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OPA2277U-2K5

更新时间： 2024-11-03 12:05:15
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德州仪器 - TI 运算放大器
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27页 1457K
描述
High Precision OPERATIONAL AMPLIFIERS

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OPA2277U-2K5 数据手册

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O
O
P
A
2
2
P
A
2
O
7
7
7
P
A
4
7
OPA277  
OPA2277  
OPA4277  
2
7
7
OPA2277  
OPA277  
O
P
A
4277  
O
P
O
P
A
A
2
2
2
7
7
7
7
SBOS079A – MARCH 1999 – REVISED APRIL 2005  
High Precision  
OPERATIONAL AMPLIFIERS  
FEATURES  
DESCRIPTION  
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.  
ꢀ ULTRA LOW OFFSET VOLTAGE: 10µV  
ꢀ ULTRA LOW DRIFT: ±0.1µV/°C  
ꢀ HIGH OPEN-LOOP GAIN: 134dB  
ꢀ HIGH COMMON-MODE REJECTION: 140dB  
ꢀ HIGH POWER SUPPLY REJECTION: 130dB  
ꢀ LOW BIAS CURRENT: 1nA max  
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 exter-  
nal trim pins for special applications.  
ꢀ WIDE SUPPLY RANGE: ±2V to ±18V  
ꢀ LOW QUIESCENT CURRENT: 800µA/amplifier  
ꢀ SINGLE, DUAL, AND QUAD VERSIONS  
ꢀ REPLACES OP-07, OP-77, OP-177  
APPLICATIONS  
ꢀ TRANSDUCER AMPLIFIER  
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 free-  
dom from interaction, even when overdriven or overloaded.  
ꢀ BRIDGE AMPLIFIER  
ꢀ TEMPERATURE MEASUREMENTS  
ꢀ STRAIN GAGE AMPLIFIER  
ꢀ PRECISION INTEGRATOR  
ꢀ BATTERY POWERED INSTRUMENTS  
ꢀ TEST EQUIPMENT  
Single (OPA277) and dual (OPA2277) versions are available  
in DIP-8, SO-8, and DFN-8 (4mm x 4mm) packages. The quad  
(OPA4277) comes in DIP-14 and SO-14 surface-mount pack-  
ages. All are fully specified from –40°C to +85°C and operate  
OPA277  
Offset Trim  
1
2
3
4
8
7
6
5
Offset Trim  
V+  
from –55°C to +125°C.  
OPA277AIDRM  
–In  
+In  
V–  
Output  
NC  
Offset Trim  
−In  
1
2
3
4
8
7
6
5
Offset Trim  
V+  
OPA4277  
Pin 1  
Indicator  
Out A  
–In A  
+In A  
V+  
1
14 Out D  
13 –In D  
12 +In D  
11 V–  
8-Pin DIP, SO-8  
2
3
4
5
6
7
+In  
Output  
NC  
A
B
D
C
OPA2277AIDRM  
V−  
Out A  
−In A  
+In A  
V−  
1
2
3
4
8
7
6
5
Out B  
+In B  
–In B  
Out B  
10 +In C  
Pin 1  
Indicator  
DFN-8 4mm x 4mm  
(top view)  
9
8
–In C  
OPA2277  
Thermal Pad  
on Bottom  
(Connect to V−)  
V+  
Out C  
Out A  
–In A  
+In A  
V–  
1
2
3
4
8
V+  
−In B  
+In B  
A
14-Pin DIP, SO-14  
7
Out B  
–In B  
+In B  
B
6
5
DFN-8 4mm x 4mm  
(top view)  
Thermal Pad  
on Bottom  
NC = No connection.  
8-Pin DIP, SO-8  
(Connect to V−)  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
Copyright © 1999-2005, Texas Instruments Incorporated  
www.ti.com  
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