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DAC2814BP 数据表(PDF) 7 Page - Burr-Brown (TI) |
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DAC2814BP 数据表(HTML) 7 Page - Burr-Brown (TI) |
7 / 11 page 7 ® DAC2814 MODE CLR CLK CS LATCH A LATCH B FUNCTION X1 ↓ 0 X X Data Clocked In X 1 X 1 X X No Data Transfer X 1 X 0 0 1 DAC A Register Updated X 1 X 0 1 0 DAC B Register Updated X 1 X 0 0 0 DAC A and DAC B Updated Together 0 0 X X X X All Registers Cleared 1 0 X X X X Shift Registers Cleared = 000HEX, DAC Registers = 800HEX NOTE: X = Don’t care ↓ = Falling edge triggered. t1 t3 t2 t8 t7 t4 t6 t5 CLK Data CS LATCH A LATCH B CLR 0V 5V 0V 5V 5V 5V NOTES: (1) All input signal rise and fall times are measured from 10% to 90% of +5V • t = t = 5ns. (2) Timing measurement reference level is V + V . R F IH IL 2 TIMING CHARACTERISTICS VL = +5V, TA = –40°C to +85°C. PARAMETER MINIMUM t1—Data Setup Time 15ns t2—Data Hold time 15ns t3—Chip Select to CLK, 15ns Latch, Data Setup Time t4—Chip Select to CLK, 40ns Latch, Data Hold Time t5—CLK Pulse Width 40ns t6—Clear Pulse Width 40ns t7—Latch Pulse Width 40ns t8—CLK Edge to LATCH A 15ns or LATCH B INTERFACE LOGIC TRUTH TABLE FUNCTIONAL BLOCK DIAGRAM , DAC2814 — Dual, 12-bit DAC, Serial Port 10k Ω 10k Ω 20k Ω 20k Ω 20k Ω 20k Ω 6 18 17 +V L BPO B V B OUT DAC B 19 14 BPO A V A OUT DAC A 12 Inv Out Control Logic 12-Bit Latch Register 12-Bit Shift Register 12-Bit Latch Register 12-Bit Shift Register Bits 0-11 0-11 Bits 0-11 0-11 5 15 16 1 7 10 8 4 MODE CLR LATCH B LATCH A 22 +V S –V S DGND +V Out REF Inv In AGND Data Out 23 Data In 11 V In REF Bit 11 Bit 11 +10V Voltage Reference CLK 2 21 CS 24 3 A 3 A 2 A 1 |
类似零件编号 - DAC2814BP |
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类似说明 - DAC2814BP |
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