Skip to main content

OPA365

Operational Amplifier

The OPA365 is a operational amplifier from Texas Instruments. View the full OPA365 datasheet below including key specifications, pinout, electrical characteristics, absolute maximum ratings.

Manufacturer

Texas Instruments

Category

Operational Amplifier

Package

SOT-23 (5), SOIC (8)

Key Specifications

ParameterValue
Slew Rate25 V/µs
Input Bias Current0.2 pA
Input Offset Voltage100 µV
Supply Voltage Range2.2V to 5.5V
Gain Bandwidth Product50 MHz
Common Mode Rejection Ratio100 dB (minimum)
Input Voltage Noise Density4.5 nV/√Hz at 100 kHz
Operating Temperature Range-40°C to +125°C
Settling Time To 0 01 Percent
Quiescent Current Per Amplifier4.6 mA
Total Harmonic Distortion Plus Noise0.0004%

Overview

Part: OPAx365 — Texas Instruments

Type: Operational Amplifier

Description: The OPAx365 series are 50-MHz, zerø-crossover, low-distortion, high CMRR, rail-to-rail input/output CMOS operational amplifiers optimized for very low voltage, single-supply applications.

Operating Conditions:

  • Supply voltage: 2.2–5.5 V
  • Operating temperature: -40 to +125 °C (specified temperature)

Absolute Maximum Ratings:

  • Max supply voltage: 5.5 V
  • Max signal input current: 10 mA
  • Max junction temperature: 150 °C
  • Max storage temperature: 150 °C

Key Specs:

  • Gain Bandwidth Product (GBW): 50 MHz (VS = 5 V)
  • Input Offset Voltage (VOS): 100 μV (typ), 200 μV (max)
  • Input Bias Current (IB): ±0.2 pA (typ), ±10 pA (max)
  • Slew Rate (SR): 25 V/μs (VS = 5 V, G = 1)
  • Common-Mode Rejection Ratio (CMRR): 100 dB (min), 120 dB (typ)
  • Total Harmonic Distortion + Noise (THD+N): 0.0004% (VS = 5 V, RL = 600 Ω, VO = 4 VPP, G = 1, f = 1 kHz)
  • Input Voltage Noise Density (en): 4.5 nV/√Hz (f = 100 kHz)
  • Quiescent Current per amplifier (IQ): 4.6 mA (typ), 5 mA (max) (IO = 0 mA)

Features:

  • Zerø-Crossover Distortion Topology
  • Rail-to-Rail Input and Output
  • Input 100 mV Beyond Supply Rail
  • Low Noise: 4.5 nV/√Hz
  • Fast Settling: 0.3 μs to 0.01%
  • Low Offset: 100 μV
  • Low Input Bias Current: 0.2 pA

Applications:

  • Signal Conditioning
  • Data Acquisition
  • Process Control
  • Active Filters
  • Test Equipment
  • Audio
  • Wideband Amplifiers
  • Cell Phone Power Amplifier Control Loops

Package:

  • SOIC (8 pins)
  • SOT-23 (5 pins)

Features

  • 1 · Gain Bandwidth: 50 MHz

  • Zerø-Crossover Distortion Topology:

  • -Excellent THD+N: 0.0004%

  • -CMRR: 100 dB (Minimum)

  • -Rail-to-Rail Input and Output

  • -Input 100 mV Beyond Supply Rail

  • Low Noise: 4.5 nV/ √ Hz at 100 kHz

  • Slew Rate: 25 V/μs

  • Fast Settling: 0.3 μ s to 0.01%

  • Precision:

  • 2.2-V to 5.5-V Operation

  • Low Offset: 100 μV

  • Low Input Bias Current: 0.2 pA

Applications

  • Signal Conditioning
  • Data Acquisition
  • Process Control
  • Active Filters
  • Test Equipment
  • Audio
  • Wideband Amplifiers

1

Pin Configuration

PinNameTypeDescription
1NC–No internal connection (can be left floating)
2-ININegative (inverting) input
3+INIPositive (noninverting) input
4V-–Negative (lowest) power supply
5NC–No internal connection (can be left floating)
6VOUTOOutput
7V+–Positive (highest) power supply
8NC–No internal connection (can be left floating)

Electrical Characteristics

At TA = 25°C, RL = 10 k Ω connected to VS/2, VCM = VS/2, and VOUT = VS/2, unless otherwise noted.

