OPA2277U/2K5.B

Operational Amplifier

The OPA2277U/2K5.B is a operational amplifier from Texas Instruments. View the full OPA2277U/2K5.B datasheet below including electrical characteristics, absolute maximum ratings.

Manufacturer

Texas Instruments

Overview

Part: OPA277, OPA2277, OPA4277 from Texas Instruments

Type: High-Precision Operational Amplifier

Description: The OPAx277 series are high-precision operational amplifiers featuring ultra-low 10 μV offset voltage, ±0.1 μV/°C drift, 134 dB open-loop gain, and a wide ±2 V to ±18 V supply range with 800 μA/amplifier quiescent current.

Operating Conditions:

Supply voltage: ±2 V to ±18 V (dual supply), 4 V to 36 V (single supply)
Operating temperature: -40 to 85 °C

Absolute Maximum Ratings:

Max supply voltage: 36 V
Max junction temperature: 150 °C
Max storage temperature: 125 °C

Key Specs:

Ultra-low offset voltage: 10 μV
Ultra-low drift: ±0.1 μV/°C
High open-loop gain: 134 dB
High common-mode rejection: 140 dB
High power-supply rejection: 130 dB
Low bias current: 1 nA maximum
Low quiescent current: 800 μA/amplifier

Features:

Ultra-low offset voltage: 10 μV
Ultra-low drift: ±0.1 μV/°C
High open-loop gain: 134 dB
High common-mode rejection: 140 dB
High power-supply rejection: 130 dB
Low bias current: 1-nA maximum
Wide supply range: ±2 V to ±18 V
Low quiescent current: 800 μA/amplifier
Single, dual, and quad versions
Replaces OP-07, OP-77, and OP-177

Applications:

Analog input module
Weigh scale
Temperature transmitter
Pressure transmitter
Data acquisition (DAQ)
Lab and field instrumentation
Battery test

Package:

D (SOIC, 8)
DRM (VSON, 8)
P (PDIP, 8)
D (SOIC, 14)
P (PDIP, 14)

Features

Ultra-low offset voltage: 10 μV
Ultra-low drift: ±0.1 μV/°C
High open-loop gain: 134 dB
High common-mode rejection: 140 dB
High power-supply rejection: 130 dB
Low bias current: 1-nA maximum
Wide supply range: ±2 V to ±18 V
Low quiescent current: 800 μA/amplifier
Single, dual, and quad versions
Replaces OP-07, OP-77, and OP-177
For similar performance with ±40-V overvoltage protection, see the OPA2206

Applications

50nV/div

0.1-Hz to 10-Hz Noise

Pin Configuration

Figure 5-1. OPA277 P Package, 8-Pin PDIP and D Package, 8-Pin SOIC (Top View)

Figure 5-2. OPA277 DRM Package, 8-Pin VSON (Top View)

Table 5-1. Pin Functions: OPA277

PIN	PIN	TYPE
NAME	NO.
-In	2	Input
+In	3	Input
NC	5	-
Offset Trim	1	-
Offset Trim	8	-
Output	6	Output
V-	4	-
V+	7	-

Figure 5-3. OPA2277 P Package, 8-Pin PDIP and D Package, 8-Pin SOIC (Top View)

Table 5-1. Pin Functions: OPA277

Figure 5-4. OPA2277 DRM Package, 8-Pin VSON (Top View)

Figure 5-3. OPA2277 P Package, 8-Pin PDIP and D Package, 8-Pin SOIC (Top View)

Electrical Characteristics

at T A = 25°C, VS = 10 V to 30 V, V CM = V OUT = VS / 2, and R L = 2 kΩ connected to VS / 2 (unless otherwise noted)

