ADS1259IPWR 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	AINP	input	Positive analog input of the ADC.
2	AINN	input	Negative analog input of the ADC.
3	RESET/PWDN	input	Digital input for reset (active low) and power-down; hold low to power down the device.
4	START	input	Digital input that starts conversions when active high.
5	SYNCOUT	output	Digital output carrying the sync clock at fCLK/8.
6	CS	input	SPI chip-select input, active low; CS can be tied low.
7	SCLK	input	SPI serial clock input; holding SCLK low longer than 2^16 x tCLK cycles resets the SPI interface when enabled by the SPI register bit.
8	DIN	input	SPI serial data input, sampled on the SCLK falling edge with specified setup and hold times.
9	DOUT	output	SPI serial data output, updated on the SCLK rising edge.
10	DRDY	output	Data-ready output, active low, indicating new conversion data is available.
11	XTAL1/CLKIN	input	ADC clock input: DGND for the internal oscillator, external clock input when using an external clock, or crystal connection when using a crystal oscillator.
12	XTAL2	passive	External crystal connection, otherwise no connection.
13	BYPASS	passive	Core voltage bypass pin.
14	DGND	power_in	Digital ground.
15	DVDD	power_in	Digital power supply, 2.7V to 5.25V per the electrical characteristics.
16	REFOUT	output	Positive reference output.
17	VREFP	input	Positive reference input.
18	VREFN	input	Negative reference input.
19	AVSS	power_in	Negative analog power supply and negative reference output.
20	AVDD	power_in	Positive analog power supply, AVSS + 4.75V to AVSS + 5.25V per the electrical characteristics.

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
AVDD to AVSS		-0.3		5.5	V		2
AVSS to DGND		-2.8		0.3	V		2
DVDD to DGND		-0.3		5.5	V		2
Input current, momentary		-100		100	mA		2
Input current, continuous		-10		10	mA		2
Maximum junction temperature				150	°C		2
Operating temperature range		-40		125	°C		2
Storage temperature range		-60		150	°C		2
Data rate (fDATA)	fDATA	10		14400	SPS		3
Integral nonlinearity	INL	-0.001	0.0003	0.001	%FSR	Best fit method	3
Offset error		-250	40	250	μV		3
Offset drift			0.05	0.25	μV/°C	TA = -40°C to +105°C	3
Gain error		-0.5	0.05	0.5	%	Excludes internal reference error	3
Gain drift			0.5	2.5	ppm/°C	TA = -40°C to +105°C	3
Common-mode rejection	CMRR	100	120		dB	60Hz, ac	3
AVDD, AVSS power-supply rejection	PSRR	85	95		dB	60Hz, ac	3
DVDD power-supply rejection	PSRR	85	110		dB	60Hz, ac	3
Out-of-range threshold level		-105		105	%FSR	Threshold(7)	3
Out-of-range threshold accuracy		-0.5		0.5	%FSR		3
Reference input range	VREF	0.5		2.5	V	VREF = (VREFP, VREFN)	3
Internal reference accuracy		-0.4		0.4	%	TA = +25°C	3
Internal reference temperature drift			10	40	ppm/°C	TA = -40°C to +105°C	3
Internal reference temperature drift			2	5	ppm/°C	TA = 0°C to +85°C	3
Drive current sink and source		-10		10	mA		3
Internal oscillator accuracy		-2	0.2	2	%		4
Internal oscillator frequency range	fCLK	2	7.3728	8	MHz		4
Crystal oscillator frequency range	fCLK	0.1	7.3728	8	MHz		4
External clock duty cycle		40		60	%		4
Input leakage		-10		10	μA	0 < VDIGITAL INPUT < DVDD	4
AVSS supply voltage	AVSS	-2.6		0	V		4
DVDD supply voltage	DVDD	2.7		5.25	V		4
Operating current, AVDD and AVSS			2.3	3.8	mA	reference enabled	4
Sleep mode AVDD, AVSS current			1	40	μA	reference disabled	4
Power-Down mode AVDD, AVSS current			1	40	μA		4
Operating DVDD current			500	700	μA		4
Sleep mode DVDD current			160	300	μA		4
Power-Down mode DVDD current			1	10	μA		4
Operating power dissipation			13	22	mW		4
Sleep mode power dissipation			0.5	1.2	mW	reference disabled	4
Power-Down mode power dissipation			10	240	μW		4
Specified temperature range		-40		105	°C		4

CAD (KiCad official)

Symbol: ADS1259IPWR
Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
3D model: TSSOP-20 (KiCad packages3D, STEP)
3D model files: ads1259ipwr-etched.step / ads1259ipwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ads1259ipwr.step / ads1259ipwr.glb are the bare package body.

Provenance

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

Datasheet: Texas Instruments datasheet (51 pp, sha256 92901308b988fecf, retrieved 2026-11-05, 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

ADS1259IPWR

Verified ADS1259IPWR

Verification log 1 record

3D Model

Symbol & Footprint

Schematic Symbol

PCB Footprint

Datasheet

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