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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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AS1536 데이터시트(PDF) 1 Page - ams AG |
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AS1536 데이터시트(HTML) 1 Page - ams AG |
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1 / 21 page  AS1536/AS1537 12-Bit, Single Supply, Low-Power, 73ksps A/D Con- verters Datash eet www.austriamicrosystems.com Revision 1.01 2 - 22 1 General Description The AS1536/AS1537 are low-power, 12-bit, 73ksps ana- log-to-digital (A/D) converters specifically designed for single-supply A/D applications. Superior AC characteris- tics, very low power consumption, and robust packaging make these ultra-small devices perfect for battery-pow- ered 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 refer- ence, 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 3mW (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-compatible. 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. Figure 1. Block Diagram 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: - 4mW (73ksps, AS1536) - 3mW (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-acquisi- tion, data logging devices, lab instruments, or for any other space-limited A/D devices with low power con- sumption and single-supply requirements. AS1536/AS1537 Control Logic Output Shift Register Internal Clock 12-Bit SAR Track/ Hold 2.5V Ref AS1536 only 12-Bit SAR 6 DOUT 5 GND 1 VDD 7 CSN 8 SCLK 3 SHDNN 2 AIN 4 REF |
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