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TLC7628CN Datasheet(PDF) 5 Page - Texas Instruments |
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TLC7628CN Datasheet(HTML) 5 Page - Texas Instruments |
5 / 10 page TLC7628C, TLC7628E, TLC7628I DUAL 8-BIT MULTIPLYING DIGITAL-TO-ANALOG CONVERTERS SLAS063A – APRIL 1989 – REVISED MAY 1995 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 APPLICATION INFORMATION These devices are capable of performing 2-quadrant or full 4-quadrant multiplication. Circuit configurations for 2-quadrant and 4-quadrant multiplication are shown in Figures 2 and 3. Input coding for unipolar and bipolar operation are summarized in Tables 2 and 3, respectively. 17 DGND 5 16 15 6 7 14 VDD Input Buffer Control Logic WR CS DACB DACA/ DB7 DBO VI(B) ±10 V R3 (see Note A) REFB 8 8 88 REFA RFBA OUTA AGND AGND OUTB RFBB C1 (see Note B) A1 R4 (see Note A) C2 (see Note B) AGND A3 VOA R2 (see Note A) R1 (see Note A) ±10 V VI(A) VOB RECOMMENDED TRIM RESISTOR VALUES R1, R3 R2, R4 500 Ω 150 Ω Latch DACA Latch DACB NOTES: A. R1, R2, R3, and R4 are used only if gain adjustment is required. See table for recommended values. Make gain adjustment with digital input of 255. B. C1 and C2 phase compensation capacitors (10 pF to 15 pF) are required when using high-speed amplifiers to prevent ringing or oscillation. Figure 2. Unipolar Operation (2-Quadrant Multiplication) |
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