DAC81401PWR from Texas Instruments, in a TSSOP-20. 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	VREFIO	bidirectional	Internal reference output or external reference input; connect a 150nF capacitor to ground.
2	VREFGND	input	Reference ground, connects to 0V.
3	AVSS	power_in	Negative power supply; AVSS to GND is specified from -21.5 V to 0 V.
4	NC	unconnected	Must be left unconnected, pin floating.
5	AVDD	power_in	Positive power supply; AVDD to GND is specified from 4.5 V to 41.5 V.
6	NC	unconnected	Must be left unconnected, pin floating.
7	CCOMP	input	External compensation capacitor connection for VOUT; a 470pF typical capacitor improves stability with capacitive loads up to 1μF at the cost of increased settling time.
8	NC	unconnected	Must be left unconnected, pin floating.
9	VOUT	output	DAC voltage output pin.
10	VSENSEP	input	Sense output pin for the positive voltage output load connection.
11	VSENSEN	input	Connect to 0V.
12	FAULT	output	Open-drain FAULT output that goes low when a fault condition is detected; requires an external 10kΩ pullup resistor.
13	SDO	output	Serial data output; data are valid on the rising or falling edge of SCLK as set by FSDO.
14	SCLK	input	Serial clock input of the SPI, supporting rates up to 50MHz, with Schmitt-trigger logic input.
15	SDIN	input	Serial data input; data are clocked into the register on the falling edge of the serial clock, with Schmitt-trigger logic input.
16	SYNC	input	SPI bus chip select input (active low); data bits are not clocked into the shift register unless SYNC is low, and SDO is Hi-Z when SYNC is high.
17	IOVDD	power_in	IO pin power supply, specified from 1.7 V to 5.5 V to GND.
18	NC	unconnected	Must be left unconnected, pin floating.
19	GND	power_in	Digital and analog ground, connects to 0V.
20	VDD	power_in	Digital and analog power supply, specified from 4.5 V to 5.5 V to GND.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	TSSOP-20
Category	Data Acquisition
Pins	20

