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DAC5686IPZPG4 Datasheet(PDF) 5 Page - Texas Instruments |
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DAC5686IPZPG4 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 53 page DEVICE INFORMATION DAC5686 www.ti.com ............................................................................................................................................................ SLWS147F – APRIL 2003 – REVISED JUNE 2009 Terminal Functions TERMINAL I/O DESCRIPTION NAME NO. AGND 1, 4, 7, 9, I Analog ground return 12, 17, 19, 22, 25 AVDD 2, 3, 8, 10, I Analog supply voltage 14, 16, 18, 23, 24 BIASJ 13 I/O Full-scale output current bias CLK1 59 I External clock input; data clock input CLK1C 60 I Complementary external clock input; data clock input CLK2 62 I External clock input; sample clock for the DAC (optional if PLL disabled) CLK2C 63 I Complementary external clock input; sample clock for the DAC (optional if PLL disabled) CLKGND 58, 64 Ground return for internal clock buffer CLKVDD 61 Internal clock buffer supply voltage DA[15:0] 34–36, I A-channel data bits 0 through 15 39–43, DA15 is most significant data bit (MSB). 48–55 DA0 is least significant data bit (LSB). Internal pulldown DB[15:0] 92–90, I B-channel data bits 0 through 15 87–83, DB15 is most significant data bit (MSB). 78–71 DB0 is least significant data bit (LSB). Internal pulldown Note: The order of the B data bus can be reversed by register rev_bbus. DGND 27, 38, 45, Digital ground return 57, 69, 81, 88, 93, 99 DVDD 26, 32, 37, Digital supply voltage 44, 56, 68, 82, 89, 100 EXTIO 11 I Used as external reference input when internal reference is disabled (i.e., EXTLO connected to AVDD). Used as internal reference output when EXTLO = AGND, requires a 0.1- µF decoupling capacitor to AGND when used as reference output EXTLO 15 I Internal reference ground. Connect to AVDD to disable the internal reference IOUTA1 21 O A-channel DAC current output. Full scale when all input bits are set to 1 IOUTA2 20 O A-channel DAC complementary current output. Full scale when all input bits are set to 0 IOUTB1 5 O B-channel DAC current output. Full scale when all input bits are set to 1 IOUTB2 6 O B-channel DAC complementary current output. Full scale when all input bits are set to 0 IOGND 47, 79 Digital I/O ground return IOVDD 46, 80 Digital I/O supply voltage LPF 66 I/O PLL loop filter connection. Can be left open or connected to GND if PLL is not used (PLLVDD = 0 V). PHSTR 94 I The PHSTR pin has two functions. When the sync_phstr register is 0, a high on the PHSTR pin resets the NCO phase accumulator. When the sync_phstr register is 1, a PHSTR pin low-to-high transition sets the divided clock phase in external clock mode, and a high on the PHSTR pin resets the NCO phase accumulator. Internal pulldown PLLGND 65 Ground return for internal PLL PLLVDD 67 PLL supply voltage. When PLLVDD is 0 V, the PLL is disabled. PLLLOCK 70 O PLL lock status bit. In PLL clock mode, PLLLOCK is high when PLL is locked to the input clock. In external clock mode, PLLLOCK outputs the input rate clock. QFLAG 98 I Used in the interleaved data input mode: When the qflag register bit is 1, the QFLAG pin is used as an input to identify the interleaved data sequence. QFLAG high identifies the data as channel B. Pin can be left open when not used. Internal pulldown RESETB 95 I Resets the chip when low. Internal pullup SCLK 29 I Serial interface clock. Internal pulldown SDENB 28 I Active-low serial data enable, always an input to the DAC5686. Internal pulldown Copyright © 2003–2009, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s): DAC5686 |
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