AS4040
Precision Micropower 2.5V Shunt Voltage Reference
FEATURES
APPLICATIONS
• Constant Current Source
• Digital Voltmeter
• Low temperature coefficient 100 ppm/°C
• Operating current range 100µA to 15 mA
• Low power, 250 mW @ Iin=100 mA
• Two terminal "Zener" operation
• Small package: SOT - 23, TO-92, and SO-8
• Fixed reverse breakdown voltage 2.5 Volt
• No output capacitance required
• Power Supply Monitor
• Precision Regulators
• Battery-Powered Equipment
• Instrumentation
• Automotive Electronics
• Data Acquisition Systems
• Energy Management
• Similar replacement for LM4040
PRODUCT DESCRIPTION
The AS4040 is a two-terminal, temperature compensated, band-gap voltage reference, which provides a fixed 2.5V output for input
currents between 100 µA to 15mA. The bandgap voltage (2.5V) is independently trimmed from the output voltage to achieve a very
low tempco. This trimming technique process gives a very stable device over the full temperature range (A grade 50 ppm/ °C). The
AS4040 is available in the sub-miniature (3mm × 1.3mm) SOT-23, SO-8 surface mount package, or TO-92 package. The operating
temperature is -40°C to 85°C.
The AS4040 advanced design eliminates the need for an external stabilized capacitor while insuring stability with any capacitive load,
making them easy to use.
ORDERING INFORMATION
Reverse Breakdown Voltage
Temperature Coef.
Output Accuracy
Part Number
AS4041YN-X
AS4041YS-X
AS4041YM-X
Package Type
TO-92
1=0.5%
2=1%
SO-8
SOT-23
Y=
2.5 = 2.5V
V=
A=100ppm/°C
B=150ppm/°C
X=
5.0 = 5.0V
Note: Consult factory for lower tempco and tolerance.
PIN CONNECTIONS
TO-92 (N)
8-Pin Surface Mount (S)
SOT-23-3 (M)
3
1
2
2
8
N/C
1
2
3
+
+
-
1
7
6
5
N/C
N/C
N/C
N/C
N/C
Bottom View
3
-
4
Top View
Top View
Rev. 10/11/00
SIPEX [ SIPEX CORPORATION ]
