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DAC5688 数据表(PDF) 7 Page - Texas Instruments |
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DAC5688 数据表(HTML) 7 Page - Texas Instruments |
7 / 57 page CLK 2 1 0.55 2f - DAC5688 www.ti.com SLLS880C – DECEMBER 2007 – REVISED AUGUST 2010 ELECTRICAL CHARACTERISTICS (DIGITAL SPECIFICATIONS) Over recommended operating free-air temperature range, AVDD, IOVDD = 3.3V, DVDD, CLKVDD = 1.8V. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT CMOS INTERFACE: SDO, SDIO, SCLK, SDENB, RESETB, DA[15:0], DB[15:0], SYNC, TXENABLE, CLKO_CLK1, LOCK_CLK1C CONFIG26 io_1p8_3p3 = 0 (3.3V levels) 2.30 VIH High-level input voltage V CONFIG26 io_1p8_3p3 = 1 (1.8V levels) 1.25 CONFIG26 io_1p8_3p3 = 0 (3.3V levels) 1.00 VIL Low-level input voltage V CONFIG26 io_1p8_3p3 = 1 (1.8V levels) 0.54 IIH High-level input current ±20 mA IIL Low-level input current ±20 mA CI CMOS Input capacitance 2 pF SDO, SDIO ILOAD = –100 mA IOVDD – 0.2 VOH V SDO, SDIO ILOAD = –2 mA 0.8 × IOVDD SDO, SDIO ILOAD = 100 mA 0.2 VOL V SDO, SDIO ILOAD = 2 mA 0.5 Input data rate 0 250 MSPS ts(SDENB) Setup time, SDENB to rising edge of SCLK 20 ns ts(SDIO) Setup time, SDIO valid to rising edge of SCLK 10 ns th(SDIO) Hold time, SDIO valid to rising edge of SCLK 5 ns tSCLK Period of SCLK 100 ns tSCLKH High time of SCLK 40 ns tSCLK Low time of SCLK 40 ns td(Data) Data output delay after falling edge of SCLK 10 ns tRESET Minimum RESETB pulse width 25 ns TIMING PARALLEL DATA INPUT: (DUAL CLOCK and DUAL SYNCHRONOUS CLOCK MODES: Figure 32) ts Setup time 1 ns CLK1/C = input th Hold time 1 ns Max timing offset between CLK1 and CLK2 DUAL SYNCHRONOUS BUS MODE only t_align ns rising edges (Typical characteristic) TIMING PARALLEL DATA INPUT (EXTERNAL CLOCK MODE: Figure 33 and PLL CLOCK MODE: Figure 34) ts Setup time 1 ns CLKO_CLK1 = input or output. Note: Delay th Hold time time increases with higher capacitive 1 ns loads. td(CLKO) Delay time 4.5 ns CLOCK INPUT (CLK2/CLK2C) CLK2/C Duty cycle 40% 60% CLK2/C Differential voltage(1) 0.4 1 V CLK2/C Input common mode 2/3 × V CLKVDD CLK2C Input Frequency 800 MHz CLOCK INPUT (CLK1/CLK1C) CLK1/C Duty cycle 40% 60% CLK1/C Differential voltage 0.4 1.0 V CLK1/C Input common mode IOVDD V /2 CLK1/C Input Frequency 250 MHz CLOCK OUTPUT (CLKO) CLKO Output Frequency(2) with 3pF load 160 MHz (1) Driving the clock input with a differential voltage lower than 1V will result in degraded performance. (2) Specified by design and simulation. Not production tested. It is recommended to buffer CLKO. Copyright © 2007–2010, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Link(s): DAC5688 |
类似零件编号 - DAC5688_14 |
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类似说明 - DAC5688_14 |
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