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The AD7490BCPZ is a 12-bit, high-speed, low-power, 16-channel, successive-approximation ADC that operates from a single power supply with a supply voltage of 2.7 V to 5.25 V and a maximum throughput of 1 MSPS. The device has a built-in, low-noise, wide-bandwidth sample-and-hold amplifier that handles input frequencies above 1 MHz.

The conversion process and the data acquisition process are controlled via CS and a serial clock signal, thus setting the stage for easy interfacing of the device with a microprocessor or DSP. The input signal is sampled on the falling edge of CS and the conversion is initiated here at the same time. The device has no pipeline delay.

The AD7490BCPZ uses advanced design techniques to achieve very low power consumption at high throughput rates. At maximum throughput, the AD7490BCPZ consumes only 1.8 mA with a 3 V supply and 2.5 mA with a 5 V supply.

The analogue input range of the ADC is selectable between 0 V to REFIN inputs or 0 V to 2 × REFIN inputs by setting the relevant bit in the control register, and can be encoded in standard binary-style or binary-complementary outputs.The AD7490BCPZ has 16 single-ended analogue inputs with channel sequencers, and the order of the channel conversions can be selected by pre-programming. The conversion time depends on the SCLK frequency, which is also used as the master clock for conversion control.

Product Attributes (AD7490BCPZ)

Product Category: Analogue to Digital Converters - ADCs

Family: AD7490

Package / Case: LFCSP-32

Resolution: 12 bit

Number of Channels: 16 Channel

Interface Type: SPI

Sample Ratio: 1 MS/s

Input Type: Single-Ended

Architecture: SAR

SNR - Signal-to-Noise Ratio: 69.5 dB

Minimum operating temperature: - 40 C

Maximum operating temperature: + 85 C

DNL - Differential Nonlinearity: - 0.95 LSB/1.5 LSB

Gain error: +/- 2 LSB

Height: 0.83 mm

INL - Integral non-linearity: +/- 1 LSB

Input voltage: 2.5 V/5 V

Length: 5 mm

Humidity sensitivity: Yes

Number of ADC inputs: 16 Inputs

Number of Converters: 1 Converter

Operating supply voltage: 5 V

Pd-Power Dissipation: 12.5 mW

Reference Type: External

Sample and Hold: Yes

Supply Voltage - Max: 5 V

Supply Voltage - Min: 5 V

Type: S/H ADC

Applications (AD7490BCPZ)

Multi-channel system monitoring

Battery powered equipment

Power line monitoring

Data acquisition, instrumentation and process control

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