The TSA7887 – an alternate source for the AD7887 – is a self-contained, 2-channel, high-speed, micropower, 12-bit analog-to-digital converter (ADC) that operates from a single +2.7V to +5.25V power supply. The TSA7887 is capable of 125-ksps throughput rate with an external 2MHz serial clock and draws 0.85mA supply current.
The wideband input track-and-hold acquires signals in 500ns and features a single-ended sampling topology. Output data coding is straight binary and the ADC is capable of converting full power signals of up to 2.5 MHz. The ADC also contains an integrated 2.5V reference or the VREF pin can be overdriven by an external reference.
The TSA7887’s provides one or two analog inputs each with an analog input range from 0 to VREF. In two-channel operation, the analog input range is 0V to VDD. Efficient circuit design ensures low power consumption of 2mW (typical) for normal operation and 3μW in power-down operation.
The TSA7887 is fully specified from -40ºC to +125ºC and is available in 8-pin SOIC and MSOP packages.
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