MAX9934TAUA+ by Analog Devices

High-Precision, Low-Voltage, Current-Sense Amplifier with Current Output and Chip Select for Multiplexing

Status: Active
Series: MAX9934
RoHS: Unknown
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The MAX9934 high-precision, low-voltage, high-side current-sense amplifier is ideal for both bidirectional (charge/discharge) and unidirectional current measurements in battery-powered portable and laptop devices. Input offset voltage (VOS) is a low 10µV (max) at +25°C across the -0.1V to 5.5V input common-mode voltage range, and is independent of VCC. Its precision input specification allows the use of very small sense-voltages (typically ±10mV full-scale) for minimally invasive current sensing. The output of the MAX9934 is a current proportional to input VSENSE and is available in either 25µA/mV or 5µA/mV gain options (GM) with gain accuracy better than 0.25% (max) at +25°C. A chip select (CS) allows multiplexing of several MAX9934 current outputs to a single microcontroller ADC channel (see the Typical Operating Circuit). CS is compatible with 1.8V and 3.3V logic systems. The MAX9934 is designed to operate from a 2.5V to 3.6V VCC supply, and draws just 120µA (typ) quiescent current. When powered down (VCC = 0V), RS+ and RS- draw less than 0.1nA (typ) leakage current to reduce battery load. The MAX9934 is robust and protected from input faults of up to ±6V input differential voltage between RS+ and RS-. The MAX9934 is specified for operation over the -40°C to +125°C temperature range and is available in 8-pin µMAX® or a 6-bump UCSP™ (1mm x 1.5mm x 0.6mm), making it ideal for space-sensitive applications.

Prices starting from US$2.18


Distributor Starting From Stock
Logo for Newark Electronics Newark Electronics US$2.84
793
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Logo for element14 element14 US$2.50
793
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Features

Input Offset Voltage: 10µV (max)
Gain Error Less than 0.25%
-0.1V to +5.5V Input Common-Mode Voltage Range
Chip Select Allows Multiplexing Several MAX9934 Current Monitors to One ADC
Current Output Allows ROUT Selection for Gain Flexibility
Single Supply Operation: 2.5V to 3.6V
Two Gain Options: GM of 25µA/mV (MAX9934T) and 5µA/mV (MAX9934F)
Bidirectional or Unidirectional Operation
Small, 6-Bump UCSP (1mm x 1.5mm x 0.6mm) and 8-Pin µMAX Packages

Specifications

VSENSE_FS (mV) (recomm.) 525
VOS @25°C (µV) (max) 10
Output Format Current
CMVR (V) (min) -0.1
CMVR (V) (max) 5.5
VCC (V) (min) 2.5
VCC (V) (max) 3.6
ICC (µA) (typ) 120
Bi-Dir. Curr. Sense Yes
Gain 25 µA/mV5 µA/mV
Gain Accuracy @25°C (%) (max) 0.25
Oper. Temp. (°C) -40 to +125
Package/Pins UMAX/8
BudgetaryPrice (See Notes) 1.3


MAX9934TAUA+ Amplifiers & Comparators by Analog Devices

CURRENT SENSE AMP 1.5KHZ UMAX-8

Status: Unknown
Series: -
RoHS: Unknown
View Datasheet Manufacturer Site View Pricing & Stock

Specifications

No. of Amplifiers 1 Amplifier, 1Amplifiers
Input Bias Current 100pA
Amplifier Case Style µMAX
No. of Pins 8Pins
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Bandwidth 1.5kHz
Supply Voltage Min 2.5V
Supply Voltage Max 3.6V
Input Offset Voltage 14µV
CMRR 135dB
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Current Sense Amp, 1.5Khz, Umax-8 | Newark Electronics
CURRENT SENSE AMP, 1.5KHZ, UMAX-8 | element14

Frequently Asked Questions

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This part has not been flagged as RoHS Compliant.

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