Analog Microelectronics, Inc.
1
AME40
Micropower Voltage Reference Diode
n General Description
The AME40 is a micropower 2-terminal band-gap voltage
regulator diode. It operates over a 40µA to 20mA current
range. Each circuit is trimmed at wafer sort to provide a
±0.20% and ±0.50% initial tolerance. The design of the
AME40 allows for a large range of load capacitances and
operating currents. The low start-up current makes these
part ideal for battery applications.
Analog Microelectronics offers this part in a TO-92,
SO-8 packages as well as the space saving SOT-23.
n Key Features
l Small packages: SOT-23, TO-92, SO-8
l Tolerates capacitive loads
l Fixed reverse breakdown voltage of 2.5V
l Tight voltage tolerance ---------- ±0.20%, ±0.50%
l Wide operating current ---------- 40µA to 20mA
l Wide temperature range -------- -40
o
C to +85
o
C
l Low temperature coefficient --- 100ppm/
o
C (max)
l Excellent transient response
n Typical Application
n Applications
l Portable electronics
l Power supplies
l Computer peripherals
l Data acquisition systems
l Battery chargers
l Consumer electronics
n Functional Block Diagram
GND
VR
Bandgap
Cell
Current
Shunt
VS


VR
RS =
VS - VR
I
VR = 2.5V
1000pF
Value optional
RS
I