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MAX4004EUT+T-MAX4006EUT -MAX4006EUT+T
High-Accuracy, High-Side Current Monitors in SOT23
General DescriptionThe MAX4004/MAX4006 precision, high-side, current
monitors are specifically designed for monitoring photo-
diode current in fiber applications. They offer a connection
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 propor-
tional to the reference current. The monitor output of the
MAX4006 is a voltage proportional to the reference cur-
rent. 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 sup-
ply 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.
The MAX4004/MAX4006 are available in tiny, space-
saving 6-pin SOT23 packages, and operate over the
extended temperature range of -40°C to +85°C.
Applications●Photodiode Current-Monitoring Systems●Portable Instrumentation●Medical Instrumentation●Laboratory Instrumentation●Consumer Electronics●Current-to-Voltage Conversion●Level Translation
Features●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 Packages
Typical Operating Circuit appears at end of data sheet.
Note: All devices are specified over the -40°C to +85°C operat-ing temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
PARTPIN-PACKAGETOP MARK
MAX4004EUT-T6 SOT23ABNL
MAX4004EUT+T6 SOT23—
MAX4006EUT-T6 SOT23ABNN
PARTPIN-PACKAGEINTERNAL
RESISTOR
TYPICAL
ACCURACYMAX4004EUT-T6 SOT23None5%
MAX4006EUT-T6 SOT2310kΩ1%
GND
REFOUT6BIASN.C.
CLAMP
MAX4004
MAX4006
SOT23TOP VIEW4
MAX4004/MAX4006High-Accuracy, High-Side Current Monitors
in SOT23
Pin Coniguration
Ordering Information
Selector Guide
CLAMP to GND .....................................................-0.3V to +25V
BIAS, REF to GND ................................................-0.3V to +25V
OUT to GND .......................................-0.3V to (VCLAMP + 0.6V)
Short-Circuit, REF to GND ........................................Continuous
Current into any Pin .........................................................±30mA
Continuous Power Dissipation (TA = +70°C)
6-Pin SOT23 (derate 8.7mW/°C above +70°C) ..........696mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
(VBIAS = 5V, GND = 0V, REF = Open, VOUT = 0V (MAX4004), CLAMP = Open, TA = -40°C to +85°C. Typical values are at TA = +25°C,
unless otherwise noted.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSBias Voltage RangeVBIASInferred from power-supply rejection test2.722V
Bias Quiescent CurrentIBIASIREF = 250nA40100µA
IREF = 2.5mA3.64mA
Reference VoltageVREFIREF = 2.5mAVBIAS - 1.1VBIAS - 0.8V
Thermal Shutdown
Engage TemperatureTSHDNREF shorted to GND, junction
temperature rising150°C
Trip-Point Temperature
HysteresisTHYSREF shorted to GND, junction
temperature falling5°C
Input Current LimitILIMVREF = VBIAS - 5V20mA
MAX4004
Output Current NoiseiNOUT
f = 0.1Hz to 10HzIREF = 250nA0.3
pARMSIREF = 2.5mA63
f = 0.1Hz to 10kHzIREF = 250nA9.2
IREF = 2.5mA1240
MAX4006
Output Voltage NoiseeNOUT
f = 0.1Hz to 10HzIREF = 250nA0.041
µVRMSIREF = 2.5mA0.63
f = 0.1Hz to 10kHzIREF = 250nA1.3
IREF = 2.5mA12.5
Output ResistanceROUTMAX4004IREF = 250nA50GΩ
IREF = 2.5mA5MΩ
MAX400610kΩ
Output LeakageREF = open1pA
Output Voltage RangeVOUT
VBIAS = 2.7V to 22V, IREF = 0 to 1mA,MAX4004: ΔIOUT/IOUT = ±1%,MAX4006: ΔIVOUT/IOUT = ±1%
0 to VBIAS
- 1.5
0 to VBIAS -
0.85V
MAX4004/MAX4006High-Accuracy, High-Side Current Monitors
in SOT23
Absolute Maximum RatingsStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics
(VBIAS = 5V, GND = 0V, REF = Open, VOUT = 0V (MAX4004), CLAMP = Open, TA = -40°C to +85°C. Typical values are at TA = +25°C,
unless otherwise noted.) (Note 1)
Note 1: All devices are 100% tested at room temperature (TA = +25°C). All temperature limits are guaranteed by design.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSOutput Clamp VoltageVOUT -
