1 Features
• Optimized for small-size, low-power, and low-cost
• >1MΩ Ultra-high input impedance
• Three gain options (G = 1, 0.50, and 0.25)
• Good precision for 8-bit to 12-bit systems
– CMRR: 87dB (typical)
– Gain error: ±0.01% (typical)
– Offset voltage: ±0.70mV (typical)
• Space saving 0.8mm2 X2SON package
• Bandwidth: 125kHz (typical)
• Drives 200pF with <20% overshoot (typical)
• Low quiescent current: 13.5μA (typical)
• Supply range: 1.7V (±0.85V) to 5.5V (±2.75V)
• Specified temperature range: –40°C to 125°C

2 Applications
• Battery cell formation and test equipment
• String inverter
• EV charging station power module
• Battery energy storage system
• Power tools
• Industrial AC-DC
• Wearable fitness and activity monitor

3 Description
INA500 is a difference amplifier with integrated opamp
and matched resistors that offers three gain
options. INA500A version offers gain option of 1, while
INA500B and INA500C versions offer gain options of
0.50 and 0.25 respectively.
These are voltage sensing INAs in difference amplifier
configuration with high input impedance of >1MΩ and
low quiescent current of 13.5μA. The device achieves
75dB of minimum CMRR and an accurate ±0.05% of
maximum gain error, along with 3.5mV of maximum
offset (referred to output) in G = 1 configuration. The
device can handle up to 27.5V (±13.75V) of input
common-mode voltage in G = 0.25 with 5.5V (±2.75V)
of supply voltage. The combination of specifications
noted above makes INA500 a great choice for a
variety of level translation and battery monitoring
applications.
The precision matched integrated resistors of INA500
saves BOM costs and board space by removing the
need for precise and low tolerance external resistors.
The INA500 can interface directly to low-speed, 8-bit
to 12-bit, analog-to-digital converters (ADC) and is an
excellent choice for replacing discrete implementation
of difference amplifiers built with commodity amplifiers
and discrete resistors. INA500 is offered in standard
6-pin packages such as SOT-23 and SC70 as well as
the space saving, X2SON package.