19-2742; Rev 0; 1/03
High-Accuracy, High-Side Current Monitors
in SOT23
General Description
Features
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.
ꢀ Wide Reference Current Dynamic Range
Guaranteed 250nA to 2.5mA with 5%
Accuracy
Extended 10nA to 10mA with 10% Monitor
Accuracy
ꢀ Current (MAX4004) or Voltage (MAX4006) Monitor
Output
ꢀ Reference Current-Limit Protection (20mA, typ)
ꢀ Voltage Clamp Protects Subsequent Output
Circuitry
ꢀ +2.7V to +22V Wide Voltage Range Operation
ꢀ 6-Pin SOT23 and 8-Pin Thin QFN Packages
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°C.
Ordering Information
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°C
to +85°C.
TOP
MARK
PART
TEMP RANGE PIN-PACKAGE
MAX4004EUT-T -40°C to +85°C 6 SOT23-6
MAX4004ETA -40 C to +85°C 8 Thin QFN-EP*
MAX4006EUT-T -40°C to +85°C 6 SOT23-6
ABNL
AGC
Applications
ABNN
AGE
Photodiode Current-Monitoring Systems
Portable Instrumentation
Medical Instrumentation
Laboratory Instrumentation
Consumer Electronics
MAX4006ETA
-40°C to +85°C 8 Thin QFN-EP*
*EP = Exposed pad.
Current-to-Voltage Conversion
Level Translation
Pin Configurations
TOP VIEW
Selector Guide
CLAMP
1
2
3
6
5
4
BIAS
N.C.
REF
INTERNAL
RESISTOR ACCURACY
TYPICAL
PART
PIN-PACKAGE
MAX4004
MAX4006
MAX4004EUT-T
MAX4004ETA
MAX4006EUT-T
MAX4006ETA
6 SOT23-6
8 Thin QFN
6 SOT23-6
8 Thin QFN
None
None
10k
5%
5%
1%
1%
GND
OUT
10k
SOT23
Typical Operating Circuit appears at end of data sheet.
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’s website at www.maxim-ic.com.