OPA2211A - 1.1nV/rtHz Noise, Low Power, Precision Operational Amplifier

Updated : 2020-01-09 14:18:37
Description

The OPAx211 series of precision operational amplifiers achieves very low1.1-nV/√Hz noise density with a supply current of only 3.6 mA. This seriesalso offers rail-to-rail output swing, which maximizes dynamic range.

The extremely low voltage and low current noise, high-speed, and wide output swing of theOPAx211 series make these devices an excellent choice as a loop filter amplifier in PLLapplications.

In precision data acquisition applications, the OPAx211 series of operational amplifiersprovides 700-ns settling time to 16-bit accuracy throughout 10-V output swings. This acperformance, combined with only 125 µV of offset and 0.35 µV/°C of drift over temperature, makesthe OPAx211 series suitable for driving high-precision 16-bit analog-to-digital converters (ADCs)or buffering the output of high-resolution digital-to-analog converters (DACs).

The OPAx211 series is specified over a wide dual-power supply range of ±2.25 to ±18 V, orfor single-supply operation from 4.5 to 36 V.

The OPA211 is available in the small SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8 packages. Adual version (OPA2211) is available in a SON-8 (3 mm × 3 mm) or an SO-8PowerPAD™ package. This series of operationalamplifiers is specified from TA = –40°C to +125°C.

Products containing the "OPA2211A" keyword are: OPA2211A , OPA2211AIDDA , OPA2211AIDDA , OPA2211AIDDAR , OPA2211AIDDAR , OPA2211AIDRGR , OPA2211AIDRGR , OPA2211AIDRGR/OPA211IDRG , OPA2211AIDRGT , OPA2211AIDRGT
Features

  • Low Voltage Noise: 1.1 nV/√Hz at 1 kHz
  • Input Voltage Noise: 80 nVPP (0.1 to 10 Hz)
  • THD + N: –136 dB (G = 1, ƒ = 1 kHz)
  • Offset Voltage: 125 µV (Maximum)
  • Offset Voltage Drift: 0.35 µV/°C (Typical)
  • Low Supply Current: 3.6 mA/Ch (Typical)
  • Unity-Gain Stable
  • Gain Bandwidth Product:
    • 80 MHz (G = 100)
    • 45 MHz (G = 1)
  • Slew Rate: 27 V/µs
  • 16-Bit Settling: 700 ns
  • Wide Supply Range:
    • ±2.25 to ±18 V, 4.5 V to 36 V
  • Rail-to-Rail Output
  • Output Current: 30 mA
  • SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8

All trademarks are the property of their respective owners.

Parametrics
StatusACTIVE
Number of channels2
Total Supply Voltage4.5
Vos (offset voltage @ 25 C)0.15
GBW45
Slew Rate27
Rail-to-railOut
Offset drift0.35
Iq per channel3.6
Vn at 1 kHz1.1
CMRR120
RatingCatalog
Operating temperature range-40 to 125
Package GroupSO PowerPAD|8
Approx. price5.20 | 1ku
Package size: mm2:W x L (PKG)[pf]8SO PowerPAD[/pf]: 19 mm2: 3.9 x 4.89 (SO PowerPAD|8)
Input bias current175000
Output current30
FeaturesShutdown^Small Size
ArchitectureBipolar
Input common mode headroom (to negative supply)1.8
Input common mode headroom (to positive supply)-1.4
Output swing headroom (to negative supply)0.2
Output swing headroom (to positive supply)-0.2