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2.7-GHz, 13-V, decompensated 7-V/V, FET-input operational amplifier

Availability: 2,412


Package | PIN: WSON (DRG) | 8
Temp: Q (-40 to 125)
Package qty | Carrier: 250 | SMALL T&R
Qty Price
1-99 $9.24
100-249 $8.07
250-999 $6.22
1,000+ $5.57


  • High speed:
    • Gain-bandwidth product: 2.7GHz
    • Bandwidth (G = 7 V/V): 790 MHz
    • Large-signal bandwidth(2 VPP): 400 MHz
    • Slew rate: 1400 V/µs
  • Decompensated gain: 7-V/V stable
  • Low noise:
    • Input voltage noise: 2.2 nV/√Hz
    • Input current noise: 2.5 fA/√Hz (f = 10kHz)
  • Input bias current: 4 pA (typ)
  • Low input capacitance:
    • Common-mode: 1.9 pF
    • Differential mode: 0.5 pF
  • Low distortion (G = 7 V/V, RL = 1 kΩ, VO = 2 VPP):
    • HD2, HD3 at 1 MHz: –90 dBc, –96 dBc
    • HD2, HD3 at 50 MHz: –57 dBc, –72 dBc
  • Wide supply range: 6 V to 13 V
  • Output swing: 8 VPP (VS = 10 V)
  • Supply current: 27.7 mA
  • Shutdown supply current: 27 µA
  • Temperature range: –40°C to +85°C

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Texas Instruments  XOPA818IDRGT

The OPA818 is a decompensated (gain = 7 V/V stable), voltage-feedback operationalamplifier with a low-noise junction gate field-effect transistor (JFET) input stage that combineshigh gain-bandwidth with a wide supply range from 6 V to 13 V for high-speed and wide dynamic rangeapplications. This amplifier is manufactured using Texas Instruments’ proprietary, high-speed,silicon-germanium (SiGe) process to achieve significant performance improvements over otherhigh-speed, FET-input amplifiers. A fast slew rate (1400 V/µs) provides highlarge-signal bandwidth and low distortion.

The 2.7-GHz gain-bandwidth, low 2.4-pF total input capacitance, and 2.2nV/√Hz of noise makes the OPA818 an extremely versatile, wideband TIAphotodiode amplifier for use in optical test and communication equipment, and many medical,scientific, and industrial instruments. The OPA818 can achieve over 85-MHz signal bandwidth in TIAconfiguration with 20-kΩ TIA gain (RF) and 0.5-pF photodiode capacitance(CD) with wide output swings. The decompensated, low-noise architecture withpico amperes of input bias current is also well-suited for high-gain test and measurementapplications that have variable or high source impedance. Though normally stable in gains ≥ 7 V/V,the OPA818 can be used in applications with lower gains by applying noise-gain shapingtechniques.

The OPA818 is available in an 8-lead WSON package with an exposed thermal pad for heatdissipation. This device is specified to operate over the industrial temperature range of –40°C to+85°C.