OPA820 - Unity Gain Stable,Low Noise,Voltage Feedback Operational Amplifier

Updated : 2020-01-09 14:17:50
Description

The OPA820 device provides a wideband, unity-gain stable, voltage-feedback amplifier with a very-low input-noise voltage and high-output current using a low 5.6-mA supply current. At unity-gain, the OPA820 device gives more than 800-MHz bandwidth with less than 1-dB peaking. The OPA820 device complements this high-speed operation with excellent DC precision in a low-power device. A worst-case input-offset voltage of ±750 µV and an offset current of ±400 nA provide excellent absolute DC precision for pulse amplifier applications.

Minimal input and output voltage-swing headroom allow the OPA820 device to operate on a single 5-V supply with more than 2-VPP output swing. While not a rail-to-rail (RR) output, this swing supports most emerging analog-to-digital converter (ADC) input ranges with lower power and noise than typical RR output op amps.

Exceptionally low dG/dP (0.01% or 0.03°) supports low-cost composite-video line-driver applications. Existing designs can use the industry-standard pinout, 8-pin SOIC package while emerging high-density portable applications can use the 5-pin SOT-23. Offering the lowest thermal impedance of the industry in a SOT package, along with full specification over both the commercial and industrial temperature ranges, provides solid performance over a wide temperature range.

Products containing the "OPA820" keyword are: OPA820 , OPA820HD , OPA820ID , OPA820ID , OPA820IDB , OPA820IDBV , OPA820IDBVR , OPA820IDBVR , OPA820IDBVR(NSO) , OPA820IDBVRG4 , OPA820IDBVT , OPA820IDBVT , OPA820IDBVTG4 , OPA820IDBVTG4 , OPA820IDG4 , OPA820IDG4 , OPA820IDR , OPA820IDR , OPA820IDRG4 , OPA820IDRG4
Features

  • High Bandwidth (240 MHz, G = 2)
  • High-Output Current (±110 mA)
  • Low-Input Noise (2.5 nV/√Hz)
  • Low-Supply Current (5.6 mA)
  • Flexible Supply Voltage:
    • Dual ±2.5 V to ±6 V
    • Single 5 V to 12 V
  • Excellent DC Accuracy:
    • Maximum 25°C Input Offset Voltage = ±750 µV
    • Maximum 25°C Input Offset Current = ±400 nA

Parametrics
StatusACTIVE
ArchitectureBipolar^Voltage FB
Number of channels1
Total Supply Voltage12
BW @ Acl800
Acl, min spec gain1
Slew Rate240
Vn at flatband2.5
Vn at 1 kHz2.5
Iq per channel5.6
Vos (offset voltage @ 25 C)1.1
Rail-to-railNo
FeaturesN/A
RatingCatalog
Operating temperature range-40 to 85
Package GroupSOIC|8
Approx. price0.98 | 1ku
Package size: mm2:W x L (PKG)[pf]8SOIC[/pf]: 29 mm2: 6 x 4.9 (SOIC|8)
CMRR85
Input bias current16000000
Offset drift4
GBW800
Output current110
2nd harmonic85
3rd harmonic95
@ MHz1
Radiation, TID
Radiation, SEL