Current Noise Density, f = 1kHz
in
INPUT VOLTAGE RANGE Common-Mode Voltage Range Common-Mode Rejection
TA = –40°C to +85°C
VCM CMRR
INPUT IMPEDANCE Differential Common-Mode
Channel Separation (dual, quad)
PSRR
TA = –40°C to +85°C TA = –40°C to +85°C TA = –40°C to +85°C
TA = –40°C to +85°C TA = –40°C to +85°C TA = –40°C to +85°C
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111 Internet: / • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
±0.5
±1
±2
±0.5
±1
±2
0.22 0.11 12
8 8 8 0.2
VCM = (V–) +2V to (V+) –2V VCM = (V–) +2V to (V+) –2V
(V–) +2
(V+) –2
130
140
128
VCM = (V–) +2V to (V+) –2V
100 || 3 250 || 3
dVOS/dT
OPA277P, U (high grade, single)
OPA277P, U (high grade, dual)
All PA, UA Versions
Input Offset Voltage: (all models)
vs Time
vs Power Supply TA = –40°C to +85°C
OPA277 op amps are easy to use and free from phase inversion and overload problems found in some other op amps. They are stable in unity gain and provide excellent dynamic behavior over a wide range of load conditions. Dual and quad versions feature completely independent circuitry for lowest crosstalk and freedom from interaction, even when overdriven or overloaded.
OPA4277
V+ Out B –In B +In B
Out A 1
–In A 2 A
+In A 3
V+ 4
+In B 5 B
–In B 6
Out B 7
14 Out D
13 –In D D
12 +In D
11 V–
10 +In C C
9 –In C
8 Out C
8-Pin DIP, SO-8
14-Pin DIP, SO-14
APPLICATIONS
q TRANSDUCER AMPLIFIER q BRIDGE AMPLIFIER q TEMPERATURE MEASUREMENTS q STRAIN GAGE AMPLIFIER q PRECISION INTEGRATOR q BATTERY POWERED INSTRUMENTS q TEST EQUIPMENT
Single (OPA277) and dual (OPA2277) versions are available in 8-pin DIP and SO-8 surface-mount packages. The quad (OPA4277) comes in 14-pin DIP and SO-14 surface-mount packages. All are fully specified from –40°C to +85°C and operate from –55°C to +125°C.
Input Offset Current
IOS
TA = –40°C to +85°C
NOISE Input Voltage Noise, f = 0.1 to 10Hz
Input Voltage Noise Density, f = 10Hz en f = 100Hz
f = 1kHz
f = 10kHz
Total Harmonic Distortion + Noise THD+N
OUTPUT Voltage Output
TA = –40°C to +85°C
TA = –40°C to +85°C Short-Circuit Current
Capacitive Load Drive
ISC CLOAD
OPEN-LOOP GAIN
Open-Loop Voltage Gain
AOL
TA = –40°C to +85°C
FREQUENCY RESPONSE
Gain-Bandwidth Product
GBW
Slew Rate
SR
Settling Time, 0.1%
0.01%
Overload Recovery Time
VO = (V–)+0.5V to (V+)–1.2V, RL = 10kΩ
140
VO = (V–)+0.5V to (V+)–1.5V, RL = 2kΩ 126
134
VO = (V–)+0.5V to (V+)–1.5V, RL = 2kΩ 126
VS = ±15V, G = 1, 10V Step VS = ±15V, G = 1, 10V Step
®
OPA277
OPA2277
OPA4277
OPA277
OPA2277
OPA4277
OPA277 OPA2277 OPA4277
High Precision OPERATIONAL AMPLIFIERS
FEATURES
DESCRIPTION
q ULTRA LOW OFFSET VOLTAGE: 10µV q ULTRA LOW DRIFT: ±0.1µV/°C q HIGH OPEN-LOOP GAIN: 134dB q HIGH COMMON-MODE REJECTION: 140dB q HIGH POWER SUPPLY REJECTION: 130dB q LOW BIAS CURRENT: 1nA max q WIDE SUPPLY RANGE: ±2V to ±18V q LOW QUIESCENT CURRENT: 800µA/amp q SINGLE, DUAL, AND QUAD VERSIONS q REPLACES OP-07, OP-77, OP-177
OPA277
Offset Trim 1
8 Offset Trim
–In 2
7 V+
+In 3
6 Output
V– 4
5 NC
8-Pin DIP, SO-8
OPA2277
Out A 1
8
–In A 2
A
7
+In A 3
B
6
V– 4
5
The OPA277 series precision op amps replace the industry standard OP-177. They offer improved noise, wider output voltage swing, and are twice as fast with half the quiescent current. Features include ultra low offset voltage and drift, low bias current, high common-mode rejection, and high power supply rejection. Single, dual, and quad versions have identical specifications for maximum design flexibility.
(V+) –1.5
±35
See Typical Curve
OPA277 series op amps operate from ±2V to ±18V supplies with excellent performance. Unlike most op amps which are specified at only one supply voltage, the OPA277 series is specified for real-world applications; a single limit applies over the ±5V to ±15V supply range. High performance is maintained as the amplifiers swing to their specified limits. Because the initial offset voltage (±20µV max) is so low, user adjustment is usually not required. However, the single version (OPA277) provides external trim pins for special applications.