RCV420KP from Texas Instruments, in a PDIP-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	-In	input	Inverting current input for the 4-20mA loop signal, with a common-mode input range of ±40V.
2	CT	passive	Center tap of the two matched 75Ω sense resistors, returned to ground to complete the current path.
3	+In	input	Non-inverting current input for the 4-20mA loop signal, with a common-mode input range of ±40V.
4	V-	power_in	Negative power supply; rated -15V, with a specified range of -11.4V to -18V and an absolute maximum supply of ±22V.
5	Ref Com	power_in	Common (ground) return for the 10V voltage reference.
6	NC	unconnected	No internal connection.
7	Ref Noise Reduction	passive	Connect an external capacitor to ground here to reduce reference high-frequency noise, for example 0.1µF lowers it to about 200µVp-p at the reference output.
8	Ref Trim	passive	Voltage reference output trim input, giving a typical trim range of ±4%.
9	NC	unconnected	No internal connection.
10	Ref fB	passive	Reference amplifier feedback connection, wired to Ref Out in the reference circuit; the datasheet gives no separate electrical limits for this pin.
11	Ref Out	output	10V precision reference output, 10.01V typical with a drift of 5ppm/°C, rated for +10mA and -2mA output current.
12	Ref In	input	Level-shifting input for the reference, attenuated 8:1 to Rcv Out, and must be grounded if not used for level shifting to maintain high CMR.
13	Rcv Com	power_in	Receiver common (ground) connection, which requires a low source impedance to maintain high CMR.
14	Rcv Out	output	Receiver output that converts the 4-20mA input to a 0 to 5V signal, rated for +10mA and -5mA output current.
15	Rcv fB	passive	Receiver amplifier feedback pin, where a small resistor may be inserted in the feedback path to increase gain.
16	V+	power_in	Positive power supply; rated +15V, with a specified range of +11.4V to +18V and an absolute maximum supply of ±22V.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	PDIP-16
Category	Operational Amplifier/Comparator
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
Sense Resistance		74.25	75	75.75	Ω		2
Error			0.05	0.15	% of span		2
Nonlinearity			0.0002	0.002	% of span		2
CMR		70	80		dB		2
Offset Voltage vs Supply			74	90	dB	vs Supply (±11.4V to ±18V)	2
Zero Error Initial			0.025	0.075	% of span	Initial, with 4mA input signal and Voltage Reference connected	2
Rated Voltage			10	12	V	IO = +10mA, -5mA	2
Rated Current		-5		10	mA	EO = 10V	2
Current Limit		-13		49	mA	To Common	2
Capacitive Load				1000	pF	Stable Operation	2
Common-Mode Voltage		-40		40	V		2
Initial Voltage Reference		9.99		10.01	V	Initial	2
Trim Range		-4		4	%		2
Output Current (Voltage Reference)		-2		10	mA		2
Voltage Range				18	V	Voltage Range ±18 V maximum; printed as -5, +11.4 ±18 V	2
Quiescent Current			3	4	mA	VO = 0V	2
Specification Temperature Range		0		70	°C		2
Operation Temperature Range		-25		85	°C		2
Storage Temperature Range		-40		85	°C		2
Thermal Resistance, θJA	θJA		80		°C/W		2
Supply		-22		22	V	±22V	3
Input Current, Continuous				40	mA	Continuous	3
Input Current Momentary				250	mA	0.1s, 1% duty cycle	3
Common-Mode Input Voltage, Continuous		-40		40	V	Continuous	3
Lead Temperature				300	°C	Soldering, 10s	3

CAD (KiCad official)

Symbol: RCV420KP
Footprint: Package_DIP:DIP-16_W7.62mm
3D model: PDIP-16 (KiCad packages3D, STEP)
3D model files: rcv420kp-etched.step / rcv420kp-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rcv420kp.step / rcv420kp.glb are the bare package body.

Provenance

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

Datasheet: Texas Instruments datasheet (14 pp, sha256 7a361903e2c54507, retrieved 2026-11-02, tier: lcsc)
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

RCV420KP

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3D Model

Symbol & Footprint

Schematic Symbol

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Datasheet

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