	PARAMETER	TEST CONDITIONS	TEST CONDITIONS	MIN	TYP	MAX	UNIT
OFFSET VOLTAGE	OFFSET VOLTAGE	OFFSET VOLTAGE	OFFSET VOLTAGE	OFFSET VOLTAGE	OFFSET VOLTAGE	OFFSET VOLTAGE	OFFSET VOLTAGE
		OPA277P, U			±10	±20	μV
		OPA2277P, U			±10	±25	μV
		OPAx277PA, UA			±20	±50	μV
		OPAx277AIDRM			±35	±100	μV
V OS	Input offset voltage	T = -40°C to +85°C	OPA277P, U OPA2277P, U			±30 ±50	μV μV
		A	OPAx277PA, UA OPAx277AIDRM			±100 ±165	μV μV
dV OS /dT		T A = -40°C to +85°C	OPA277P, U		±0.1	±0.15
dV OS /dT	Input offset voltage drift		OPA2277P, U		±0.1	±0.25	μV/°C
dV OS /dT	Long-term drift		OPAx277AIDRM, PA, UA		±0.15 0.2	±1	μV/°C μV/mo
PSRR			OPAx277P, U		±0.3	±0.5	μV/V
	Power-supply rejection	V S = ±2 V to ±18 V	OPAx277AIDRM, PA, UA		±0.3	±1	μV/V
	ratio	V S = ±2 V to ±18 V,	OPAx277P, U			±0.5	μV/V
		T A = -40°C to +85°C	OPAx277AIDRM, PA, UA			±1	μV/V
	Channel separation (dual, quad)	dc			0.1		μV/V
INPUT BIAS CURRENT	INPUT BIAS CURRENT	INPUT BIAS CURRENT	INPUT BIAS CURRENT	INPUT BIAS CURRENT	INPUT BIAS CURRENT	INPUT BIAS CURRENT	INPUT BIAS CURRENT
I B	Input bias current	OPAx277P, U			±0.5	±1	nA
I B		OPAx277AIDRM, PA, UA			±0.5	±2.8	nA
I B			OPAx277P, U			±2	nA
I B		T A = -40°C to +85°C	OPAx277AIDRM, PA, UA			±4	nA
I OS	Input offset current	OPAx277P, U			±0.5	±1	nA
I OS		OPAx277AIDRM, PA, UA			±0.5	±2.8	nA
I OS		T A = -40°C to +85°C	OPAx277P, U OPAx277AIDRM, PA, UA			±2 ±4	nA
NOISE	NOISE	NOISE	NOISE	NOISE	NOISE	NOISE	NOISE
	Input voltage noise	f = 0.1 Hz to 10 Hz			0.22		μV PP
e n		f = 10 Hz			12
	Input voltage noise	f = 100 Hz			8		nV/√Hz
	density	f = 1 kHz f = 10 kHz			8 8		nV/√Hz nV/√Hz
i n	Input current noise density	f = 1 kHz			0.2		pA/√Hz
INPUT VOLTAGE	INPUT VOLTAGE	INPUT VOLTAGE	INPUT VOLTAGE	INPUT VOLTAGE	INPUT VOLTAGE	INPUT VOLTAGE	INPUT VOLTAGE
V CM	Common-mode voltage range			(V-) + 2		(V+) - 2	V
CMRR		V = (V-) + 2 V to (V+) - 2 V	OPAx277P, U	130	140		dB
	Common-mode rejection	CM	OPAx277AIDRM, PA, UA	115	140		dB
	ratio	V CM = (V-) + 2 V to (V+) - 2 V, T A = -40°C to +85°C	OPAx277P, U OPAx277AIDRM, PA, UA	128 115			dB
INPUT IMPEDANCE	INPUT IMPEDANCE	INPUT IMPEDANCE	INPUT IMPEDANCE	INPUT IMPEDANCE	INPUT IMPEDANCE	INPUT IMPEDANCE	INPUT IMPEDANCE
Z ID	Differential				100 \|\| 3		MΩ \|\| pF
Z IC	Common-mode	V CM = (V-) + 2 V to (V+) - 2 V			250 \|\| 3		GΩ \|\| pF

at T A = 25°C, VS = 10 V to 30 V, V CM = V OUT = VS / 2, and R L = 2 kΩ connected to VS / 2 (unless otherwise noted)

Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted) (1)

		MIN	MAX	UNIT
V S	Supply voltage, V S = (V+) - (V-)		36	V
	Input voltage (2)	(V-) - 0.7	(V+) + 0.7	V
I SC	Output short circuit (3)	Continuous	Continuous
T J	Junction temperature		150	°C
T STG	Storage temperature	-55	125	°C

(2) Limit input signals that can swing more than 0.7 V beyond the supply rails to 10 mA or less.
(3) Short-circuit to ground, one amplifier per package.

Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

			MIN	NOM	MAX	UNIT
V S	Supply voltage, V S = (V+) - (V-)	Single supply	4	30	36	V
V S		Dual supply	±2	±15	±18	V
T A	Ambient temperature		-40		85	°C

Thermal Information

		OPA277	OPA277	OPA277
THERMAL METRIC (1)	THERMAL METRIC (1)	D (SOIC)	DRM (VSON)	P (PDIP)
		8 PINS	8 PINS	8 PINS
R θJA	Junction-to-ambient thermal resistance	110.1	40.7	49.2
R θJC(top)	Junction-to-case(top) thermal resistance	52.2	41.3	39.4
R θJB	Junction-to-board thermal resistance	52.3	16.7	26.4
ψ JT	Junction-to-top characterization parameter	10.4	0.6	15.4
ψ JB	Junction-to-board characterization parameter	51.5	16.9	26.3
R θJC(bot)	Junction-to-case(bottom) thermal resistance	N/A	3.3	N/A

Typical Application

The OPAx277 family offers outstanding dc precision and ac performance. These devices operate up to 36-V supply rails and offer ultralow offset voltage and offset voltage drift, as well as 1-MHz bandwidth and high capacitive load drive. These features make the OPAx277 a robust, high-performance operational amplifier for high-voltage industrial applications.

Related Variants

The following components are covered by the same datasheet.

Part Number	Manufacturer	Package
OPA2277	Texas Instruments	—
OPA2277-EP	Texas Instruments	—
OPA2277AIDRMT	Texas Instruments	—
OPA2277P	Texas Instruments	—
OPA2277P.B	Texas Instruments	—
OPA2277PA	Texas Instruments	—
OPA2277PA.B	Texas Instruments	—
OPA2277U	Texas Instruments	—
OPA2277U.B	Texas Instruments	—
OPA2277U/2K5	Texas Instruments	—
OPA2277UA	Texas Instruments	—
OPA2277UA.B	Texas Instruments	—
OPA2277UA/2K5	Texas Instruments	—
OPA2277UA/2K5.B	Texas Instruments	—
OPA2277UA1G4	Texas Instruments	—

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