®
AMERICAN MICROSYSTEMS, INC
OP021IS01
June, 1998 Preliminary AMI 0.8 micron CMOS
CWL Double Poly
1
SINGLE-STAGE OP AMP
FEATURES
• Small layout.
• Good for driving capacitive load
only.
DESCRIPTION
This is a simple single-stage folded-
cascode opamp capable of driving
capacitive loads up to 6pF with a GBW
of 21MHz. Gain is 76dB.
VIP
VOUT
AVDD
AVSS
IB25U
SUB
VIN
PIN DESCRIPTION
NAME TYPE DESCRIPTION
VIP Analog input OpAmp positive input
VIN Analog input OpAmp negative input
IB25U Analog input Bias current input (25uA±43%Sourcing)
VOUT Analog output OpAmp output
AVDD Analog supply +5V supply
AVSS Analog supply Ground
SUB Substrate Substrate
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER MIN MAX UNITS
VDD Supply Voltage 4.4 5.5 V
TTemperature -40 105 °C
CLOAD Load capacitance 6.0 pF
GAIN Gain 75.9 dB
GBW Gain bandwidth 21.4 MHz
PM Phase Margin 67.0 degrees
GM Gain margin 26.1 dB
VOS Offset voltage 5.0 mV
IDC DC current 461.5 uA
ICMR Input Common Mode Range 2.25 2.75 V
OPR Output Range 2.25 2.75 V
