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Part: MAX4008
Category:
Analog & Mixed-Signal Processing
Description: MAX4007, MAX4008 High-Accuracy, 76V, High-side Current Monitors in SOT23
Company: Maxim Integrated Products
Datasheet: Download MAX4008 datasheet File size : 155 kB
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Datasheet text preview:
19-2743; Rev 1; 5/03
High-Accuracy, 76V, High-Side Current Monitors in SOT23
General Description
The MAX4007/MAX4008 precision, high-side, high-voltage current monitors are specifically designed for monitoring photodiode current in fiber applications. They offer a connection point for the reference current and a monitor output that produces a signal proportional to t h e reference current. The monitor output of the MAX4007 is a current proportional to the reference current. The monitor output of the MAX4008 is a voltage proportional to the reference current. The current monitors have six decades of dynamic range and monitor reference currents of 250nA to 2.5mA with better than 5% accuracy. The photodiode current can be monitored from 10nA to 10mA with reduced accuracy. T h e MAX4007/MAX4008 accept a supply voltage of +2.7V to +76V, suitable for APD or PIN photodiode applications. Internal current limiting (20mA, typ) protects the devices against short circuit to ground. A clamp diode protects the monitor output from overvoltage. Additionally, these devices feature thermal shutdown if the die temperature reaches +150°C. The MAX4007/MAX4008 are available in tiny, spacesaving 6-pin SOT23 packages, and operate over the extended temperature range of -40°C to +85°C.
Features
o Wide Reference Current Dynamic Range Guaranteed 250nA to 2.5mA with 5% Monitor Accuracy Extended 10nA to 10mA with 10% Monitor Accuracy o Current (MAX4007) or Voltage (MAX4008) Monitor Outputs o Reference Current-Limit Protection (20mA, typ) o Voltage Clamp Protects Subsequent Output Circuitry o +2.7V to +76V Wide Voltage Range Operation o 6-Pin SOT23 Packages
MAX4007/MAX4008
Ordering Information
PART TEMP RANGE PIN-PACKAGE 6 SOT23-6 6 SOT23-6 TOP MARK ABNM ABNO
Applications
Photodiode Current-Monitoring Systems Portable Instrumentation Medical Instrumentation Laboratory Instrumentation Consumer Electronics Current-to-Voltage Conversion Level Translation
MAX4007EUT-T -40°C to +85°C MAX4008EUT-T -40°C to +85°C
Pin Configuration Selector Guide
TOP VIEW
CLAMP 1 6 BIAS
PART MAX4007EUT-T MAX4008EUT-T
PINPACKAGE 6 SOT23-6 6 SOT23-6
INTERNAL TYPICAL RESISTOR ACCURACY (%) None 10k 5 1
GND 2
MAX4007 MAX4008
5
N.C.
OUT 3
4
REF
Typical Operating Circuit appears at end of data sheet.
SOT23
________________________________________________________________ Maxim Integrated Products
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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.
High-Accuracy, 76V, High-Side Current Monitors in SOT23 MAX4007/MAX4008
ABSOLUTE MAXIMUM RATINGS
CLAMP to GND ......-0.3V to +80V BIAS, REF to GND ........-0.3V to +80V 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
Stresses 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 = 40V, GND = 0V, REF = open, VOUT = 0V (MAX4007), CLAMP = open, -40°C to +85°C. Typical values are at TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETER Bias Voltage Range Bias Quiescent Current Reference Voltage Thermal Shutdown Engage Temperature Trip-Point Temperature Hysteresis Input Current Limit MAX4007 Output Current Noise SYMBOL V BIAS IB I A S V REF TSHDN THYS ILIM CONDITIONS Inferred from power-supply rejection test IREF = 250nA IREF = 2.5mA IREF = 2.5mA REF shorted to GND, junction temperature rising REF shorted to GND, junction temperature falling VREF = VBIAS - 5V f = 0.1Hz to 10Hz
i NOUT
MIN 2.7
TYP
MAX 76
UNITS V µA mA V °C °C mA
90 3.6 VBIAS - 1.1 VBIAS - 0.8 150 5 20 IREF = 250nA IREF = 2.5mA IREF = 250nA IREF = 2.5mA IREF = 250nA IREF = 2.5mA IREF = 250nA IREF = 2.5mA IREF = 250nA IREF = 2.5mA 0.3 63 9.2 1240 0.041 0.63 1.3 12.5 50 5 10 1 0 to VBIAS - 1.5 0 to VBIAS - 0.85 0.6
200 4
pARMS
f = 0.1Hz to 10kHz f = 0.1Hz to 10Hz MAX4008 Output Voltage Noise eNOUT f = 0.1Hz to 10kHz MAX4007 MAX4008 Output Leakage Output Voltage Range V OUT VOUT V CLAMP REF = open
µVRMS
G M k pA V
Output Resistance
ROUT
VBIAS = 2.7V to 76V, IREF = 0 to 1mA, MAX4007: IOUT/IOUT = ±1%, MAX4008: VOUT/IOUT = ±1%
Output Clamp Voltage
V
2
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High-Accuracy, 76V, High-Side Current Monitors in SOT23
ELECTRICAL CHARACTERISTICS (continued)
(VBIAS = 40V, GND = 0V, REF = open, VOUT = 0V (MAX4007), CLAMP = open, -40°C to +85°C. Typical values are at TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETER Output Clamp Leakage MAX4007 Current Gain IOUT/IREF SYMBOL CONDITIONS VCLAMP = 0 to 76V IREF = 250nA IREF = 2.5mA IREF = 10mA, VBIAS = 12V MAX4008 Transimpedance Gain IREF = 250nA VOUT/IREF (IOUT/IOUT) /VBIAS (VOUT/VOUT) /VBIAS IREF = 2.5mA IREF = 10mA, VBIAS = 12V Power-Supply Rejection Ratio (PSRR) IREF = 250nA MAX4007: VBIAS = 2.7V to 76V IREF = 1mA MAX4008: IREF = 1mA VBIAS = 2.7V to 76V IOUT settles within 0.1%, CIN = 10nF between REF and GND IREF = 250nA IREF = 2.5mA 0.9 0.95 0.09 0.094 MIN TYP 1 0.0999 0.095 0.0997 0.992 0.998 1.00 50 50 50 7.5 90 1000 1000 1000 ms µs ppm/V 1.1 1.05 V/mA 0.11 0.106 mA/mA MAX UNITS pA
MAX4007/MAX4008
Power-Up Settling Time
tS
Note 1: All devices are 100% tested at room temperature (TA = +25°C). All temperature limits are guaranteed by design.
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