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THS1206DA Datasheet(PDF) 3 Page - Texas Instruments |
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THS1206DA Datasheet(HTML) 3 Page - Texas Instruments |
3 / 41 page THS1206 12-BIT 6 MSPS, SIMULTANEOUS SAMPLING ANALOG-TO-DIGITAL CONVERTERS SLAS217D – MAY 1999 – REVISED APRIL 2000 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Terminal Functions TERMINAL I/O DESCRIPTION NAME NO. I/O DESCRIPTION AINP 32 I Analog input, single-ended or positive input of differential channel A AINM 31 I Analog input, single-ended or negative input of differential channel A BINP 30 I Analog input, single-ended or positive input of differential channel B BINM 29 I Analog input, single-ended or negative input of differential channel B AVDD 23 I Analog supply voltage AGND 24 I Analog ground BVDD 7 I Digital supply voltage for buffer BGND 8 I Digital ground for buffer CONV_CLK (CONVST) 15 I Digital input. This input is used to apply an external conversion clock in continuous conversion mode. In single conversion mode, this input functions as the conversion start (CONVST) input. A high to low transition on this input holds simultaneously the selected analog input channels and initiates a single conversion of all selected analog inputs. CS0 22 I Chip select input (active low) CS1 21 I Chip select input (active high) DATA_AV 16 O Data available signal, which can be used to generate an interrupt for processors and as a level information of the internal FIFO. This signal can be configured to be active low or high and can be configured as a static level or pulse output. See Table 14. DGND 17 I Digital ground. Ground reference for digital circuitry. DVDD 18 I Digital supply voltage D0 – D9 1–6, 9–12 I/O/Z Digital input, output; D0 = LSB D10/RA0 13 I/O/Z Digital input, output. The data line D10 is also used as an address line (RA0) for the control register. This is required for writing to the control register 0 and control register 1. See Table 8. D11/RA1 14 I/O/Z Digital input, output (D11 = MSB). The data line D11 is also used as an address line (RA1) for the control register. This is required for writing to control register 0 and control register 1. See Table 8. REFIN 28 I Common-mode reference input for the analog input channels. It is recommended that this pin be connected to the reference output REFOUT. REFP 26 I Reference input, requires a bypass capacitor of 10 µF to AGND in order to bypass the internal reference voltage. An external reference voltage at this input can be applied. This option can be programmed through control register 0. See Table 9. REFM 25 I Reference input, requires a bypass capacitor of 10 µF to AGND in order to bypass the internal reference voltage. An external reference voltage at this input can be applied. This option can be programmed through control register 0. See Table 9. REFOUT 27 O Analog fixed reference output voltage of 2.5 V. Sink and source capability of 250 µA. The reference output requires a capacitor of 10 µF to AGND for filtering and stability. RD† 19 I The RD input is used only if the WR input is configured as a write only input. In this case, it is a digital input, active low as a data read select from the processor. See timing section. WR (R/W)† 20 I This input is programmable. It functions as a read-write input R/W and can also be configured as a write-only input WR, which is active low and used as data write select from the processor. In this case, the RD input is used as a read input from the processor. See timing section. † The start-conditions of RD and WR (R/W) are unknown. The first access to the ADC has to be a write access to initialize the ADC. |
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