OPA820-HT High Temp Unity-Gain Stable, Low Noise, Voltage-Feedback Operational Amplifier . | TI.com

OPA820-HT (ACTIVE)

High Temp Unity-Gain Stable, Low Noise, Voltage-Feedback Operational Amplifier .

 

Description

The OPA820 provides a wideband, unity-gain stable, voltage-feedback amplifier with a very low input noise voltage and high output current using a low 6.8-mA supply current. The OPA820 complements this high-speed operation with excellent DC precision in a low-power device. A worst-case input offset voltage of ±3.5 mV and an offset current of ±700 nA give excellent absolute DC precision for pulse amplifier applications.

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

The OPA820 is characterized for operation from –55°C to 210°C.

Features

  • High Bandwidth
    (240 MHz at 25°C and 100 MHz at 210°C, G = 2)
  • High Output Current
    (±110 mA at 25°C and 50 mA at 210°C)
  • Low Input Noise
    (2.5 nV/√Hz at 25°C and 4.5 nV/√Hzat 210°C)
  • Low Supply Current
    (5.6 mA at 25°C and 6.8 mA at 210°C)
  • Flexible Supply Voltage:
    • Dual ±2.5 V to ±5 V
    • Single +5 V

View more

Parametrics Compare all products in High-speed op amps (GBW>=50MHz)

 
Architecture
Number of channels (#)
Total Supply Voltage (Min) (+5V=5, +/-5V=10)
Total Supply Voltage (Max) (+5V=5, +/-5V=10)
BW @ Acl (MHz)
Acl, min spec gain (V/V)
Slew Rate (Typ) (V/us)
Vn at flatband (Typ) (nV/rtHz)
Vn at 1 kHz (Typ) (nV/rtHz)
Iq per channel (Typ) (mA)
Vos (offset voltage @ 25 C) (Max) (mV)
Rail-to-rail
Features
Rating
Operating temperature range (C)
CMRR (Typ) (dB)
Input bias current (Max) (pA)
Offset drift (Typ) (uV/C)
GBW (Typ) (MHz)
Output current (Typ) (mA)
2nd harmonic (dBc)
3rd harmonic (dBc)
@ MHz
OPA820-HT
Bipolar
Voltage FB    
1    
5    
12    
800    
1    
240    
2.5    
2.5    
5.6    
3.5    
No    
   
High Temp    
-55 to 210    
85    
16000000    
7    
800    
110    
85    
95    
1    

Design tool

WEBENCH® Designer OPA820-HT

Amplifier Topology
 Non-inverting
 Inverting
Desired Power Supply Voltage
Positive Supply (Vcc):  V
Negative Supply (Vee):  V
Allowed Power Supply(Vcc-Vee) = 5.0 to 12.0 V
Desired Input and Output Requirements
  Min Max
Vin  V  V
Vout  V  V
Minimum Temperature = -55.0 °C
Maximum Temperature = 210.0 °C