AD7747ARUZ from Analog Devices, in a TSSOP-16. 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	SCL	input	Serial interface clock input that connects to the master clock line and requires a pull-up resistor if one is not already provided in the system.
2	RDY	output	Logic output whose falling edge indicates that a conversion on the enabled channel(s) has finished and new data is available; leave as an open circuit if not used.
3	SHLD	passive	Capacitive input for active AC shielding, used to shield the sensor connection and eliminate CIN parasitic capacitance to ground; leave as an open circuit if not used.
4	TST	unconnected	Test pin that must be left as an open circuit for proper operation.
5	REFIN(+)	input	Positive differential voltage reference input for the voltage channel (ADC); not used for CDC conversion, and if unused it can be left open or connected to GND.
6	REFIN(-)	input	Negative differential voltage reference input for the voltage channel (ADC); not used for CDC conversion, and if unused it can be left open or connected to GND.
7	CIN1(-)	passive	CDC negative capacitive input; the measured capacitance is connected between CIN1(-) and GND, and the pin should be left open if not used.
8	CIN1(+)	passive	CDC positive capacitive input; the measured capacitance is connected between CIN1(+) and GND, and the pin should be left open if not used.
9	NC	unconnected	Not connected; this pin should be left as an open circuit.
10	NC	unconnected	Not connected; this pin should be left as an open circuit.
11	VIN(+)	power_in	Positive differential voltage input for the voltage channel (ADC), also used to connect an external temperature sensing diode; if not used it can be left open or connected to GND.
12	VIN(-)	power_in	Negative differential voltage input for the voltage channel (ADC), also used to connect an external temperature sensing diode; if not used it can be left open or connected to GND.
13	GND	power_in	Ground pin.
14	VDD	power_in	Power supply voltage pin that should be decoupled to GND with a low impedance capacitor, for example a 10 µF tantalum in combination with a 0.1 µF multilayer ceramic.
15	NC	unconnected	Not connected; this pin should be left as an open circuit.
16	SDA	bidirectional	Serial interface bidirectional data pin that connects to the master data line and requires a pull-up resistor if not provided elsewhere in the system.

Key specifications

Parameter	Value
Manufacturer	Analog Devices
Package	TSSOP-16
Category	ADC/DAC/Data Conversion
Pins	16

Electrical characteristics

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

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
Positive supply voltage VDD to GND	VDD	-0.3		6.5	V	VDD to GND	6
Voltage on any input or output pin to GND		-0.3			V		6
ESD rating (ESD Association Human Body Model, S5.1)		2000			V	ESD Association Human Body Model, S5.1	6
Operating temperature range		-40		125	°C		6
Storage temperature range		-65		150	°C		6
Junction temperature				150	°C		6
Peak reflow soldering temperature, Pb free				260	°C	Pb free, 20 sec to 40 sec	6
TSSOP package thermal impedance, junction to air	θJA		128		°C/W	Thermal impedance to air	6
TSSOP package thermal impedance, junction to case	θJC		14		°C/W	Thermal impedance to case	6
Supply voltage range	VDD	2.7		5.25	V	Single-supply operation	1
Update rate		5		45	Hz		1
Common-mode (not changing) capacitance				17	pF	Common-mode (not changing) capacitance	1
Conversion input range		-8.192		8.192	pF	Factory calibrated	3
Integral nonlinearity (INL)		-0.01		0.01	% of FSR		3
No missing codes		24			Bit	Conversion time ≥ 124 ms	3
Absolute error		-10		10	fF	25°C, VDD = 5 V, after offset calibration	3
System offset calibration range		-1		1	pF		3
Gain drift vs. temperature		-23	-26	-29	ppm of FS/°C		3
Analog VIN input current drift		-50		50	pA/V/°C		3
No missing codes (voltage input)		24			Bit	Conversion time = 122.1 ms	3
Offset error (voltage input)		-3		3	μV		3
Error, internal temperature sensor		-2		2	°C	Internal temperature sensor	3
Error, external sensing diode		-2		2	°C	External sensing diode	3
CAPDAC full range (absolute value)		-20		20	%	Absolute value, not factory calibrated	22
SCL frequency		0		400	kHz		5
Serial resistance on CIN				10	kΩ	For specified performance	23
Total serial resistance, external temperature sensor (RS1 + RS2)				100	Ω	Compensated total serial resistance	24
Differential input capacitance CX, CY				8	pF	Without CAPDACs	22
Differential input capacitance CX, CY balanced by CAPDACs				25	pF	Balanced by CAPDACs	22
Self-heating of internal temperature sensor				0.5	°C	VDD = 5 V	24

CAD (KiCad official)

Symbol: AD7747ARUZ
Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
3D model: TSSOP-16 (KiCad packages3D, STEP)
3D model files: ad7747aruz-etched.step / ad7747aruz-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ad7747aruz.step / ad7747aruz.glb are the bare package body.

Provenance

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

Datasheet: Analog Devices datasheet (28 pp, sha256 4d73ef988f6cb324, retrieved 2026-10-30, 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).

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AD7747ARUZ

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