The CMS24AD2304 utilizes a Sigma-Delta modulator and achieves PGA amplification through a low-noise instrumentation amplifier structure. With PGA set to 128, ODR at 10Hz, and VREF at 3.3V, the effective resolution can reach up to 20.6 bits. The CMS24AD2304 includes an internal RC oscillator, which can be configured for various functional modes via DRDYB/DOUT and SCLK, such as temperature detection, channel selection, PGA gain selection, and ADC data output rate selection.

> Integrated LDO supports shoot-through mode and can drive loads up to 20mA

> Optional input voltage shifter supports common-mode input voltages as low as -0.2V

> Supports 4 differential input pairs and 7 single-ended inputs

> Built-in oscillator with support for external clock input

> Integrated temperature sensor

> Includes sleep mode functionality

> 2-wire SPI interface with a maximum speed of 1.1MHz

> ADC features:

   - 24-bit no missing codes

   - PGA gain options: 1, 2, 4, 8, 16, 32, 64, 128, and 256.

   - Output data rate (ODR) options: 3.75Hz - 1.920KHz

   - With PGA=128, ODR=7.5Hz, and LDO output at 4.0V, the effective resolution is 21.1 bits with an equivalent input noise of 28nVrms

   - With PGA=128, ODR=7.5Hz, and LDO output at 2.4V, the effective resolution is 20.6 bits with an equivalent input noise of 24nVrms

>  Package type: SOP16