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ths4551irgtr

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Texas Instruments Differential OpAmps, QFN-16-EP(3x3). Datasheet-verified pinout, KiCad symbol/footprint/3D.

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THS4551IRGTR

Texas Instruments · Differential OpAmps · QFN-16-EP(3x3)

THS4551IRGTR from Texas Instruments, in a QFN-16-EP(3x3). 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 FB- output Inverting (negative) output feedback tap. Internally routed from the OUT- output through a trimmed ~3.5 Ω internal feedback trace; use in gain networks that require the internal feedback path (RGT package only).
2 IN+ input Noninverting (positive) amplifier input. High-impedance analog input to the fully differential amplifier; input common-mode range extends to the negative supply rail (NRI).
3 IN- input Inverting (negative) amplifier input. High-impedance analog input to the fully differential amplifier; input common-mode range extends to the negative supply rail (NRI).
4 FB+ output Noninverting (positive) output feedback tap. Internally routed from the OUT+ output through a trimmed ~3.5 Ω internal feedback trace; use in gain networks that require the internal feedback path (RGT package only).
5 VS+ power_in Positive power-supply input. Single-supply operation 2.7 V to 5.4 V, or split-supply. Bypass to VS- with 100 nF close to the pin; typical IQ = 1.37 mA at 5 V.
6 VS+ power_in Positive power-supply input (tied internally with other VS+ pins). Single-supply operation 2.7 V to 5.4 V. Tie to pins 5, 7, 8.
7 VS+ power_in Positive power-supply input (tied internally with other VS+ pins). Single-supply operation 2.7 V to 5.4 V. Tie to pins 5, 6, 8.
8 VS+ power_in Positive power-supply input (tied internally with other VS+ pins). Single-supply operation 2.7 V to 5.4 V. Tie to pins 5, 6, 7.
9 VOCM input Output common-mode voltage control input. Sets the DC common-mode level of OUT+ and OUT-. Leave open to default to midsupply, or drive from an ADC VREF/2 output; wide range supports 0.7 V to 3.0 V common-mode requirements.
10 OUT+ output Noninverting (positive) amplifier output. Rail-to-rail output; drives ADC inputs directly. Continuous output current ±60 mA typ at ±2.5 V, RL = 40 Ω.
11 OUT- output Inverting (negative) amplifier output. Rail-to-rail output; drives ADC inputs directly. Continuous output current ±60 mA typ at ±2.5 V, RL = 40 Ω.
12 PD input Power-down control input. PD logic low = shutdown; PD logic high = normal operation. Enable threshold above (VS-)+1.15 V, disable threshold below (VS-)+0.55 V. Do not float - tie to VS+ for always-on.
13 VS- power_in Negative power-supply input (tied internally with other VS- pins). Ground for single-supply operation, or negative rail for split-supply. Tie to pins 14, 15, 16.
14 VS- power_in Negative power-supply input (tied internally with other VS- pins). Ground for single-supply operation, or negative rail for split-supply. Tie to pins 13, 15, 16.
15 VS- power_in Negative power-supply input (tied internally with other VS- pins). Ground for single-supply operation, or negative rail for split-supply. Tie to pins 13, 14, 16.
16 VS- power_in Negative power-supply input (tied internally with other VS- pins). Ground for single-supply operation, or negative rail for split-supply. Tie to pins 13, 14, 15.
17 EP passive Exposed thermal pad (bottom side). Electrically isolated from the die but must be soldered to a heat-spreading power or ground plane; do not float. Improves thermal dissipation (RθJC(bot) = 12 °C/W).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package QFN-16-EP(3x3)
Category Op-amp/Cmp
Pins 17

Ordering variants

  • THS4551IRGTR
  • THS4551IRGTRIRGTT
  • THS4551IRGTRIRUNR
  • THS4551IRGTRIRUNT
  • THS4551IRGTRIDGKR
  • THS4551IRGTRIDGKT

CAD (KiCad official)

  • Symbol: THS4551IRGTR
  • Footprint: Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm
  • 3D model: QFN-16-EP(3x3) (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Texas Instruments datasheet (None pp, sha256 f1d7ab87169a4112, retrieved 2026-08-17, tier: manufacturer)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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

Symbol & Footprint

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Datasheet

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