Refer to the PDF data sheet for device specific package drawings
The ADS7044 is a 1-MSPS, analog-to-digital converter (ADC). The device supports a wide analog input voltage range (±1.65 V to ±3.6 V) and includes a capacitor-based, successive-approximation register (SAR) ADC with an inherent sample-and-hold circuit. The SPI-compatible serial interface is controlled by the CS and SCLK signals. The input signal is sampled with the CS falling edge and SCLK is used for conversion and serial data output. The device supports a wide digital supply range (1.65 V to 3.6 V), enabling direct interface to a variety of host controllers. The device complies with the JESD8-7A standard for normal DVDD range (1.65 V to 1.95 V).
The device is available in 8-pin, miniature, leaded, and X2QFN packages and is specified for operation from –40°C to 125°C. Miniature form-factor and extremely low-power consumption make this device suitable for space-constrained, battery-powered applications.
PART NAME | PACKAGE | BODY SIZE (NOM) |
---|---|---|
ADS7044 | X2QFN (8) | 1.50 mm × 1.50 mm |
VSSOP (8) | 2.30 mm × 2.00 mm |
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Changes from C Revision (February 2015) to D Revision
Changes from B Revision (December 2014) to C Revision
Changes from A Revision (November 2014) to B Revision
Changes from * Revision (November 2014) to A Revision
PIN | I/O | DESCRIPTION | ||
---|---|---|---|---|
NAME | NO. | |||
RUG | DCU | |||
AINM | 8 | 5 | Analog input | Analog signal input, negative |
AINP | 7 | 6 | Analog input | Analog signal input, positive |
AVDD | 6 | 7 | Supply | Analog power-supply input, also provides the reference voltage to the ADC |
CS | 1 | 4 | Digital input | Chip-select signal, active low |
DVDD | 4 | 1 | Supply | Digital I/O supply voltage |
GND | 5 | 8 | Supply | Ground for power supply, all analog and digital signals are referred to this pin |
SCLK | 3 | 2 | Digital input | Serial clock |
SDO | 2 | 3 | Digital output | Serial data out |