MAX9922 Maxim, MAX9922 Datasheet
MAX9922
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MAX9922 Summary of contents
Page 1
... REF to GND. For bidirectional oper- ation, connect REF to V /2. DD The MAX9922 has adjustable gain set with two external resistors. The MAX9923T/MAX9923H/MAX9923F use an internal laser-trimmed resistor for fixed gain of 25V/V, 100V/V, and 250V/V, respectively. The devices operate from a +2.85V to +5.5V single supply, independent of the input common-mode voltage, and draw only 700µ ...
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... ELECTRICAL CHARACTERISTICS ( +12V +3.3V, V RSB RS+ RS- DD =100V/V (R1 = 1kΩ 99kΩ), SHDN = V = 0V, MAX9922 is set for A V are +25°C.) (Note 1) A PARAMETER SYMBOL DC CHARACTERISTICS Input Offset Voltage V OS (Notes 2, 3) ...
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... ELECTRICAL CHARACTERISTICS (continued +12V +3.3V, V RSB RS+ RS- DD =100V/V (R1 = 1kΩ 99kΩ), SHDN = V = 0V, MAX9922 is set for A V are +25°C.) (Note 1) A PARAMETER SYMBOL Gain Accuracy ∆A (Note 5) Gain Nonlinearity ~A Open-Loop Gain A VOL Input Bias Current RS+ FB Bias Current ...
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... Ultra-Precision, High-Side Current-Sense Amplifiers ELECTRICAL CHARACTERISTICS (continued +12V +3.3V, V RSB RS+ RS- DD =100V/V (R1 = 1kΩ 99kΩ), SHDN = V = 0V, MAX9922 is set for A V are +25°C.) (Note 1) A PARAMETER SYMBOL AC CHARACTERISTICS -3dB Small-Signal Bandwidth BW Slew Rate SR OUT Settling Time Final Value ...
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... MAX9923H/MAX9923F between the FB and REF pins, while in the MAX9922 the resistor is external and user selectable. A voltage identical to the V SENSE nitude and polarity of V SENSE bias current for REF is typically 1pA in the MAX9922 since it connects to the gate of a MOS transistor. See the External Reference section for more details. Note 7: The range ...
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... Ultra-Precision, High-Side Current-Sense Amplifiers (V = 3.3V SHDN DD DD RSB RS+ MAX9922 UNIPOLAR GAIN ACCURACY HISTOGRAM -0.5 -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 GAIN ACCURACY (%) INPUT REFERRED OFFSET vs. INPUT COMMON-MODE VOLTAGE INPUT COMMON MODE (V) GAIN ERROR vs. INPUT COMMON-MODE VOLTAGE ...
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... RSB CURRENT vs. TEMPERATURE V = 28V RSB V = 12V RSB V = 1.9V RSB -40 - TEMPERATURE (°C) MAX9922 GAIN vs. FREQUENCY GAIN = OPEN LOOP GAIN = 1000 1E+0 100E+0 10E+3 1E+6 100E-3 10E+0 1E+3 100E+3 FREQUENCY (Hz) PSRR vs. FREQUENCY 10E+0 100E+0 1E+3 10E+3 100E+3 FREQUENCY (Hz) 7 ...
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... INPUT NOISE DENSITY vs. FREQUENCY 250 200 150 100 50 32kHz SPIKE ENERGY 0 10 100 1,000 FREQUENCY (Hz) LARGE SIGNAL INPUT STEP RESPONSE (MAX9922, A INPUT (10mV/div) OUTPUT (1V/div) TIME (200µs/div) 8 _______________________________________________________________________________________ Typical Operating Characteristics (continued 12V +25°C, unless otherwise noted.) RS- A 1.25µV/div = 4.3µ ...
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... REF to GND for unidirectional operation. Gain-Set Feedback Input. Connect an optional noise reduction capacitor between OUT and FB. MAX9922: Adjustable Gain. Connect a resistive-divider feedback network between OUT, FB, and REF to set the 8 FB current-sense amplifier gain. Use an external combination of R1 and R2 resistors for gain = 1 + (R2/R1). ...
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... Measurements of OUT with respect to V voltage during charge and discharge cycles (Figure 1). The MAX9922 allows adjustable gain with a pair of exter- ) RS+ nal resistors between OUT, FB, and REF. The MAX9923T/ MAX9923H/MAX9923F use laser-trimmed internal resis- tors for fixed gains of 25, 100, and 250, respectively, with 0 ...
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... The output of the MAX9922/ MAX9923 allows for bipolar input differential signals. Gain accuracy is specified over the V ...
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... Take this into consideration when choosing the resistor value and its power dissipation (wattage) rating. The sense resistor’s value will drift allowed to heat up excessively. The precision V MAX9922/MAX9923 allows the use of small sense resis- tors to reduce power dissipation and reduce hot spots. 12 ______________________________________________________________________________________ ...
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BATT 1.9V TO 28V Chip Information PROCESS: BiCMOS ______________________________________________________________________________________ Ultra-Precision, High-Side Current-Sense Amplifiers V SENSE RS+ RS- BATT RSB 1.9V TO 28V 3. OUT MAX9923T MAX9923H FB MAX9923F ON SHDN REF GND OFF *OPTIONAL NOISE REDUCTION V SENSE ...
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... Current-Sense Amplifiers For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status ...
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... Updated conditions for REF input current and Note 6 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. ...