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ONET1130ECRSMT

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Texas Instruments Special Purpose Amplifiers, VQFN-32-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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ONET1130ECRSMT

Texas Instruments · Special Purpose Amplifiers · VQFN-32-EP(4x4)

ONET1130ECRSMT from Texas Instruments, in a VQFN-32-EP(4x4). 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 LOL output Transmitter and receiver loss of lock indicator; open drain output (3.3 V tolerant) that requires an external 4.7-10 kΩ pull-up resistor to VCC.
2 MONB output Bias current monitor output.
3 GND power_in Circuit ground.
4 TXIN+ input Non-inverted transmitter data input with on-chip 100 Ω differential termination to TXIN-; must be AC coupled.
5 TXIN- input Inverted transmitter data input with on-chip 100 Ω differential termination to TXIN+; must be AC coupled.
6 GND power_in Circuit ground.
7 PD bidirectional Photodiode input capable of sourcing or sinking current based on register setting.
8 MONP output Photodiode current monitor output.
9 TX_LF input Transmitter loop filter capacitor connection.
10 BIAS bidirectional Laser bias current pin that sinks or sources bias current for both APC and open-loop modes.
11 VCC_TX power_in 2.5 V ± 5% supply voltage for the transmitter.
12 TXOUT- output Inverted transmitter data output internally terminated in single-ended operation mode.
13 TXOUT+ output Non-inverted transmitter data output.
14 VCC_TX power_in 2.5 V ± 5% supply voltage for the transmitter.
15 VDD power_in 2.5 V ± 5% supply voltage for the digital circuitry.
16 AMP input Output amplitude control input (0-2 V range) to adjust transmitter output amplitude; leave open when not used.
17 SDA bidirectional 2-wire serial data input/output (3.3 V tolerant) requiring an external 4.7-10 kΩ pull-up resistor to VCC.
18 SCK input 2-wire serial clock input (3.3 V tolerant) requiring an external 4.7-10 kΩ pull-up resistor to VCC.
19 GND power_in Circuit ground.
20 RXIN+ input Non-inverted receiver data input with on-chip 100 Ω differential termination to RXIN-; must be AC coupled.
21 RXIN- input Inverted receiver data input with on-chip 100 Ω differential termination to RXIN+; must be AC coupled.
22 GND power_in Circuit ground.
23 COMP input APC loop compensation pin; connect a 0.01 µF capacitor to ground for bandwidth control.
24 RX_LOS output Receiver loss of signal indicator; open drain output (3.3 V tolerant) that requires an external 4.7-10 kΩ pull-up resistor to VCC.
25 RX_LF input Receiver loop filter capacitor connection.
26 RX_DIS input Receiver output buffer disable input (3.3 V tolerant) with integrated 250 kΩ pull-up to VCC; ground to enable, high to disable.
27 VCC_RX power_in 2.5 V ± 5% supply voltage for the receiver.
28 RXOUT- output Inverted receiver data output with 45 Ω back termination to VCC.
29 RXOUT+ output Non-inverted receiver data output with 45 Ω back termination to VCC.
30 VCC_RX power_in 2.5 V ± 5% supply voltage for the receiver.
31 TX_FLT output Transmitter fault detection flag; open drain output (3.3 V tolerant) that requires an external 4.7-10 kΩ pull-up resistor to VCC.
32 TX_DIS input Transmitter bias and modulation disable input (3.3 V tolerant) with integrated 250 kΩ pull-up to VCC; high disables both bias and modulation currents, can toggle to reset fault.
33 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package VQFN-32-EP(4x4)
Category Amplifiers/Comparators
Pins 33

CAD (KiCad official)

  • Symbol: ONET1130ECRSMT
  • Footprint: Package_DFN_QFN:QFN-32-1EP_4x4mm_P0.4mm_EP2.9x2.9mm
  • 3D model: VQFN-32-EP(4x4) (KiCad packages3D, STEP)
  • 3D model files: onet1130ecrsmt-etched.step / onet1130ecrsmt-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); onet1130ecrsmt.step / onet1130ecrsmt.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (64 pp, sha256 ec8ce9f01f56cdb7, retrieved 2026-10-03, tier: lcsc)
  • 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: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (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