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參數(shù)資料
| 型號(hào)： | TMS57014ADWBLE |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | DAC |
| 英文描述： | DUAL, SERIAL INPUT LOADING, 18-BIT DAC, PDSO28 |
| 封裝： | PLASTIC, SOIC-28 |
| 文件頁(yè)數(shù)： | 6/17頁(yè) |
| 文件大?。?/td> | 250K |
| 代理商： | TMS57014ADWBLE |
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TMS57014A
DUAL AUDIO DIGITAL-TO-ANALOG CONVERTER
SLAS077D – SEPTEMBER 1993 – REVISED NOVEMBER 1995
14
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
circuit and layout considerations
The designer should follow these guidelines for the best device performance.
D Separate digital and analog ground planes should be used. All digital device functions should be over the
digital ground plane, and all analog device functions should be over the analog ground plane. The ground
planes should be connected at only one point to the direct power supply, and this is usually at the connector
edge of the board.
D A single crystal-controlled clock should synchronously generate all digital signals
D All power supply lines should include a 0.1-F and a 1-F capacitor. When clock noise is excessive, a
toroidal inductance of 10
H should be placed in series with XVDD before connecting to DVDD.
D The digital input control signals should be buffered when they are generated off the card.
D Clock jitter should be minimized, and precautions taken to prevent clock overshoot. This minimizes any
high-frequency coupling to the analog output.
PCB footprint
Figure 11 shows the printed-circuit-board (PCB) land pattern for the TMS57014A small-outline package.
L1
L2
L
W
P
S
L2
L1
L
P
1.27
S
9.53
W
0.76
L
1.55
L1
0.64
L2
0.91
NOTE A: All linear dimensions are in millimeters.
Figure 11. Land Pattern for PCB Layout
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