CS5101A
Notes:
6. Applies only in the track mode. When converting or calibrating, input capacitance will not exceed 30 pF.
7. Conversion time scales directly to the master clock speed. The times shown are for synchronous,
internal loopback (FRN mode) with 8.0 MHz CLKIN. In PDT, RBT, and SSC modes, asynchronous delay
between the falling edge of HOLD and the start of conversion may add to the apparent conversion time.
This delay will not exceed 1.5 master clock cycles + 10 ns. In PDT, RBT, and SSC modes, CLKIN can
be increased as long as the HOLD sample rate is 100 kHz max.
8. The CS5101A requires 6 clock cycles of coarse charge, followed by a minimum of 1.125
s of fine charge.
FRN mode allows 9 clock cycles for fine charge which provides for the minimum 1.125
s with an 8 MHz
clock, however; in PDT, RBT, or SSC modes, at clock frequencies of 8 MHz or less, fine charge may
be less than 9 clock cycles. This reflects the typ. specification (6 clock cycles + 1.125
s).
9. Throughput is the sum of the acquisition and conversion times. It will vary in accordance with conditions
affecting acquisition and conversion times, as described above.
10. All outputs unloaded. All inputs at VD+ or DGND.
11. Power consumption in the sleep mode applies with no master clock applied (CLKIN held high or low).
12. With 300 mV p-p, 1 kHz ripple applied to each supply separately in the bipolar mode. Rejection
improves by 6 dB in the unipolar mode to 90 dB. Figure 23 shows a plot of typical power supply
rejection versus frequency.
ANALOG CHARACTERISTICS (continued)
CS5101A -J,K
CS5101A -A,B
CS5101A -S,T
Parameter*
Symbol Min Typ Max Min Typ Max Min Typ Max
Units
Specified Temperature Range
-
0 to +70
40 to +85
55 to +125
°C
Analog Input
Aperture Time
-
25
-
25
-
25
-
ns
Aperture Jitter
-
100
-
100
-
100
-
ps
Input Capacitance
(Note 6)
Unipolar Mode
Bipolar Mode
-
320
200
425
265
-
320
200
425
265
-
320
200
425
265
pF
Conversion & Throughput
Conversion Time
(Note 7)
-8
-16
tc
tc
-
8.12
16.25
-
8.12
16.25
-
8.12
16.25
s
Acquisition Time
(Note 8)
-8
-16
ta
ta
-
2.6
1.88
3.75
-
2.6
1.88
3.75
-
2.6
2.88
3.75
s
Throughput
(Note 9)
-8
-16
ftp
100
50
-
100
50
-
100
50
-
kHz
Power Supplies
Power Supply Current
(Note 10)
Positive Analog
Negative Analog
(SLEEP High)
Positive Digital
Negative Digital
IA+
IA-
ID+
ID-
-
21
-21
11
-11
28
-28
15
-15
-
21
-21
11
-11
28
-28
15
-15
-
21
-21
11
-11
28
-28
15
-15
mA
Power Consumption
(Notes 10, 11)
(SLEEP High)
(SLEEP Low)
Pdo
Pds
-
320
1
430
-
320
1
430
-
320
1
430
-
mW
Power Supply Rejection:
(Note 12)
Positive Supplies
Negative Supplies
PSR
-
84
-
84
-
84
-
dB
DS45F2
3