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DAC902U

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Texas Instruments Digital To Analog Converters (DACs), SOIC-28-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentdata convertersdac902ufactory-2.0.0extractor-text

Verified DAC902U

by Ray · last 31 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

31 Oct 2026RayPublished by the parts factory: tier mfr, 28 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: DAC902U · SOIC-28-300mil · 28 pins
  • ✓copper: 28 copper pads, none touching another net
  • ✓datasheet: all 28 pin names found in the 26-page datasheet
  • ✓distributor: lcsc C1555011, digikey 2156-DAC902U-ND, mouser 595-DAC902U
  • ✓family: SOIC-28W_7.5x17.9mm_P1.27mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-06afg0y1/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): the datasheet dimensions give no height or body size to compare
  • ✓pads: 28 pins = 28 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 28 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ dac902u.kicad_sym✓ dac902u.kicad_mod✓ dac902u.step
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DAC902U

Texas Instruments · Digital To Analog Converters (DACs) · SOIC-28-300mil

DAC902U from Texas Instruments, in a SOIC-28-300mil. 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 Bit 1 (D11) input Data bit 1 (D11), the MSB of the 12-bit data input.
2 Bit 2 (D10) input Data bit 2 (D10) of the 12-bit data input.
3 Bit 3 (D9) input Data bit 3 (D9) of the 12-bit data input.
4 Bit 4 (D8) input Data bit 4 (D8) of the 12-bit data input.
5 Bit 5 (D7) input Data bit 5 (D7) of the 12-bit data input.
6 Bit 6 (D6) input Data bit 6 (D6) of the 12-bit data input.
7 Bit 7 (D5) input Data bit 7 (D5) of the 12-bit data input.
8 Bit 8 (D4) input Data bit 8 (D4) of the 12-bit data input.
9 Bit 9 (D3) input Data bit 9 (D3) of the 12-bit data input.
10 Bit 10 (D2) input Data bit 10 (D2) of the 12-bit data input.
11 Bit 11 (D1) input Data bit 11 (D1) of the 12-bit data input.
12 Bit 12 (D0) input Data bit 12 (D0), the LSB of the 12-bit data input.
13 NC unconnected No connection.
14 NC unconnected No connection.
15 PD input Power-down control input, active HIGH, with an internal pull-down circuit; may be left unconnected if not used.
16 INT/EXT input Reference select pin: internal (=0) or external (=1) reference operation.
17 REFIN bidirectional Reference input/output; see the Applications section of the datasheet for details.
18 FSA input Full-scale output adjust; one external resistor sets the full-scale current over 2mA to 20mA.
19 BW passive Bandwidth/noise reduction pin; bypass with 0.1µF to +VA for optimum performance.
20 AGND power_in Analog ground.
21 ~{IOUT} output Complementary DAC current output (the datasheet's overbarred IOUT).
22 IOUT output DAC current output.
23 BYP passive Bypass node; use 0.1µF to AGND.
24 +VA power_in Analog supply voltage, 2.7V to 5.5V.
25 NC unconnected No connection.
26 DGND power_in Digital ground.
27 +VD power_in Digital supply voltage, 2.7V to 5.5V.
28 CLK input Clock input; data is latched on the rising edge of the clock.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-28-300mil
Category Data Converters
Pins 28

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Differential Nonlinearity DNL -1.75 0.5 1.75 LSB TA=+25°C, fCLOCK=25MSPS, fOUT=1.0MHz 2
Integral Nonlinearity INL -2.5 1 2.5 LSB TA=+25°C, fCLOCK=25MSPS, fOUT=1.0MHz 2
SFDR to Nyquist SFDR 71 77 dBc fOUT=1MHz, fCLOCK=25MSPS, TA=+25°C 2
Gain Error, Internal Reference -10 1 10 %FSR With Internal Reference 3
Gain Error, External Reference -10 2 10 %FSR With External Reference 3
Offset Error -0.025 0.025 %FSR With Internal Reference 3
Power-Supply Rejection, +VA -0.2 0.2 %FSR/V 3
Power-Supply Rejection, +VD -0.025 0.025 %FSR/V 3
Output Compliance Range -1 1.25 V 3
Full-Scale Output Range FSR 2 20 mA All Bits High, IOUT 3
Reference Input Compliance Range 0.1 1.25 V 3
Logic High Voltage, VIH VIH 3.5 5 V +VD = +5V 3
Logic Low Voltage, VIL VIL 0 1.2 V +VD = +5V 3
Logic High Voltage, VIH VIH 2 3 V +VD = +3V 3
Logic Low Voltage, VIL VIL 0 0.8 V +VD = +3V 3
Logic High Current IIH -20 20 µA +VD = +5V 3
Logic Low Current IIL -20 20 µA +VD = +5V 3
Analog Supply Voltage +VA 2.7 5 5.5 V 3
Digital Supply Voltage +VD 2.7 5 5.5 V 3
Supply Current IVA IVA 24 30 mA fCLOCK=50MSPS, fOUT=1.0MHz 3
Supply Current IVA, Power-Down Mode IVA 1.1 2 mA 3
Supply Current IVD IVD 8 15 mA fCLOCK=50MSPS, fOUT=1.0MHz 3
Power Dissipation 170 230 mW +5V, IOUT = 20mA 3
Output Update Rate fCLOCK 165 200 MSPS 4.5V to 5.5V 2
Output Update Rate fCLOCK 125 165 MSPS 2.7V to 3.3V 2
Operating Ambient Temperature TA -40 85 °C Full Specified Temperature Range 2
Clock Pulse HIGH Time t1 3 ns 5
Clock Pulse LOW Time t2 3 ns 5
Data Setup Time tS 1 ns 5
Data Hold Time tH 1.5 ns 5
+VA to AGND +VA -0.3 6 V 2
+VD to DGND +VD -0.3 6 V 2
AGND to DGND -0.3 0.3 V 2
+VA to +VD -6 6 V 2
CLK, PD to DGND -0.3 V max VD + 0.3V 2
D0-D11 to DGND -0.3 V max VD + 0.3V 2
IOUT, IOUT to AGND -1 V max VA + 0.3V 2
BW, BYP, REFIN, FSA, INT/EXT to AGND -0.3 V max VA + 0.3V 2
Junction Temperature TJ 150 °C 2
Case Temperature 100 °C 2
Storage Temperature Tstg 125 °C 2
Thermal Resistance, SO-28 θJA 75 °C/W SO-28 3
Gain Drift With Internal Reference 120 ppmFSR/°C ±120 3
Reference Voltage 1.24 V 3
Reference Tolerance -5 5 % 3
Reference Voltage Drift -50 50 ppmFSR/°C 3
Power Dissipation, Power-Down Mode 45 mW 3

CAD (KiCad official)

  • Symbol: DAC902U
  • Footprint: Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm
  • 3D model: SOIC-28-300mil (KiCad packages3D, STEP)
  • 3D model files: dac902u-etched.step / dac902u-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); dac902u.step / dac902u.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (26 pp, sha256 6db60c11e6789c94, retrieved 2026-10-31, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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