Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsPMICsPMIC - current control/management Current monitoring SOT 23 6

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°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

MAX4004/MAX4006

High-Accuracy, High-Side Current Monitors

in SOT23

________________________________________________________________ Maxim Integrated Products 1

GND

REFOUT

16BIAS

5 N.C.

CLAMP

MAX4004

MAX4006

SOT23

TOP VIEW

Pin Configuration

Ordering Information

19-2742; Rev 2; 2/06

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.

Typical Operating Circuit appears at end of data sheet.

PART

PIN-PACKAGE

TOP MARK

PKG

CODE

MAX4004EUT-T

6 SOT23-6 ABNL

U6S-3

MAX4006EUT-T

6 SOT23-6 ABNN

U6S-3

Selector Guide

PART

PIN-PACKAGE

INTERNAL

RESISTOR

TYPICAL

ACCURACY

MAX4004EUT-T

6 SOT23-6 None 5%

MAX4006EUT-T

6 SOT23-6 10kΩ 1%

Note: All devices are specified over the -40°C to +85°C operating

temperature range.

Summary of content (10 pages)

PAGE 1
9-2742; Rev 2; 2/06 High-Accuracy, High-Side Current Monitors in SOT23 The MAX4004/MAX4006 precision, high-side, 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 the reference current. The monitor output of the MAX4004 is a current proportional to the reference current.
PAGE 2
MAX4004/MAX4006 High-Accuracy, High-Side Current Monitors in SOT23 ABSOLUTE MAXIMUM RATINGS 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 ..........................................................
PAGE 3
High-Accuracy, High-Side Current Monitors in SOT23 (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) PARAMETER Output Clamp Voltage SYMBOL Output Clamp Leakage MAX4004 Current Gain CONDITIONS MIN VOUT VCLAMP VOUT/IREF 1 0.099 0.11 IREF = 2.5mA 0.094 0.095 0.106 0.9 0.995 1.1 IREF = 2.5mA 0.95 0.998 1.05 Power-Up Settling Time MAX4004: VBIAS = 2.
PAGE 4
Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) 1 IREF = 250nA 10 BIAS CURRENT (mA) VBIAS = 5V BIAS CURRENT (mA) IREF = 2.5mA MAX4004/6 toc02 10 MAX4004/6 toc01 10 1 0.1 0.01 8 14 26 20 100n 1µ 10µ 100µ 0.1 10m 1m -40 -15 IREF (A) VBIAS = 5V 4 3 60 GAIN ERROR vs. TEMPERATURE 1 0 -1 VBIAS = 5V IREF = 10nA 0.5 0 GAIN ERROR (%) 2 -0.5 -1.0 IREF = 250nA -1.5 IREF = 2.5µA -2.0 -2 -2.5 -3 -3.0 -4 -3.5 -5 IREF = 250µA IREF = 2.
PAGE 5
High-Accuracy, High-Side Current Monitors in SOT23 MAX4004/6 toc09 STARTUP DELAY (VBIAS = 5V, IREF = 2.5mA) MAX4004/6 toc08 STARTUP DELAY (VBIAS = 5V, IREF = 250nA) CH1 CH1 0V CH1 0V VBIAS BIAS D.U.T. REF OUT VBIAS CH1 BIAS D.U.T. REF OUT R1 CH2 CH2 R1 CH2 RREF 13pF CH2 RREF RTEST 13pF 0V RTEST 0V 40ms/div 4ms/div RREF = 1.68kΩ R1 = 0Ω RTEST = 14.0kΩ CH1: 2V/div CH2: 1V/div STARTUP DELAY (VBIAS = 2.
PAGE 6
Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) VOLTAGE DROP vs. REFERENCE CURRENT SHORT-CIRCUIT RESPONSE (VBIAS = 22V) TA = +120°C MAX4004/6 toc14 1.40 MAX4004/6 toc13 VBIAS = 2.7V 1.20 1.00 A B VBIAS - VREF (V) MAX4004/MAX4006 High-Accuracy, High-Side Current Monitors in SOT23 C CH1 0.80 A 0.60 B 0.40 0A C 0.
PAGE 7
High-Accuracy, High-Side Current Monitors in SOT23 BIAS BIAS MAX4004 MAX4006 CURRENT MONITOR 10x CURRENT MONITOR 10x 1x 1x CLAMP CLAMP OUT CURRENT CLAMP REF REF GND Detailed Description The MAX4004/MAX4006 are versatile current monitors intended for monitoring DC photodiode current in fiber applications (see the Functional Diagram). The MAX4004 output is a current that is exactly one-tenth of the reference current.
PAGE 8
MAX4004/MAX4006 High-Accuracy, High-Side Current Monitors in SOT23 In many fiber applications, OUT is connected directly to an ADC that operates from a supply voltage that is less than the voltage at BIAS. Connecting the MAX4004/MAX4006’s clamping diode output, CLAMP, to the ADC power supply helps avoid damage to the ADC. Without this protection, voltages can develop at OUT that can destroy the ADC.
PAGE 9
High-Accuracy, High-Side Current Monitors in SOT23 +2.7V TO +22V 2.2µH 0.22µF 0.
PAGE 10
Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) 6LSOT.EPS MAX4004/MAX4006 High-Accuracy, High-Side Current Monitors in SOT23 PACKAGE OUTLINE, SOT 6L BODY 21-0058 G 1 1 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.