MAX4172 Maxim, MAX4172 Datasheet
MAX4172
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MAX4172 Summary of contents
Page 1
... To provide a high level of flexibility, the MAX4172 func- tions with an external sense resistor to set the range of load current to be monitored. It has a current output that ...
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... OUT Common-Mode ∆I / ∆V OUT Rejection Ratio 2 _______________________________________________________________________________________ Operating Temperature Range MAX4172E_A ....................................................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C Soldering Temperature (reflow) .......................................+260° unless otherwise noted. Typical values are +12V ...
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... Power-Off Input Leakage Current (RS+, RS-) OUT Rise Time OUT Fall Time OUT Settling Time to 1% OUT Output Resistance Note 1: 6.25mV = 1/16 of typical full-scale sense voltage (C/16). Note 2: Valid operation of the MAX4172 is guaranteed by design when PG is low. __________________________________________Typical Operating Characteristics (V+ = +12V 12V 1kΩ, T RS+ OUT SUPPLY CURRENT vs ...
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... GND POWER-SUPPLY REJECTION RATIO vs. FREQUENCY 100mV SENSE 0.5V P-P 15 1.0V P-P 10 5mV P 0.01 0 100 1000 POWER-SUPPLY FREQUENCY (kHz) V+ THRESHOLD FOR PG OUTPUT LOW vs. TEMPERATURE 2.95 2.90 2.85 2.80 V+ RISING VOLTAGE 2.75 2.70 2.65 2.60 V+ FALLING VOLTAGE 2.55 2.50 2.45 -40 - TEMPERATURE (°C) 0mV to 100mV V TRANSIENT RESPONSE SENSE MAX4172-09 10µs/div ...
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... OUT to ground will result in a voltage equal to 10V/V of sense voltage. Power Good Open-Collector Logic Output. A low level indicates that V+ is sufficient to power the PG 7 MAX4172, and adequate time has passed for power-on transients to settle out Supply Voltage Input for the MAX4172 ...
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... OUT is a high-impedance current source that can be integrated by connecting capacitive load. The PG output is an open-collector logic output that indicates the status of the MAX4172’s V+ power sup- ply. A logic low on the PG output indicates that V+ is sufficient to power the MAX4172. This level is tempera- ture dependent (see Typical Operating Characteristics graphs), and is typically 2 ...
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... INPUT O.3 in. COPPER can be significant. has a SENSE Figure 2. MAX4172 Connections Showing Use of PC Board Choose R obtain the full-scale voltage you require, given the full- scale I OUT ance permits using R minimal error. OUT’s load impedance (e.g., the input amp or ADC) must be much greater than R (e ...
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... OUT caused by these transients is a prob- lem, you can place a 1µF capacitor at the OUT pin to ground. You can also place a large capacitor at the RS terminal (or load side of the MAX4172) to decouple the load, reducing the current transients. These capacitors are not required for MAX4172 operation or stability. The RS+ and RS- inputs can be filtered by placing a capac- itor (e.g., 1µ ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. ...