Wolfson Microelectronics plc WM0838
WM0834/8 is via Data In (DI) and Data Out (DO) wires under the control of clock and chip select inputs. This is followed by the results LSB first, indicated by the falling edge of SARS. WM0834, WM0838 Production Data Sept 1996 Rev 2.0 8-Bit ADCs with Serial Interface and Configurable Input Multiplexer Description WM0834 and WM0838 are 8-bit analogue to digital converters (ADC) with configurable 4-input and 8-input multiplexers respectively and a serial I/O interface.FEATURES
● Functionally Equivalent to National Semiconductor ADC0834 and ADC0838 without the Internal Zener Regulator Network 4-input (WM0834) or 8-input (WM0838) MUX options Reference input operates ratiometrically or with a fixed reference Input range 0 to Vcc with Vcc Reference 5V and 3.3V variants Total Unadjusted Error: ± 1 LSB 8-bit resolution Low Power 32 µs conversion time at fclock = 250 kHz Serial I/O interface WM0834 packages: 14 pin SO & DIP WM0838 packages: 20 pin wide-body SO & DIP●
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APPLICATIONS
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● Embedding with remote sensors Equipment health monitoring Automotive Industrial control Block Diagram CS CLK DI VREF CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7 COM AGND 1 Internal CS Input Latch Mux Select Start Conv Vcc Comparator WM0834 4 Inputs Input MUX DAC & SAR Logic Control Logic SE 2 SARS WM0838 8 Inputs Output Shift Register DO DGND WM0834/8 Notes: 1. Internally tied to AGND for WM0834 2. Not available on WM0834 Production Data data sheets contain final specifications current on publication date.