Rainbow Electronics ADC12040 - Manual (Page 6)

Converter Electrical Characteristics
(Continued)
Unless otherwise specified, the following specifications apply for AGND = DGND = DR GND = 0V, V
A
= V
D
= +5V, V
DR
=
+3.0V, PD = 0V, V
REF
= +2.0V, f
CLK
= 40 MHz, t
r
= t
f
= 3 ns, C
L
= 20 pF/pin. Boldface limits apply for T
A
= T
J
= T
MIN
to
T
MAX
: all other limits T
A
= T
J
= 25˚C (Notes 7, 8, 9)
Symbol Parameter Conditions
Typical
(Note 10)
Limits
(Note 10)
Units
(Limits)
REFERENCE AND ANALOG INPUT CHARACTERISTICS
V
CM
Common Mode Input Voltage V
A
/2 V
C
IN
V
IN
Input Capacitance (each pin to
GND)
V
IN
= 2.5 Vdc
+ 0.7 V
rms
(CLK LOW) 8 pF
(CLK HIGH) 7 pF
V
REF
Reference Voltage (Note 13) 2.00
1.0 V (min)
2.2 V (max)
Reference Input Resistance 100 M Ω (min)
DC and Logic Electrical Characteristics
Unless otherwise specified, the following specifications apply for AGND = DGND = DR GND = 0V, V
A
= V
D
= +5V, V
DR
=
+3.0V, PD = 0V, V
REF
= +2.0V, f
CLK
= 40 MHz, t
r
= t
f
= 3 ns, C
L
= 20 pF/pin. Boldface limits apply for T
A
= T
J
= T
MIN
to
T
MAX
: all other limits T
A
= T
J
= 25˚C (Notes 7, 8, 9)
Symbol Parameter Conditions
Typical
(Note 10)
Limits
(Note 10)
Units
(Limits)
CLK, PD, OE DIGITAL INPUT CHARACTERISTICS
V
IN(1)
Logical “1” Input Voltage V
D
= 5.25V 2.0 V (min)
V
IN(0)
Logical “0” Input Voltage V
D
= 4.75V 1.0 V (max)
I
IN(1)
Logical “1” Input Current V
IN
= 5.0V 10 µA
I
IN(0)
Logical “0” Input Current V
IN
= 0V −10 µA
C
IN
Digital Input Capacitance 5 pF
D0–D11 DIGITAL OUTPUT CHARACTERISTICS
V
OUT(1)
Logical “1” Output Voltage I
OUT
= −0.5 mA
V
DR
= 2.5V 2.3 V (min)
V
DR
= 3V 2.7 V (min)
V
OUT(0)
Logical “0” Output Voltage I
OUT
= 1.6 mA, V
DR
= 3V 0.4 V (max)
I
OZ
TRI-STATE Output Current
V
OUT
= 2.5V or 5V 100 nA
V
OUT
= 0V −100 nA
+I
SC
Output Short Circuit Source
Current
V
OUT
= 0V −20 mA (min)
−I
SC
Output Short Circuit Sink Current V
OUT
= V
DR
20 mA (min)
POWER SUPPLY CHARACTERISTICS
I
A
Analog Supply Current
PD Pin = DGND, V
REF
= 2.0V
PD Pin = V
DR
59
8
66 mA (max)
mA
I
D
Digital Supply Current
PD Pin = DGND
PD Pin = V
DR
, f
CLK
= 0
6
0
7.3 mA (max)
mA
I
DR
Digital Output Supply Current
PD Pin = DGND, C
L
= 0 pF (Note 14)
PD Pin = V
DR
, f
CLK
= 0
3
0
mA (max)
mA
Total Power Consumption
PD Pin = DGND, C
L
= 0 pF (Note 15)
PD Pin = V
DR
, f
CLK
= 0
340
40
366 mW
mW
PSRR1 Power Supply Rejection
Rejection of Full-Scale Error with
V
A
= 4.75V vs. 5.25V
58 dB
PSRR2 Power Supply Rejection
SNR Degradation w/10 MHz,
200 mV
P-P
riding on V
A
50 dB
ADC12040
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