OPC02

LV Operational Amplifier
for Floating Systems

 

Functional Description

OPC02 is an internally compensated operational amplifier with a PMOS input stage and external biasing. The amplifier is designed for universal applications.

This cell uses isolated transistors. Therefore it can be used in floating systems.

The operational amplifier has a powerdown mode to permit very low standby currents. This mode is controlled by the complementary signals "PD" and "XPD". PD = High (VDDA) and XPD = Low (VSSA) -> OUT = High (VDDA).
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Key Features

  • Floating Supply Voltages
  • Power Supply: VDDA-VSSA = 5V
  • Analog Ground:
    VSSA = 0...20V
  • Power down mode
  • Compensated
  • External biasing


    • Height: 190 µm
    Width: 260 µm
    Area: 50 000 µm²

Pin List

PinDescriptionCapacitance
INP Non Inverting Input 0.5pF
INN Inverting Input 0.5pF
PD Power Down 0.05pF
XPD Power Down Not 0.05pF
OUT Analog Output -
VDDA Power Supply -
VSSA Analog Ground -
IBP Bias Source Input -
Substrate Not Connected to VSSA -

 

Electrical Parameters

Conditions:
  • VSSA=0V
  • Bias Source Current IBP=5µA -Typical
Parameter Symbol Min Typ Max Unit
Power Supply Range  Vdda 4.50 5.00 5.50 V
Temperature Range  Temp  -40 25 85 deg 
AC Parameters   
Open Loop Gain  A0  98 100 101 dB 
Unity Gain Bandwidth (1.00 pF / 10.0 MOhm)
Phase Margin		 BW 2.11 3.07 4.05 MHz
Øm 66.1 66.8 67.5 deg
Unity Gain Bandwidth (10.0 pF / 1.00 GOhm)
Phase Margin		 BW 1.89 2.79 3.67 MHz
Øm 45.0 46.2 47.3 deg
Common Mode Rejection Ratio  CMRR 67 70 73 dB
Power Supply Rejection Ratio Vdd PSRRvdd 90 91 92 dB
Power Supply Rejection Ratio Vss PSRRvss 67 70 73 dB
Output Resistance (closed loop) Rout 3.75 5.02 8.43 Ohm
DC Parameters   
Input Offset Voltage  Vos -5   +5 mV
Power Supply Current  Idd 37.9 55.4 75.7 µA
Power Consumption  PVdd 0.17 0.28 0.42 mW
Output Source Current Isource 0.08 0.13 0.17 mA
Output Sink Current Isink 3.91 5.98 7.71 mA
Common Mode Input Range CMIR(L) 0.35 0.38 0.38 V
Vdda - CMIR(H) 0.66 0.78 0.83 V
Output Range (Rl = 10.0 MOhm) Vout(L) 3.18 3.82 5.01 mV
Vdda - Vout(H) 45.8 55.8 75.7 mV
Transient Parameters   
Slew Rate - Rise SRP 1.66 2.47 3.43 V/µs
Slew Rate - Fall SRN 1.77 2.60 3.57 V/µs
Settling Time - Rise  TSP  0.72 0.96 1.42 µs
Settling Time - Fall  TSN  0.59 0.79 1.31 µs
Startup Time  Tstart  1.00 1.27 1.76 µs
Total Harmonic Distortion  THD  - 60 - 60 - 62 dB
Noise Parameters   
Equivalent Input Noise @10Hz  EN(10Hz) - 0.51 - µV/sqrt(Hz)
Equivalent Input Noise @100KHz  EN(100Hz) - 25.7 - nV/sqrt(Hz)
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