Rainbow-electronics ADC10D040 Manual do Utilizador Página 9

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Converter Electrical Characteristics (Continued)
The following specifications apply for V
A
=V
D
= +3.3 V
DC
,V
DR
= +2.5 V
DC
,V
REF
= 1.4 V
DC
, GAIN = OF = 0V, OS = 3.3V, V
IN
(a.c. coupled) = FSR = 1.4 V
P-P
,C
L
= 15 pF, f
CLK
= 40 MHz, 50% Duty Cycle, R
S
=50,t
rc
=t
fc
<
4 ns, NOT offset cor-
rected. Boldface limits apply for T
A
=T
MIN
to T
MAX
: all other limits T
A
= 25˚C (Note 7).
Symbol Parameter Conditions
Typical
(Note 8)
Limits
(Note 9)
Units
(Limits)
I
D
Digital Supply Current
PD = LOW, STBY = LOW, d.c. input 9 10 mA (max)
PD = LOW, STBY = HIGH 0.1 mA
PD = HIGH, STBY = LOW or HIGH 0.1 mA
I
DR
Digital Output Driver Supply
Current (Note 10)
PD = STBY = LOW, dc input 1.9 2.5 mA (max)
PD Power Consumption
PD = LOW, STBY = LOW, d.c. input 267 305 mW (max)
PD = LOW, STBY = LOW, 1 MHz Input 270 mW
PD = LOW, STBY = HIGH 30 mW
PD = HIGH, STBY = LOW or HIGH 0.6 mW
PSRR1 Power Supply Rejection Ratio
Change in Full Scale with 3.0V to 3.6V Supply
Change
90 dB
PSRR2 Power Supply Rejection Ratio
Rejection at output with 10.3 MHz, 250 mV
P-P
Riding on V
A
and V
D
52 dB
AC Electrical Characteristics OS = Low (Multiplexed Mode)
The following specifications apply for V
A
=V
D
= +3.3 V
DC
,V
DR
= +2.5V
DC
,V
REF
= 1.4 V
DC
, GAIN = OF = 0V, OS = 0V, V
IN
(a.c. coupled) = FSR = 1.4 V
P-P
,C
L
= 15 pF, f
CLK
= 40 MHz, 50% Duty Cycle, R
S
=50,t
rc
=t
fc
<
4 ns, NOT offset cor-
rected. Boldface limits apply for T
A
=T
MIN
to T
MAX
: all other limits T
A
= 25˚C (Note 7)
Symbol Parameter Conditions
Typical
(Note 8)
Limits
(Note 9)
Units
(Limits)
f
CLK
1
Maximum Clock Frequency 45 40 MHz (min)
f
CLK
2
Minimum Clock Frequency 20 MHz
Duty Cycle 50
45
55
% (min)
% (max)
Pipeline Delay (Latency)
I Data 2.5 Clock Cycles
Q Data 3.0 Clock Cycles
t
r
,t
f
Output Rise and Fall Times 5 ns
t
OC
Offset Correction Pulse Width 10 ns (min)
t
OD
Output Delay from CLK Edge to
Data Valid
13 19 ns (max)
t
DIQ
I/Q Output Delay 13 ns
t
SKEW
I/Q to Data Skew
±
200 ps
t
AD
Sampling (Aperture) Delay 2.2 ns
t
AJ
Aperture Jitter
<
10 ps (rms)
t
VALID
Data Valid Time 7.5 ns
Overrange Recovery Time
Differential V
IN
step from 1.5V to
0V
50 ns
t
WUPD
PD Low to 1/2 LSB Accurate
Conversion (Wake-Up Time)
<
1ms
t
WUSB
STBY Low to 1/2 LSB Accurate
Conversion (Wake-Up Time)
800 ns
ADC10D040
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