OPA205, OPA2205, OPA4205
SBOS962F – APRIL 2020 – REVISED MARCH 2023
OPAx205 4-µV, 0.08-µV/°C, Low-Power, Super Beta, Bipolar, e-trim™ Op Amps
1 Features
3 Description
•
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
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).
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– 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
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.
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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
2 Applications
PART NUMBER
OPA205
CHANNELS
PACKAGE(1)
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•
•
•
•
•
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Flow transmitter
String inverter
Single
D (SOIC, 8)
Dual
Dual
Quad
Quad
D (SOIC, 8)
OPA2205(2)
Data acquisition (DAQ)
Source measurement unit (SMU)
Lab and field instrumentation
Battery test
Analog input module
Pressure transmitter
DGK (VSSOP, 8)
D (SOIC, 14)
OPA4205
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).
750 ꢀ
15
12
9
470 pF
+7 V
3 kꢀ
œ
2.4 kꢀ
IN+
+
OPA2205
Þ7 V
100 ꢀ
100 ꢀ
+7 V
œ
1.1 nF
1 nF
VOUT
+
6
THP210
Þ7 V
+7 V
2.4 kꢀ
3 kꢀ
œ
INÞ
+
470 pF
3
OPA2205
Þ7 V
750 ꢀ
0
-0.1 -0.08 -0.06 -0.04 -0.02
0
0.02 0.04 0.06 0.08 0.1
Offset Voltage Drift (µV/°C)
OPA2205 Typical Application
OPAx205 Offset Voltage Drift
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.
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