ETF6124 데이터 시트보기 (PDF) - TriQuint Semiconductor
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ETF6124 Datasheet PDF : 9 Pages
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TQ6124
Operating Notes (continued)
Power Supplies
Optimized performance depends on clean supplies.
Utilize very low impedance negative supplies that are
decoupled over a wide frequency range. The analog and
digital grounds should be isolated at the chip, connecting
to a single point ground on the circuit board.
ECL Reference
The single-ended data inputs switch against an internal
reference of -1.3V (nominal). Variations among input
buffers, or in VTT, may benefit from adjustments in the
reference. The ECL reference pin may be driven externally.
Its equivalent load is 400 ohms to –1.3V (nominal).
Trim Adjustments
The external trim adjustments for the midrange bits
and the LSBs is optional. Trimming is performed by
monitoring the attribute of greatest concern (INL, DNL,
Spurious levels) while minimizing the unwanted effects.
Trim inputs should be left open if not used.
Signals
Figure 6. TQ6124 Pinout
VSS
1
D10
2
D11
3
D12
4
D13 (MSB) 5
DGND 6
DGND 7
DGND 8
CLK
9
NCLK 10
VSS
11
TQ6124
Top View
33 VSS
32 D 2
31 D1
30 D0 (LSB)
29 DGND
28 DGND
27 ECLref
26 LSBtrim
25 Midtrim
24
V
AA
23
V
AA
6
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