AS1536 Datasheet | austriamicrosystems AG

Description The AS1536/AS1537 are low-power, 12-bit, 73ksps analog-to-digital (A/D) converters specifically designed for single-supply A/D applications. Superior AC characteristics, very low power consumption, and robust packaging make these ultra-small devices perfect for battery-powered analog-data collection devices. The integrated successive-approximation register (SAR) and a fast (1.5µs) sampling track/hold time provide an economic and highly-reliable A/D conversion solution. The AS1536/AS1537 operate from a single 2.7V to 5.25V supply. The AS1537 requires an external reference, using less power than the AS1536, however, the AS1536 features an internal 2.5V reference. As with the AS1537, the AS1536 can also be used with an external reference, which uses the input range 0V to VREF, including the positive supply range. The AS1537 consumes only 3m W (VDD = 3V) at the 73ksps maximum sampling speed. Both devices feature a low-current (0.3µA) shutdown mode, which reduces power consumption at slower throughput rates. Data accesses are made via the standard, high-speed 3-wire serial interface, which is SPI-, QSPI-, and Microwire-patible. Both devices contain an internal clock, however, both devices also support an external clock for increased flexibility. The AS1536/AS1537 are available in an 8-pin SOIC-150 package. 2 Key Features ! ! ! ! ! ! 12-Bit Resolution with 7.5µs Conversion Time Sampling Rate: 73ksps Straight Binary (Unipolar) Data Format Single-Supply Operation:+2.7V to +5.25V Internal 2.5V Reference (AS1536) Low Power-Consumption: - 4m W (73ksps, AS1536) - 3m W (73ksps, AS1537) - 66µW (1ksps, AS1537) - 1µW (Shutdown Mode) Integrated Track/Hold Amplifier Internal Clock SPI/QSPI/Microwire 3-Wire Serial Interface Operating Temperature Range: -40 to +85ºC 8-pin SOIC-150 Package ! ! ! ! ! 3 Applications The devices are ideal for remote sensors, data-acquisition, data logging devices, lab instruments, or for any other space-limited A/D devices with low power...