IN- input Inverting input; differential input resistance 150 Ω typical.
6 VS+ power_in +5 V power supply; specified operating voltage 4.75 V to 5.25 V.
7 GAIN STROBE input Gain latch clock pin; data set-up time to GAIN STROBE low is 2.5 ns typical and hold time is 0 ns.
8 B5 (MSB) input Gain control MSB of the 6-bit gain word.
9 B4 input Gain control bit 4.
10 B3 input Gain control bit 3.
11 VS+ power_in +5 V power supply; specified operating voltage 4.75 V to 5.25 V.
12 B2 input Gain control bit 2.
13 B1 input Gain control bit 1.
14 B0 (LSB) input Gain control bit 0 (LSB).
15 GND power_in Ground.
16 VS+ power_in +5 V power supply; specified operating voltage 4.75 V to 5.25 V.
17 OUT- output Inverting output.
18 GND power_in Ground.
19 OUT+ output Noninverting output.
20 VS+ power_in +5 V power supply; specified operating voltage 4.75 V to 5.25 V.
21 GND power_in Ground.
22 GND power_in Ground.
23 GND power_in Ground.
24 GND power_in Ground.
25 VS+ power_in +5 V power supply; specified operating voltage 4.75 V to 5.25 V.
26 GND power_in Ground.
27 PD input Active-low power-down for the analog circuitry (on above 2.1 V, off below 0.9 V); gain control CMOS circuitry stays active when PD is low.
28 VMID1 passive Chip bypass pin for the internal midsupply reference, not intended as an input, and should be bypassed with a 0.1-μF capacitor.
29 PowerPAD power_in Thermal contact for heat dissipation; the thermal pad must be connected to electrical ground.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package VQFN-28-EP(5x5)
Category Amplifiers/Comparators
Pins 29

CAD (KiCad official)

  • Symbol: PGA870IRHDR
  • Footprint: Package_DFN_QFN:QFN-28-1EP_5x5mm_P0.5mm_EP3.35x3.35mm
  • 3D model: VQFN-28-EP(5x5) (KiCad packages3D, STEP)
  • 3D model files: pga870irhdr-etched.step / pga870irhdr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pga870irhdr.step / pga870irhdr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (39 pp, sha256 12ba1f4c47abcbd2, retrieved 2026-10-07, 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