Rainbow Electronics ADC12181 - Manual (Page 6)

DC and Logic Electrical Characteristics
The following specifications apply for AGND = DGND = DGND I/O = 0V, V
A
= V
D
= V
D
I/O = +5V, PD = +5V, V
REF
= +2.0V,
f
CLK
= 10MHz, C
L
= 50 pF/pin. After Auto-Cal at Temperature. Boldface limits apply for T
A
= T
MIN
to T
MAX
; all other limits
T
A
= T
J
= 25˚C (Note 7) (Note 8) and (Note 9)
Symbol Parameter Conditions
Typical
(Note
10)
Limits
(Note
11)
Units
(Limits)
CLK, OE Digital Input Characteristics
V
IH
Logical "1" Input Voltage V+ = 5.25V 2.0 V(min)
V
IL
Logical "0" Input Voltage V+ = 4.75V 0.8 V(min)
I
IH
Logical "1" Input Current V
IN
= 5.0V 5 µA
I
IL
Logical "0" Input Current V
IN
= 0V −5 µA
C
IN
V
IN
Input Capacitance 8 pF
D0 - D11 Digital Output Characteristics
V
OH
Logical "1" Output Voltage I
OUT
= −1mA 4 V (min)
V
OL
Logical "0" Output Voltage I
OUT
= 1.6mA 0.4 V (max)
I
OZ
TRI-STATE Output Current V
OUT
= 3V or 5V 10 µA
V
OUT
= 0V −10 µA
+I
SC
Output Short Circuit Source
Current
VDDO= 3V, V
OUT
= 0V −14
mA(min)
−I
SC
Output Short Circuit Sink Current VDDO= 3V, V
OUT
= V
O
16 mA(min)
Power Supply Characteristics
I
A
Analog Supply Current
PD = V
D
I/O
PD = DGND
2.5
45
4
55
mA(max)
mA(max)
I
D
Digital Supply Current
PD = V
D
I/O
PD = DGND
0.5
2
2
3
mA(max)
mA(max)
Total Power Consumption
PD = V
D
I/O
PD = DGND
15
235
30
290
mW(max)
mW(max)
AC Electrical Characteristics
The following specifications apply for AGND = DGND = DGND I/O = 0V, V
A
= V
D
= V
D
I/O = +5V, PD = +5V, V
REF
= +2.0V,
f
CLK
= 10 MHz, C
L
= 50 pF/pin. After Auto-Cal at Temperature. Boldface limits apply for T
A
= T
MIN
to T
MAX
; all other limits
T
A
= T
J
= 25˚C (Note 7) (Note 8) and (Note 10)
Symbol Parameter Conditions
Typical
(Note
10)
Limits
(Note
11)
Units
(Limits)
f
CLK
Clock Frequency
1 MHz(min)
10 MHz(max)
Clock Duty Cycle 50 %
t
CONV
Conversion Latency 10.25
Clock
Cycles
t
OD
Data output delay after rising clk
edge
V
D
I/O = 3V 44
ns
V
D
I/O = 5V 40
t
DIS
Data outputs into Tristate mode 21 nA (max)
t
EN
Data outputs active after Tristate 21 ns (max)
t
WCAL
Calibration request pulse width 3 Tclk(min)
t
RDYC
Ready Low after CAL request 3 Tclk
t
CAL
Calibration cycle 4000 Tclk
t
WPD
Power-down pulse width 3 Tclk(min)
t
RDYPD
Ready Low after PD request 3 Tclk
t
PD
Power down mode exit cycle 4000 Tclk
ADC12181
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