Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Op-amp Multi-purpose SOIC 14

High Precision

OPERATIONAL AMPLIFIERS

OPA277

OPA2277

OPA4277

SBOS079A – MARCH 1999 – REVISED APRIL 2005

www.ti.com

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.

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.

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.

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.

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.

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

from –55°C to +125°C.

FEATURES

● 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

● WIDE SUPPLY RANGE: ±2V to ±18V

● LOW QUIESCENT CURRENT: 800µA/amplifier

● SINGLE, DUAL, AND QUAD VERSIONS

● REPLACES OP-07, OP-77, OP-177

Out D

–In D

+In D

V–

+In C

–In C

Out C

Out A

–In A

+In A

V+

+In B

–In B

Out B

OPA4277

14-Pin DIP, SO-14

V+

Out B

–In B

+In B

Out A

–In A

+In A

V–

OPA2277

8-Pin DIP, SO-8

APPLICATIONS

● TRANSDUCER AMPLIFIER

● BRIDGE AMPLIFIER

● TEMPERATURE MEASUREMENTS

● STRAIN GAGE AMPLIFIER

● PRECISION INTEGRATOR

● BATTERY POWERED INSTRUMENTS

● TEST EQUIPMENT

Offset Trim

V+

Output

Offset Trim

–In

+In

V–

OPA277

8-Pin DIP, SO-8

Offset Trim

−In

+In

V−

Offset Trim

Pin 1

Indicator

OPA277AIDRM

DFN-8 4mm x 4mm

(top view)

V+

Output

Thermal Pad

on Bottom

(Connect to V−)

Out A

−In A

+In A

V−

Out B

Pin 1

Indicator

OPA2277AIDRM

DFN-8 4mm x 4mm

(top view)

V+

−In B

Thermal Pad

on Bottom

(Connect to V−)

+In B

OPA277

OPA2277

OPA4277

NC = No connection.

Summary of content (27 pages)

