OPA227 - High Precision, Low Noise Operational Amplifiers

Updated : 2020-01-09 14:19:00
Description

The OPAx22x series operational amplifiers combine low noise and wide bandwidth with high precision to make them the ideal choice for applications requiring both AC and precision DC performance.

The OPAx227 is unity-gain stable and features high slew rate (2.3V/µs) and wide bandwidth (8MHz). The OPAx228 is optimized for closed-loop gains of 5 or greater, and offers higher speed with a slew rate of 10V/µs and a bandwidth of 33MHz.

The OPAx227 and OPAx228 series operational amplifiers are ideal for professional audio equipment. In addition, low quiescent current and low cost make them ideal for portable applications requiring high precision.

The OPAx227 and OPAx228 series operational amplifiers are pin-for-pin replacements for the industry standard OP-27 and OP-37 with substantial improvements across the board. The dual and quad versions are available for space savings and per channel cost reduction.

The OPAx227, OPAx228, are available in DIP-8 and SO-8 packages. The OPA4227 and OPA4228 are available in DIP-14 and SO-14 packages with standard pin configurations. Operation is specified from –40°C to 85°C.

Products containing the "OPA227" keyword are: OPA2277 , OPA22777UA , OPA2277AIDRM , OPA2277AIDRMR , OPA2277AIDRMR , OPA2277AIDRMT , OPA2277AIDRMT , OPA2277AIDRMTG4 , OPA2277AIDRMTG4 , OPA2277MDTEP , OPA2277MDTEP , OPA2277P , OPA2277P , OPA2277P A , OPA2277PA , OPA2277PA , OPA2277PAG4 , OPA2277PG4 , OPA2277TDD1 , OPA2277TDD1
Features

  • Low Noise: 3nV/√Hz
  • Wide Bandwidth:
    • OPA227: 8 MHz, 2.3 V/µs
    • OPA228: 33 MHz, 10 V/µs
  • Settling Time: 5 µs
    (Significant Improvement Over OP-27)
  • High CMRR: 138 dB
  • High Open-loop Gain: 160 dB
  • Low Input Bias Current: 10 nA Maximum
  • Low Offset Voltage: 75 µV Maximum
  • Wide Supply Range: ±2.5 V to ±18 V
  • OPA227 Replaces OP-27, LT1007, MAX427
  • OPA228 Replaces OP-37, LT1037, MAX437
  • Single, Dual, and Quad Versions

Parametrics
StatusACTIVE
Number of channels1
Total Supply Voltage5
Vos (offset voltage @ 25 C)0.075
GBW8
Slew Rate2.3
Rail-to-railN/A
Offset drift0.1
Iq per channel3.7
Vn at 1 kHz3
CMRR138
RatingCatalog
Operating temperature range-40 to 85
Package GroupPDIP|8
Approx. price1.40 | 1ku
Package size: mm2:W x L (PKG)See datasheet (PDIP)
Input bias current10000
Output current45
FeaturesN/A
ArchitectureBipolar
Input common mode headroom (to negative supply)2.0
Input common mode headroom (to positive supply)-2.0
Output swing headroom (to negative supply)2.0
Output swing headroom (to positive supply)-2.0