Simultaneous Sampling ADCs
19-4250; Rev 0; 8/08
www.DataSheet4U.com
4-Channel, 16-Bit, Simultaneous-Sampling ADCs with PGA, Filter, and 8-/12-Bit...
Description
19-4250; Rev 0; 8/08
www.DataSheet4U.com
4-Channel, 16-Bit, Simultaneous-Sampling ADCs with PGA, Filter, and 8-/12-Bit Dual-Stage DAC
General Description
The MAX11043 features 4 single-ended or differential channels of simultaneous-sampling ADCs with 16-bit resolution. The MAX11043 contains a versatile filter block and programmable-gain amplifier (PGA) per channel. The filter consists of seven cascaded 2ndorder filter sections for each channel, allowing the construction of a 14th-order filter. The filter coefficients are user-programmable. Configure each 2nd-order filter as lowpass (LP), highpass (HP), or bandpass (BP) with optional rectification. Gain and phase mismatch of the analog signal path is better than -50dB. The ADC can sample up to 800ksps per channel. A 40MHz serial interface provides communication to and from the device. The SPIā¢ interface provides throughput of 1600ksps; 4 channels at 400ksps per channel or 2 channels at 800ksps per channel. A software-selectable scan mode allows reading the ADC results while simultaneously updating the DAC. Other features of the MAX11043 include an internal (+2.5V) or external (+2.0V to +2.8V) reference, power-saving modes, and a PGA with gains of 1 to 64. The PGA includes an equalizer (EQ) function that automatically boosts lowamplitude, high-frequency signals for applications such as CW-chirp radar. The MAX11043 includes two 8-bit coarse DACs that set the high and low references for a second-stage 12-bit fine DAC, typically...
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