PAGE 1
OPA OPA 277 227 OPA277 OPA2277 OPA4277 OPA 4277 7 OPA2 277 OPA2 77 OPA4 277 OPA2 77 OPA2 277 SBOS079A – MARCH 1999 – REVISED APRIL 2005 High Precision OPERATIONAL AMPLIFIERS FEATURES DESCRIPTION ● ULTRA LOW OFFSET VOLTAGE: 10µV ● ULTRA LOW DRIFT: ±0.
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ABSOLUTE MAXIMUM RATINGS(1) ELECTROSTATIC DISCHARGE SENSITIVITY Supply Voltage .................................................................................... 36V Input Voltage ..................................................... (V–) –0.7V to (V+) +0.7V Output Short-Circuit(2) .............................................................. Continuous Operating Temperature .................................................. –55°C to +125°C Storage Temperature ..........................................
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ELECTRICAL CHARACTERISTICS: VS = ±5V to VS = ±15V At TA = +25°C, and RL = 2kΩ, unless otherwise noted. Boldface limits apply over the specified temperature range, –40°C to +85°C.
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ELECTRICAL CHARACTERISTICS: VS = ±5V to VS = ±15V (CONT) At TA = +25°C, and RL = 2kΩ, unless otherwise noted. Boldface limits apply over the specified temperature range, –40°C to +85°C. OPA277PA, UA OPA2277PA, UA OPA4277PA, UA OPA277P, U OPA2277P, U PARAMETER CONDITION OUTPUT Voltage Output TA = –40°C to +85°C TA = –40°C to +85°C Short-Circuit Current Capacitive Load Drive VO (V–) (V–) (V–) (V–) +0.5 +0.5 +1.5 +1.5 IQ (V+) (V+) (V+) (V+) ±5 ±2 VS MAX –1.2 –1.2 –1.5 –1.
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TYPICAL CHARACTERISTICS At TA = +25°C, VS = ±15V, and RL = 2kΩ, unless otherwise noted. POWER SUPPLY AND COMMON-MODE REJECTION vs FREQUENCY OPEN-LOOP GAIN/PHASE vs FREQUENCY 140 140 0 100 –30 80 –60 φ 60 –90 40 –120 20 –150 0 –180 120 +PSR –PSR PSR, CMR (dB) AOL (dB) 120 CL = 0 CL = 1500pF Phase (°) G 100 80 CMR 60 40 20 0 –20 0.1 1 10 100 1k 10k 100k 1M 0.
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TYPICAL CHARACTERISTICS (CONT) At TA = +25°C, VS = ±15V, and RL = 2kΩ, unless otherwise noted. OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION OFFSET VOLTAGE PRODUCTION DISTRIBUTION 16 12 Typical distribution of packaged units. Single, dual, and quad included. 30 Percent of Amplifiers (%) 10 8 6 4 25 20 15 10 5 2 0 0 –50–45–40–35–30–25–20–15–10 –5 0 5 10 15 20 25 30 35 40 45 50 Offset Voltage (µV) 0 0.1 160 2 150 AOL, CMR, PSR (dB) Offset Voltage Change (µV) 0.4 0.5 0.6 0.7 0.8 0.9 1.
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TYPICAL CHARACTERISTICS (CONT) At TA = +25°C, VS = ±15V, and RL = 2kΩ, unless otherwise noted. CHANGE IN INPUT BIAS CURRENT vs POWER SUPPLY VOLTAGE CHANGE IN INPUT BIAS CURRENT vs COMMON-MODE VOLTAGE 2.0 2.0 Curve shows normalized change in bias current with respect to VS = ±10V (+20V). Typical IB may range from –0.5nA to +0.5nA at VS = ±10V. 1.5 1.0 1.0 VS = ±5V ∆IB (nA) ∆IB (nA) 0.5 0.0 Curve shows normalized change in bias current with respect to VCM = 0V. Typical IB may range from –05.
PAGE 8
TYPICAL CHARACTERISTICS (CONT) At TA = +25°C, VS = ±15V, and RL = 2kΩ, unless otherwise noted.
PAGE 9
APPLICATIONS INFORMATION The OPA277 series is unity-gain stable and free from unexpected output phase reversal, making it easy to use in a wide range of applications. Applications with noisy or high impedance power supplies may require decoupling capacitors close to the device pins. In most cases 0.1µF capacitors are adequate. connecting a potentiometer as shown in Figure 1. This adjustment should be used only to null the offset of the op amp.
PAGE 10
V+ 1/2 OPA2277 VOUT = (V1 – V2)(1 + R2 R1 ) R2 V– R–∆R Load Cell V1 R+∆R V+ R+∆R V2 R1 1/2 OPA2277 R–∆R V– R2 R1 For integrated solution see: INA126, INA2126 (dual) INA125 (on-board reference) INA122 (single-supply) FIGURE 3. Load Cell Amplifier.
PAGE 11
DFN PACKAGE LAYOUT GUIDELINES The OPA277 series uses the 8-lead DFN (also known as SON), which is a QFN package with contacts on only two sides of the package bottom. This leadless, near-chip-scale package maximizes board space and enhances thermal and electrical characteristics through an exposed pad. The leadframe die pad should be soldered to a thermal pad on the PCB. Mechanical drawings located at the end of this data sheet list the physical dimensions for the package and pad.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 18-Oct-2013 (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line.
PAGE 16
PACKAGE MATERIALS INFORMATION www.ti.com 9-Sep-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant OPA2277AIDRMT VSON DRM 8 250 180.0 12.4 4.25 4.25 1.15 8.0 12.0 Q2 OPA2277U/2K5 SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 OPA2277UA/2K5 SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.
PAGE 17
PACKAGE MATERIALS INFORMATION www.ti.com 9-Sep-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) OPA2277AIDRMT VSON DRM OPA2277U/2K5 SOIC D 8 250 210.0 185.0 35.0 8 2500 367.0 367.0 35.0 OPA2277UA/2K5 SOIC D 8 2500 367.0 367.0 35.0 OPA277AIDRMR VSON DRM 8 3000 367.0 367.0 35.0 OPA277AIDRMT VSON DRM 8 250 210.0 185.0 35.0 OPA277U/2K5 SOIC D 8 2500 367.0 367.0 35.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.