ADC10D040 Datasheet | National Semiconductor

Description Features n n n n n n n n n Internal sample-and-hold Internal Reference Capability Dual gain settings Offset correction Selectable offset binary or 2’s plement output Multiplexed or parallel output bus Single +3.0V to 3.6V operation Power down and standby modes 3V TTL Logic input/output patible The ADC10D040 is a dual low power, high performance CMOS analog-to-digital converter that digitizes signals to 10 bits resolution at sampling rates up to 45 MSPS while consuming a typical 267 m W from a single 3.3V supply. No missing codes is guaranteed over the full operating temperature range. The unique two stage architecture achieves 9.4 Effective Bits over the entire Nyquist band at 40 MHz sample rate. An output formatting choice of offset binary or 2’s plement coding and a choice of two gain settings eases the interface to many systems. Also allowing great flexibility of use is a selectable 10-bit multiplexed or 20-bit parallel output mode. An offset correction feature minimizes the offset error. To ease interfacing to most low voltage systems, the digital output power pins of the ADC10D040 can be tied to a separate supply voltage of 1.5V to 3.6V, making the outputs patible with other low voltage systems. When not converting, power consumption can be reduced by pulling the PD (Power Down) pin high, placing the converter into a low power state where it typically consumes less than 1 m W and from which recovery is less than 1 ms. Bringing the STBY (Standby) pin high places the converter into a standby mode where power consumption is about 30 m W and from which recovery is 800 ns. The ADC10D040’s speed, resolution and single supply operation make it well suited for a variety of applications, including high speed portable applications. Operating over the industrial (- 40˚ ≤ TA ≤ +85˚C) temperature range, the ADC10D040 is available in a 48-pin TQFP. An evaluation board is available to ease the design effort. Key Specifications Resolution 10 Bits Conversion Rate 40...