VCLAMP0.6V
Output Clamp LeakageVCLAMP = 0 to 22V1pA
MAX4004 Current GainIOUT/IREF
IREF = 250nA0.090.0990.11
mA/mAIREF = 2.5mA0.0940.0950.106
IREF = 10mA, VBIAS = 12V0.098
MAX4006
Transimpedance GainVOUT/IREF
IREF = 250nA0.90.9951.1
V/mAIREF = 2.5mA0.950.9981.05
IREF = 10mA, VBIAS = 12V0.992
Power-Supply
Rejection Ratio (PSRR)
(ΔIOUT/IOUT)/ΔVBIAS
MAX4004:
VBIAS = 2.7V to 22V
IREF = 250nA501000
ppm/VIREF = 1mA501000
(ΔVOUT/VOUT)/ΔVBIAS
MAX4006:
VBIAS = 2.7V to 22V IREF = 1mA501000
Power-Up Settling TimetS
IOUT settles within
0.1%, CIN = 10nF
between REF and GND
IREF = 250nA7.5ms
IREF = 2.5mA90µs
MAX4004/MAX4006High-Accuracy, High-Side Current Monitors
in SOT23
Electrical Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
BIAS CURRENT
vs. REFERENCE CURRENTMAX4004/6 toc02
IREF (A)
BIAS CURRENT (mA)100µ10µ1µ100n
10n10m
VBIAS = 5V
BIAS CURRENT
vs. TEMPERATUREMAX4004/6 toc03
TEMPERATURE (°C)
BIAS CURRENT (mA)3510-15
IREF = 250nA
IREF = 2.5mAVBIAS = 5V
GAIN ERROR
vs. REFERENCE CURRENTMAX4004/6 toc04
IREF (A)
GAIN ERROR (%)100µ10µ1µ100n
10n10m
VBIAS = 5V
GAIN ERROR vs. TEMPERATURE
MAX4004/6 toc05
TEMPERATURE (°C)
GAIN ERROR (%)
IREF = 10nA
IREF = 5mA
IREF = 2.5A
IREF = 250µA
IREF = 2.5µA
IREF = 250nA
VBIAS = 5V
GAIN ERROR
vs. BIAS VOLTAGE
MAX4004/6 toc06
GAIN ERROR (%)
IREF = 250nA
IREF = 25µA
IREF = 2.5mA
IREF = 5mA
BIAS CURRENT
vs. SUPPLY VOLTAGEMAX4004/6 toc01
SUPPLY VOLTAGE (V)
BIAS CURRENT (mA)148
IREF = 250nA
IREF = 2.5mA
TRANSIENT RESPONSE
(VBIAS = 5V)MAX4004/6 toc07
IOUT
0.1mA/div
IREF
1.0mA/div
MAX4004/MAX4006High-Accuracy, High-Side Current Monitors
in SOT23
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
40ms/div
STARTUP DELAY
(VBIAS = 5V, IREF = 250nA)CH1
MAX4004/6 toc08
CH2
RREF = 16.8MΩ
R1 = 118MΩ
RTEST = 1.67MΩ
CH1: 2V/div
CH2: 10mV/div
VBIAS
RTEST
RREF
BIAS
CH2
13pF
CH1
D.U.T.
REFOUT
4ms/div
STARTUP DELAY
(VBIAS = 5V, IREF = 2.5mA)CH1
MAX4004/6 toc09
CH2
RREF = 1.68kΩ
R1 = 0Ω
RTEST = 14.0kΩ
CH1: 2V/div
CH2: 1V/div
VBIAS
RTEST
RREF
BIAS
CH2
13pF
CH1
D.U.T.
REFOUT
10ms/div
STARTUP DELAY
(VBIAS = 2.7V, IREF = 250nA)CH1
MAX4004/6 toc10
CH2
RREF = 8.8MΩ
R1 = 0Ω
RTEST = 8.1MΩ
CH1: 1V/div
CH2: 50mV/div
VBIAS
RTEST
RREF
BIAS
CH2
13pF
CH1
D.U.T.
REFOUT
10ms/div
STARTUP DELAY
(VBIAS = 2.7V, IREF = 2.5mA)CH1
MAX4004/6 toc11
CH2
RREF = 794Ω
R1 = 0Ω
RTEST = 4.01kΩ
CH1: 1V/div
CH2: 200mV/div
VBIAS
RTEST
RREF
BIAS
CH2
13pF
CH1
D.U.T.
REFOUT
20ms/div
SHORT-CIRCUIT RESPONSE
(VBIAS = 5V)MAX4004/6 toc12
CH1
CH1: IBIAS, 10mA/div
A: REF SHORTS TO GND
B: CURRENT LIMIT ACTIVE
C: THERMAL SHUTDOWNB
TA = +148°C
MAX4004/MAX4006High-Accuracy, High-Side Current Monitors
in SOT23
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
PINNAMEFUNCTIONMAX4004MAX40061CLAMPClamp Voltage Input. External potential used for voltage
clamping of VOUT.2GNDGround—OUTCurrent-Monitor Output. OUT sources a current of 1/10th IREF.4REFReference Current Output. REF provides the source current to
the cathode of the photodiode. 5N.C.No Connection. Not internally connected.6BIASBias Voltage Input. Bias voltage for photodiode.3OUT
Current-Monitor Output. OUT presents a voltage proportional to
IREF at 1V/mA. An internal 10kΩ resistor connects OUT to GND
(see Functional Diagram).
10ms/div
SHORT-CIRCUIT RESPONSE
(VBIAS = 22V)MAX4004/6 toc13
CH1
CH1: IBIAS, 10mA/div
A: REF SHORTS TO GND
B: CURRENT LIMIT ACTIVE
C: THERMAL SHUTDOWNBC
TA = +120°C
VOLTAGE DROP
vs. REFERENCE CURRENTMAX4004/6 toc14
REFERENCE CURRENT (A)
BIAS
- V
REF
(V)100µ10µ1µ
100n10m
A: TA = -40°C
B: TA = +25°C
C: TA = +85°C
D: TA = +100°C
VBIAS = 2.7V
MAX4004/MAX4006High-Accuracy, High-Side Current Monitors
in SOT23
Typical Operating Characteristics (continued)
Pin Coniguration
