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DAC38RF80 Datasheet(PDF) 9 Page - Texas Instruments |
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DAC38RF80 Datasheet(HTML) 9 Page - Texas Instruments |
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9 / 152 page  9 DAC38RF80, DAC38RF83, DAC38RF84 DAC38RF85, DAC38RF90, DAC38RF93 www.ti.com SLASEA3 – DECEMBER 2016 Product Folder Links: DAC38RF80 DAC38RF83 DAC38RF84 DAC38RF85 DAC38RF90 DAC38RF93 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Pin Functions - DAC38RF80,DAC38RF90,DAC38RF84 (continued) PIN I/O DESCRIPTION NAME NO. SYNC1- C6 O Synchronization request to transmitter for JESD204B link 1, LVDS negative output. SYSREF+ A3 I LVPECL SYSREF positive input. This positive/negative pair is captured with the rising edge of DACCLKP/N. It is used for multiple DAC synchronization. SYSREF- A4 I LVPECL SYSREF negative input. (See the SYSREF description) TCLK K4 I JTAG test clock. TDI H4 I JTAG test data in. TDO J4 O JTAG test data out. TESTMODE K3 I This pin is used for factory testing. Recommended to connect to ground. TMS K5 I JTAG test mode select. TRST J5 I JTAG test reset. Must be connected to ground if not used. TXENABLE K6 I Transmit enable active high input. Internal pull-down. To enable analog output data transmission, pull the CMOS TXENABLE pin to high. To disable analog output, pull CMOS TXENABLE pin to low. The DAC output is forced to midscale. VDDA1 F11, J11 I Analog 1V supply voltage. VDDA18 G11, H11 I Analog 1.8V supply voltage. (1.8 V) VDDPLL1 D8, E8 I Analog 1V supply for PLL. VDDAPLL18 B9, B10 I PLL analog supply voltage. (1.8 V) VDDAVCO18 D9, E9 I Analog supply voltage for VCO (1.8 V) VDDCLK1 G9, H9 I Internal clock buffer supply voltage (1 V) It is recommended to isolate this supply from VDDDIG1 and VDDA1. VDDL1_1 G8, H8 I DAC core supply voltage. (1 V) VDDL2_1 G10, H10 I DAC core supply voltage. (1 V) VDDDIG1 A5, B5, C5, D5, D7, E3, E4, E5, E6, F4, F5, G4, G5 I Digital supply voltage. (1 V) It is recommended to isolate this supply from VDDCLK1 and VDDA1. VDDE1 F7, H7, G6, J6 I Digital Encoder supply voltage (1 V). Must be separated from VDDDIG1 on new substrate device VDDIO18 H5 I Supply voltage for all digital I/O and CMOS I/O. VDDOUT18 G12, H12 I DAC supply voltage (1.8 V) VDDR18 H2, J2 I Supply voltage for SerDes. (1.8 V) VDDS18 B3, B4 I Supply voltage for LVDS SYNC0+/- and SYNC1+/- (1.8V) VDDT1 H3, J3 I Supply voltage for SerDes termination. (1 V) VDDTX1 B6 I Supply voltage for divided clock output. (1 V) VDDTX18 B7 I Supply voltage for divided clock output. (1.8 V) VEE18N D10, E10, K10, L10 I Analog supply voltage. (-1.8 V) VOUT1 K12 O DAC channel 1 single ended output. VOUT2 E12 O DAC channel 2 single ended output. Leave pin floating in DAC38RF84 VSENSE D4 I Test pin for on chip parametrics. Can be left floating. VSSCLK A8, A11, B8, B11, B12, F8, F9, F10, J8, J9, J10 - Clock ground. |
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