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Precision op amps (Vos<1mV)

OPA2205

ACTIVE

Dual, rail-to-rail bipolar precision e-trim™ op amp with low input bias current and low noise

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Data sheet

OPA2205

ACTIVE
Data sheet Order now

Product details

Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.5 Vos (offset voltage at 25°C) (max) (mV) 0.025 GBW (typ) (MHz) 3.6 Features EMI Hardened, Super Beta, e-Trim™ Slew rate (typ) (V/µs) 4 Rail-to-rail Out Offset drift (typ) (µV/°C) 0.04 Iq per channel (typ) (mA) 0.22 Vn at 1 kHz (typ) (nV√Hz) 7.2 CMRR (typ) (dB) 140 Rating Catalog Operating temperature range (°C) -40 to 125 Input bias current (max) (pA) 400 Iout (typ) (A) 0.025 Architecture Bipolar Input common mode headroom (to negative supply) (typ) (V) 1 Input common mode headroom (to positive supply) (typ) (V) -1.4 Output swing headroom (to negative supply) (typ) (V) 0.2 Output swing headroom (to positive supply) (typ) (V) 0.2 THD + N at 1 kHz (typ) (%) 0.0004
Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.5 Vos (offset voltage at 25°C) (max) (mV) 0.025 GBW (typ) (MHz) 3.6 Features EMI Hardened, Super Beta, e-Trim™ Slew rate (typ) (V/µs) 4 Rail-to-rail Out Offset drift (typ) (µV/°C) 0.04 Iq per channel (typ) (mA) 0.22 Vn at 1 kHz (typ) (nV√Hz) 7.2 CMRR (typ) (dB) 140 Rating Catalog Operating temperature range (°C) -40 to 125 Input bias current (max) (pA) 400 Iout (typ) (A) 0.025 Architecture Bipolar Input common mode headroom (to negative supply) (typ) (V) 1 Input common mode headroom (to positive supply) (typ) (V) -1.4 Output swing headroom (to negative supply) (typ) (V) 0.2 Output swing headroom (to positive supply) (typ) (V) 0.2 THD + N at 1 kHz (typ) (%) 0.0004
SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • 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 µV PP
    • Voltage noise: 7.2 nV/√ Hz
  • A OL, 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
  • 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 µV PP
    • Voltage noise: 7.2 nV/√ Hz
  • A OL, 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

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).

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).

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Technical documentation

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* Data sheet OPAx205 4-µV, 0.08-µV/°C, Low-Power, Super Beta, Bipolar, e-trim™ Op Amps datasheet (Rev. F) PDF | HTML 29 Mar 2023
Technical article How to improve efficiency and precision with bipolar op amps PDF | HTML 23 Jun 2021
Application brief Offset Correction Methods: Laser Trim, e-Trim, and Chopper (Rev. C) PDF | HTML 13 Apr 2021
Application note High-Voltage Signal Conditioning for Low-Voltage ADCs (Rev. B) PDF | HTML 18 May 2015
Application note Precision Absolute Value Circuits 02 Oct 2000

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