PARAMETERPARAMETERPARAMETERTEST CONDITIONSMINTYPMAXUNIT
OFFSET VOLTAGEOFFSET VOLTAGEOFFSET VOLTAGEOFFSET VOLTAGEOFFSET VOLTAGEOFFSET VOLTAGEOFFSET VOLTAGEOFFSET VOLTAGE
V OSInput offset voltageInput offset voltage100200μV
dV OS /dTInput offset voltage versus driftInput offset voltage versus driftAt T A = - 40°C to +125°C1μV/°C
PSRRInput offset voltage versus power supplyInput offset voltage versus power supplyV S = 2.2 V to 5.5 V, at T A = - 40°C to +125°C10μV/V
Channel separation, DCChannel separation, DC0.2μV/V
INPUT BIAS CURRENTINPUT BIAS CURRENTINPUT BIAS CURRENTINPUT BIAS CURRENTINPUT BIAS CURRENTINPUT BIAS CURRENT
±0.2		INPUT BIAS CURRENT
±10		INPUT BIAS CURRENT
pA
I BInput bias current Over temperatureInput bias current Over temperatureAt T A = - 40°C to +125°CSee Typical CharacteristicsSee Typical CharacteristicsSee Typical CharacteristicsSee Typical Characteristics
I OSInput offset currentInput offset current±0.2±10pA
NOISENOISENOISENOISENOISENOISENOISENOISE
e nInput voltage noiseInput voltage noisef = 0.1 Hz to 10 Hz5μV PP
e nInput voltage noise densityInput voltage noise densityf = 100 kHz4.5nV/ √ Hz
i nInput current noise densityInput current noise densityf = 10 kHz4fA/ √ Hz
INPUT VOLTAGE RANGEINPUT VOLTAGE RANGEINPUT VOLTAGE RANGEINPUT VOLTAGE RANGEINPUT VOLTAGE RANGEINPUT VOLTAGE RANGEINPUT VOLTAGE RANGEINPUT VOLTAGE RANGE
V CMCommon-mode voltage rangeCommon-mode voltage range(V-) - 0.1(V+) + 0.1V
CMRRCommon-mode rejection ratioCommon-mode rejection ratio(V - ) - 0.1 V ≤ V CM ≤ (V+) + 0.1 V, at T A = - 40°C to +125°C100120dB
INPUT CAPACITANCEINPUT CAPACITANCEINPUT CAPACITANCEINPUT CAPACITANCEINPUT CAPACITANCEINPUT CAPACITANCEINPUT CAPACITANCEINPUT CAPACITANCE
DifferentialDifferentialDifferential6pF
Common-modeCommon-mode2pF
OPEN-LOOP GAINOPEN-LOOP GAINOPEN-LOOP GAINOPEN-LOOP GAINOPEN-LOOP GAINOPEN-LOOP GAINOPEN-LOOP GAINOPEN-LOOP GAIN
A OLR L = 10 k Ω , 100 mV < V O < (V+) - 100 mV, at T A = - 40°C to +125°C100120dB
A OLOpen-loop voltage gainOpen-loop voltage gainR L = 600 Ω , 200 mV < V O < (V+) - 200 mV100120dB
A OLR L = 600 Ω , 200 mV < V O < (V+) - 200 mV, at T A = - 40°C to +125°C94dB
FREQUENCY RESPONSEFREQUENCY RESPONSEFREQUENCY RESPONSEFREQUENCY RESPONSEFREQUENCY RESPONSEFREQUENCY RESPONSEFREQUENCY RESPONSEFREQUENCY RESPONSE
GBWGain-bandwidth productGain-bandwidth productV S = 5 V50MHz
SRSlew rateSlew rateV S = 5 V , G = 125V/μs
t0.1%V S = 5 V , 4-V step, G = +1200ns
SSettling time0.01%V S = 5 V, 4-V step, G = +1300ns

Absolute Maximum Ratings

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

MINMAXUNIT
VoltageSupply voltage5.5V
VoltageSignal input terminals, voltage (2)-0.50.5V
Signal input terminals, current (2)-1010mA
Output short-circuit (3)ContinuousContinuous
Operating, T A-40150°C
Junction, T J150°C
Storage, T stg-65150°C

Recommended Operating Conditions

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

MINNOMMAXUNIT
Power supply voltage, (V+) - (V-)2.25.5V
Specified temperature- 40125°C
Operating temperature- 40150°C

Thermal Information

OPA365OPA365
THERMAL METRIC(1)DBV (SOT-23)D (SOIC)
5 PINS8 PINS
R θ JAJunction-to-ambient thermal resistance206.9140.1
R θ JC(top)Junction-to-case (top) thermal resistance69.489.8
R θ JBJunction-to-board thermal resistance34.280.6
ψ JTJunction-to-top characterization parameter1.828.7
ψ JBJunction-to-board characterization parameter33.980.1
R θ JC(bot)Junction-to-case (bottom) thermal resistancen/an/a

Typical Application

Figure 27. Microphone Preamplifier

Ordering Information

MPNPackageTemperature RangePacking
OPA365SOT-23 (5)-40°C to +125°Cnull
OPA365SOIC (8)-40°C to +125°Cnull
OPA2365SOIC (8)-40°C to +125°Cnull

Related Variants

The following components are covered by the same datasheet.

Part NumberManufacturerPackage
OPA2365Texas InstrumentsSOIC (8)
OPA365-EPTexas Instruments—
OPA365-Q1Texas Instruments—
OPA365AIDTexas Instruments8-SOIC (0.154", 3.90mm Width)
OPA365AIDG4Texas Instruments8-SOIC (0.154", 3.90mm Width)
OPA365AIDRTexas Instruments8-SOIC (0.154", 3.90mm Width)
OPAX365Texas Instruments—
Data on this page is extracted from publicly available manufacturer datasheets using automated tools including AI. It may contain errors or omissions. Always verify specifications against the official manufacturer datasheet before making design or purchasing decisions. See our Terms of Service. Rights holders can submit a takedown request.

Get structured datasheet data via API

Get started free