TLV5535
8-BIT, 35 MSPS, LOW-POWER ANALOG-TO-DIGITAL CONVERTER
SLAS221 – JUNE 1999
electrical characteristics over recommended operating conditions, f
voltage references (unless otherwise noted) (continued)
= 35 MSPS, external
CLK
timing requirements
PARAMETER
Maximum conversion rate
Minimum conversion rate
Output delay time (see Figure 1)
Output hold time
TEST CONDITIONS
MIN
TYP
MAX
UNIT
MHz
kHz
ns
35
f
CLK
10
9
t
t
C
C
= 10 pF,
= 2 pF,
See Notes 5 and 6
See Note 5
d(o)
L
L
2
ns
h(o)
CLK
cycles
t
Pipeline delay time (latency)
See Note 6
4.5
4.5
4.5
d(pipe)
t
t
t
t
Aperture delay time
3
1.5
5
ns
ps, rms
ns
d(a)
j(a)
dis
en
Aperture jitter
See Note 5
Disable time, OE rising to Hi-Z
Enable time, OE falling to valid data
8
8
5
ns
NOTES: 5. Outputtiming t
d(o)
is measured from the 1.5 V level oftheCLKinputfallingedgetothe10%/90%levelofthedigitaloutput. Thedigital
output load is not higher than 10 pF.
Output hold time t is measured from the 1.5 V level of the CLK input falling edge to the 10%/90% level of the digital output. The
h(o)
digital output is load is not less than 2 pF.
Aperture delay t is measured from the 1.5 V level of the CLK input to the actual sampling instant.
d(A)
The OE signal is asynchronous.
OE timing t is measured from the V
level of OE to the high-impedance state of the output data. The digital output load is
dis IH(MIN)
not higher than 10 pF.
OE timing t is measured from the V
levels. The digital output load is not higher than 10 pF.
level of OE to the instant when the output data reaches V
OH(min)
or V
output
OL(max)
en IL(MAX)
6. The number of clock cycles between conversion initiation on an input sample and the corresponding output data being made
available from the ADC pipeline. Once the data pipeline is full, new valid output data is provided on every clock cycle. In order to
know when data is stable on the output pins, the output delay time t
(i.e., the delay time through the digital output buffers) needs
is more than 1/2 clock period at 35 MHz, data cannot be reliably
d(o)
to be added to the pipeline latency. Note that since the max t
d(o)
clocked in on a rising edge of CLK at this speed. The falling edge should be used.
7
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