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AD8436ARQZ-R7

Analog Devices · Operational Amplifier · QSOP-20-150mil

AD8436ARQZ-R7 from Analog Devices, in a QSOP-20-150mil. 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	SUM	input	Summing amplifier input pin.
2	DNC	unconnected	Do not connect; reserved for factory test and must not be connected.
3	RMS	input	AC input to the RMS core; the datasheet recommends a voltage source (0 Ω source impedance) because the pin presents an 8 kΩ voltage-to-current input resistance, and AC coupling is recommended for near-zero output offset.
4	IBUFOUT	output	FET input buffer output pin; connect to IBUFIN− for unity gain.
5	IBUFIN-	input	FET input buffer inverting input pin.
6	IBUFIN+	input	FET input buffer non-inverting input pin; a large (10 MΩ) resistor to IGND is recommended to keep the high-impedance input from floating high.
7	IBUFGN	passive	Optional 10 kΩ precision gain resistor connection for the input buffer; ground it for 2× gain.
8	DNC	unconnected	Do not connect; reserved for factory test and must not be connected.
9	OGND	passive	Internal 16 kΩ current-to-voltage resistor connection to the RMS core output.
10	OUT	output	RMS core voltage or current output; behaves as a voltage source in series with 16 kΩ, and the ground connection is removed for current output.
11	VEE	power_in	Negative supply rail.
12	IGND	passive	Half-supply (mid-supply) node.
13	OBUFIN+	input	Output buffer non-inverting input pin.
14	OBUFIN-	input	Output buffer inverting input pin, with a matched internal 16 kΩ precision resistor in series.
15	OBUFOUT	output	Output buffer output pin.
16	OBUFV+	power_in	Output buffer supply pin; disconnect it (together with OBUFIN+ from OUT) to save power when the buffer is not used.
17	IBUFV+	power_in	Input buffer supply pin; connecting it to the positive supply rail is the only required supply connection for the buffer, since the negative rail is internally connected.
18	VCC	power_in	Positive supply rail for the RMS core.
19	CCF	passive	Crest factor capacitor connection (0.1 µF typical for improved crest-factor performance).
20	CAVG	passive	Averaging capacitor connection; the averaging capacitor sets the RMS accuracy and ripple (10 µF typical), and at least 470 pF is required for stability when it is in use.

Key specifications

Parameter	Value
Manufacturer	Analog Devices
Package	QSOP-20-150mil
Category	Operational Amplifier/Comparator
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
Input offset voltage (VOS), DC coupled	VOS	-500	0	500	μV	DC coupled	3
DC flip error		-1.5	0	1.5	%	DC coupled, VIN = ±300 mV	3
Nonlinearity		-0.2		0.2	%	eIN = 2 mV to 500 mV ac	3
Crest factor error (additional)		-0.5		0.5	%	1 < CF < 10, CCF = 0.1 μF	3
RMS core input resistance		7.92	8	8.08	kΩ		3
RMS core output resistance		15.68	16	16.32	kΩ		3
RMS core supply current			325	400	μA	no input	3
Input buffer offset voltage		-1	0	1	mV		3
Input buffer supply current		100	160	200	μA		3
Optional gain resistance (pin IBUFGN)		-9.9	10	10.1	kΩ		3
Output buffer offset voltage		-200	0	200	μV	RL = ∞, connected to pin OUT	3
Output buffer input current (IB)	IB		2	51	nA	maximum measured at power-up; settles to typ within 15 s	3
Output buffer drive current		-0.5		15	mA	min = sink, max = source	3
Output buffer gain error			0.003	0.01	%	RL = ∞	3
Output buffer supply current			40	70	μA		3
Supply voltage, dual supply		2.4		18	V	dual supply (±VS)	3
Supply voltage, single supply		4.8		36	V	single supply	3
Supply voltage (absolute maximum)		-18		18	V		4
Power dissipation, RQ package				1.1	W	RQ-20 package	4
Operating temperature range		-40		125	°C		4
Storage temperature range		-65		125	°C		4
Lead soldering temperature				300	°C	60 s	4
Junction-to-ambient thermal resistance, RQ-20	θJA			95	°C/W	worst case, device soldered to board	4
ESD rating				2	kV	model not stated	4

CAD (KiCad official)

Symbol: AD8436ARQZ-R7
Footprint: Package_SO:QSOP-20_3.9x8.7mm_P0.635mm
3D model: QSOP-20-150mil (KiCad packages3D, STEP)
3D model files: ad8436arqz-r7-etched.step / ad8436arqz-r7-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ad8436arqz-r7.step / ad8436arqz-r7.glb are the bare package body.

Provenance

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

Datasheet: Analog Devices datasheet (20 pp, sha256 df560e244b8b695c, retrieved 2026-10-18, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
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