參數(shù)資料
型號(hào): 5962-0924001VXC
廠商: TEXAS INSTRUMENTS INC
元件分類: ADC
英文描述: 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, CQFP100
封裝: HERMETIC SEALED, CERAMIC, QFP-100
文件頁數(shù): 5/46頁
文件大?。?/td> 1109K
代理商: 5962-0924001VXC
CLKINP
RESETP
tPD-CLKDIV4
tRSU
tRH
CLKOUTAP
DATA BUSB
SYNCOUTB
(OVRBpins)
DATA BUS A
N+1
N+2
CLKOUTA isresetafter 7.5 CLKINcycles (+ tPD-CLKDIV4 )
SampleNandRESET
pulsecapturedhere
N+1
sampled
Phase 0: CLKOUT indesired
stateafterpowerup
Phase 1: misalignedby 1
clockafterpowerup
Phase 2: misalignedby 2
clocksafterpowerup
Phase 3: misalignedby 3
clocksafterpowerup
CLKOUTBP
Phase 0: CLKOUT indesired
stateafterpowerup
Phase 1: misalignedby 1
clockafterpowerup
Phase 2: misalignedby 2
clocksafterpowerup
Phase 3: misalignedby 3
clocksafterpowerup
LatencyofN+1 is 7.5 CLKINcycles
tPD-ADATA
IfSYNCmodeisenabled,
theOVRBpinsbecomeSYNCOUTBpins
LatencyofNandSYNCOUTBarematchedto 7.5 CLKINcycles
ThephaseofdatashownpriortoresetmatchesCLKOUTBinphase 0
ThephaseofdatashownpriortoresetmatchesCLKOUTA inphase 0
tPD-CLKDIV4
N
Sync
CLKOUTBisresetafter 6.5 CLKINcycles (+ tPD-CLKDIV4 )
N
output
N+1
output
th
tsu
PD-BDATA
t
SLAS669B
– SEPTEMBER 2010 – REVISED MAY 2011
Timing Diagrams (continued)
Propagation delays and setup/hold times not drawn to scale. RESET and SYNCOUT are optional. Any clock phase
will work properly, but makes synchronization of data capture across multiple ADCs difficult without a known CLKOUT
phase. RESET can be a single pulse (as shown), low-to-high step or repetitive pulse input signal. The frequency of
repetitive RESET pulses should not exceed CLKIN/4, and should be an even divisor of CLKIN, in order to keep the
CLKOUT phase the same with each RESET event. SYNCOUTB transitions with the same latency as the sample that
is present when the RESET pulse is captured, shown here as sample N. Each RESET captured generates a
SYNCOUT pulse, which behaves as a data bit.
Figure 5. Dual Bus Mode - Staggered, CLKOUT Divide By 4
Copyright
2010–2011, Texas Instruments Incorporated
13
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