CSA250NCSOIC8
-
-6V to 80V, bidirectional, ultra-precision current sense amplifier with enhanced PWM suppression
Product details
-
Parameters
-
Characteristics
-
Package
-
Description
-
-
Supply voltage
2.7V-5.5V
-
Common-mode input voltage range
-6V-80V
-
Bandwidth
450kHz
-
Supports PWM suppression functionality
-
Gain
100
-
Current sensing direction
Bidirectional
-
Number of channels
1
-
-
-
• Enhanced PWM suppression
-
• Excellent CMRR
-
160dB DC CMRR (typ)
-
106dB AC CMRR at 50kHz (typ)
-
• Wide common-mode voltage range
−6V ~ 80V
-
• Accuracy
-
Gain:
-
• Gain error: 0.15% (max)
-
• Gain drift: 16ppm/°C (max)
-
Offset:
-
• Offset voltage: ±15μV (max)
-
• Offset drift: 340nV/°C (max)
-
• Available gain options
-
CSA250K: 10V/V
-
CSA250L: 20V/V
-
CSA250M: 50V/V
-
CSA250N: 100V/V
-
• Quiescent current
1.4mA (typ)
-
-
-
SOIC-8 4.9mm ×3.9mm
-
-
The CSA250 device is a current sense amplifier with voltage output. It features enhanced PWM suppression, allowing it to detect the voltage drop across a shunt resistor over a wide common-mode voltage range from -6V to 80V. The -6V common-mode voltage capability of the CSA250 enables the device to operate below ground potential. For example, in applications such as detecting the flyback period of a solenoid, enhanced PWM suppression provides high-level attenuation of large common-mode transients in systems controlled by PWM signals. This feature allows for precise current measurement without significant transients and associated recovery ripple on the output voltage.The device operates from a single supply voltage ranging from 2.7V to 5.5V, with a typical supply current of 1.4mA and a typical bandwidth of 450kHz. The CSA250 offers four fixed gain options: 10V/V, 20V/V, 50V/V, and 100V/V. Its zero-drift architecture enables low full-scale current sensing down to 10mV across the shunt (typical value). All versions are specified to operate over an extended temperature range of -40°C to 125°C and are available in SOIC-8, TSSOP-8, and MSOP-8 packages.