Electrical characteristics

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

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
VDD to GND		-0.3		6	V		4
IOVDD to GND		-0.3		6	V		4
AVDD to GND		-0.3		44	V		4
AVSS to GND		-22		0.3	V		4
AVDD to AVSS		-0.3		44	V		4
VREFGND / VSENSEN to GND		-0.3		0.3	V		4
FAULT to GND		-0.3		6	V		4
Input current into any digital pin (SCLK, SDIN, SDO, SYNC)		-10		10	mA		4
Operating junction temperature	TJ	-40		150	°C		4
Storage temperature	Tstg	-60		150	°C		4
VDD to GND		4.5		5.5	V		4
IOVDD to GND		1.7		5.5	V		4
AVDD to GND		4.5		41.5	V		4
AVSS to GND		-21.5		0	V		4
AVDD to AVSS		4.5		43	V		4
Operating ambient temperature	TA	-40		125	°C		4
Relative accuracy INL	INL	-1	0.4	1	LSB	DAC81401, all ranges except 0V to 40V range	5
Relative accuracy INL	INL	-2		2	LSB	DAC81401, 0V to 40V range	5
Differential nonlinearity DNL	DNL	-1	0.3	1	LSB		5
Total unadjusted error TUE	TUE	-0.09		0.09	%FSR	Unipolar ranges, AVSS = 0V	5
Total unadjusted error TUE	TUE	-0.07		0.07	%FSR	Unipolar ranges, AVSS = 0V, 0°C ≤ TA ≤ 50°C	5
Total unadjusted error TUE	TUE	-0.095		0.095	%FSR	Bipolar ranges, -21.5V ≤ AVSS < 0V	5
Offset error OE	OE	-0.05		0.05	%FSR	Unipolar ranges, AVSS = 0V	5
Offset error temperature coefficient OE-TC	OE-TC	-2		2	ppmFSR/°C	Unipolar ranges, AVSS = 0V	5
Zero-code (negative full scale) error ZCE	ZCE			0.15	%FSR	Unipolar ranges, AVSS = 0V	5
Zero-code (negative full scale) error ZCE	ZCE			0.05	%FSR	Bipolar ranges, -21.5V ≤ AVSS < 0V	5
Full-scale error FSE	FSE	-0.08		0.08	%FSR	Unipolar ranges, AVSS = 0V	5
Full-scale error temperature coefficient FSE-TC	FSE-TC	-3		3	ppmFSR/°C		5
Gain error GE	GE	-0.075		0.075	%FSR	Unipolar ranges, AVSS = 0V	5
Bipolar gain error BPGE	BPGE	-0.065		0.065	%FSR	Bipolar ranges, -21.5V ≤ AVSS < 0V	5
Gain error temperature coefficient GE-TC	GE-TC	-2		2	ppmFSR/°C		5
Bipolar zero (midscale) error BPZE	BPZE	-0.04		0.04	%FSR	Bipolar ranges, -21.5V ≤ AVSS < 0V	5
Bipolar zero (midscale) error temperature coefficient BPZE-TC	BPZE-TC	-2		2	ppmFSR/°C	Bipolar ranges, -21.5V ≤ AVSS < 0V	5
Output voltage	VOUT	0		5	V	0V to 5V range	6
Output voltage	VOUT	0		6	V	20% overrange of 0V to 5V	6
Output voltage	VOUT	0		10	V	0V to 10V range	6
Output voltage	VOUT	0		12	V	20% overrange of 0V to 10V	6
Output voltage	VOUT	0		20	V	0V to 20V range	6
Output voltage	VOUT	0		24	V	20% overrange of 0V to 20V	6
Output voltage	VOUT	0		40	V	0V to 40V range	6
Output voltage	VOUT	-5		5	V	-5V to +5V range	6
Output voltage	VOUT	-6		6	V	20% overrange of -5V to +5V	6
Output voltage	VOUT	-10		10	V	-10V to +10V range	6
Output voltage	VOUT	-12		12	V	20% overrange of -10V to +10V	6
Output voltage	VOUT	-20		20	V	-20V to +20V range	6
Output voltage headroom (to AVDD) and footroom (to AVSS)				1.25	V	-10mA ≤ load current ≤ 10mA	6
Output voltage headroom (to AVDD) and footroom (to AVSS)				1.5	V	5.5V < AVDD ≤ 41.5V, −15mA ≤ load current ≤ +15mA	6
Short-circuit current IOS	IOS			40	mA	Full-scale output shorted to AVSS	6
Short-circuit current IOS	IOS			25	mA	Zero-scale output shorted to AVDD, 4.5V ≤ AVDD ≤ 5.5V	6
Load regulation				50	µV/mA	DAC at midscale, -15mA ≤ load current ≤ +15mA	6
Capacitive load CL	CL			2	nF	RLOAD = open, CCOMP pin left floating	6
Capacitive load CL	CL			1	µF	RLOAD = open, CCOMP pin = 470pF ±10% to VOUT	6
Junction-to-ambient thermal resistance RθJA	RθJA		83.1		°C/W	PW (TSSOP) 20 pins	5
Junction-to-case (top) thermal resistance RθJC(top)	RθJC(top)		21.7		°C/W	PW (TSSOP) 20 pins	5
Junction-to-board thermal resistance RθJB	RθJB		36		°C/W	PW (TSSOP) 20 pins	5
Junction-to-board characterization parameter ΨJB	ΨJB		35.4		°C/W	PW (TSSOP) 20 pins	5

CAD (KiCad official)

Symbol: DAC81401PWR
Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
3D model: TSSOP-20 (KiCad packages3D, STEP)
3D model files: dac81401pwr-etched.step / dac81401pwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); dac81401pwr.step / dac81401pwr.glb are the bare package body.

Provenance

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

Datasheet: Texas Instruments datasheet (55 pp, sha256 8d810beb78f170e9, retrieved 2026-11-02, tier: manufacturer)
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

DAC81401PWR

Verified DAC81401PWR

Verification log 1 record

3D Model

Symbol & Footprint

Schematic Symbol

PCB Footprint

Datasheet

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