OPAx205 4-µV, 0.08-µV/°C, Low-Power, Super Beta, Bipolar, e-trim™ Op Amps

1 Features

• e-trim™ operational amplifier performance

– Low offset voltage: 25 µV (max),

15 µV (max, high grade)

– Low offset voltage drift: ±0.5 µV/°C (max),

±0.2 µV/°C (max, high grade)

• Super beta inputs

– Input bias current: 500 pA (max)

– Input current noise: 110 fA/√Hz

• Low noise

– 0.1 to 10-Hz: 0.2 µVPP

– Voltage noise: 7.2 nV/√Hz

• AOL, CMRR, and PSRR: > 126 dB (full

temperature range)

• Gain bandwidth product: 3.6 MHz

• Low quiescent current: 240 µA (max)

• Slew rate: 4 V/µs

• Overload power limiter

• Rail-to-rail output

• EMI and RFI filtered inputs

• Wide supply: 4.5 V to 36 V

• Temperature range: –40°C to +125°C

• Available in standard grade (OPAx205A) and

high grade (OPA2205, preview)

• Available with ±40-V overvoltage protection in the

OPA206 and OPA2206

2 Applications

• Flow transmitter

• String inverter

• Data acquisition (DAQ)

• Source measurement unit (SMU)

• Lab and field instrumentation

• Battery test

• Analog input module

• Pressure transmitter

3 Description

The OPA205, OPA2205, and OPA4205 (OPAx205)

are the next generation of the industry-standard

OPAx277 family. The OPA206 and OPA2206 are

related devices with the same op-amp core, but with

the added feature of input overvoltage protection

±40 V above the supplies. These devices are

precision, bipolar e-trim™ op amps with super-beta

inputs. TI's proprietary trimming technology is used to

achieve a typical input offset voltage of ±4 µV (±2 µV,

high grade), and a typical input offset voltage drift of

±0.08 µV (±0.04 µV, high grade).

Designed on a bipolar process, the OPAx205 provide

3.6

‑MHz gain bandwidth for a mere 220 µA of

quiescent current. The devices also achieve a low

voltage noise density of only 7.2 nV/√Hz at 1 kHz.

The super-beta inputs of the OPAx205 have a very

low input bias current of 100 pA (typical) and a current

noise density of 110 fA/√Hz.

The high performance of the OPAx205 makes these

devices an excellent choice for systems requiring

high precision and low power consumption, such

as flow and pressure transmitters, portable data

acquisition (DAQ) systems, and high-density source

measurement units (SMU).

Device Information

PART NUMBER

CHANNELS

PACKAGE(1)

OPA205

Single

D (SOIC, 8)

OPA2205(2)

Dual

D (SOIC, 8)

Dual

DGK (VSSOP, 8)

OPA4205

Quad

D (SOIC, 14)

Quad

PW (TSSOP, 14)

(1)

For all available packages, see the package option

addendum at the end of the data sheet.

(2)

High-grade version is preview (not Production Data).

Offset Voltage Drift (µV/°C)

0

3

6

9

12

15

-0.1 -0.08 -0.06 -0.04 -0.02

0

0.02 0.04 0.06 0.08

0.1

OPAx205 Offset Voltage Drift

+

±

+7 V

2.4 k

OPA2205

í7 V

+

±

+7 V

OPA2205

í7 V

2.4 k

+

±

+7 V

THP210

í7 V

1.1 nF

3 k

3 k

IN+

INí

470 pF

470 pF

750

750

100

100

1 nF

VOUT

OPA2205 Typical Application

OPA205, OPA2205, OPA4205

SBOS962F – APRIL 2020 – REVISED MARCH 2023

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. UNLESS OTHERWISE NOTED, this document contains PRODUCTION

DATA.