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.