19-2742; Rev 0; 1/03
High-Accuracy, High-Side Current Monitors
in SOT23
General Description
The MAX4004/MAX4006 precision, high-side, current
monitors are specifically designed for monitoring photo-
diode current in fiber applications. They offer a connec-
tion point for the reference current and a monitor output
that produces a signal proportional to the reference
current. The monitor output of the MAX4004 is a current
proportional to the reference current. The monitor out-
put of the MAX4006 is a voltage proportional to the ref-
erence current. The current monitors have six decades
of dynamic range and monitor reference current of
250nA to 2.5mA with better than 5% accuracy. The
photodiode current can be monitored from 10nA to
10mA with reduced accuracy.
The MAX4004/MAX4006 accept a +2.7V to +22V supply
voltage, suitable for PIN photodiode applications. (For
higher voltage applications, refer to the MAX4007/
MAX4008 data sheet.) Internal current limiting (20mA,
typ) protects the device against short-circuit-to-ground or
excessive current conditions. A clamp diode protects the
monitor output from overvoltage. Additionally, these
devices feature thermal shutdown if the die temperature
reaches +150掳C.
The MAX4004/MAX4006 are available in tiny, space-
saving 6-pin SOT23 and 8-pin thin QFN packages, and
operate over the extended temperature range of -40掳C
to +85掳C.
Features
o
Wide Reference Current Dynamic Range
Guaranteed 250nA to 2.5mA with 5%
Accuracy
Extended 10nA to 10mA with 10% Monitor
Accuracy
o
Current (MAX4004) or Voltage (MAX4006) Monitor
Output
o
Reference Current-Limit Protection (20mA, typ)
o
Voltage Clamp Protects Subsequent Output
Circuitry
o
+2.7V to +22V Wide Voltage Range Operation
o
6-Pin SOT23 and 8-Pin Thin QFN Packages
MAX4004/MAX4006
Ordering Information
PART
MAX4004EUT-T
MAX4004ETA
MAX4006EUT-T
MAX4006ETA
TEMP RANGE
-40掳C to +85掳C
-40掳C to +85掳C
-40掳C to +85掳C
-40掳C to +85掳C
PIN-PACKAGE
6 SOT23-6
8 Thin QFN-EP*
6 SOT23-6
8 Thin QFN-EP*
TOP
MARK
ABNL
AGC
ABNN
AGE
Applications
Photodiode Current-Monitoring Systems
Portable Instrumentation
Medical Instrumentation
Laboratory Instrumentation
Consumer Electronics
Current-to-Voltage Conversion
Level Translation
*EP
= Exposed pad.
Pin Configurations
TOP VIEW
CLAMP
1
6
BIAS
Selector Guide
PART
MAX4004EUT-T
MAX4004ETA
MAX4006EUT-T
MAX4006ETA
PIN-PACKAGE
6 SOT23-6
8 Thin QFN
6 SOT23-6
8 Thin QFN
INTERNAL
TYPICAL
RESISTOR ACCURACY
None
None
10k鈩?/div>
10k鈩?/div>
5%
5%
1%
1%
GND
2
MAX4004
MAX4006
5
N.C.
OUT
3
4
REF
Typical Operating Circuit appears at end of data sheet.
SOT23
Pin Configurations continued at end of data sheet.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.
1
2
3
4
5
6
7
8
9
10
11
12
