Manual

Absolute Maximum Ratings (Notes 1,
2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltages (V
A
,V
D
,V
D
I/O) 6.5V
|V
A
–V
D
| ≤100 mV
V
D
I/O–V
A
,V
D
I/O–V
D
≤300 mV
Voltage on Any Input or Output Pin −0.3V to V
A
+0.3V
Input Current at Any Pin (Note 3)
±
25 mA
Package Input Current (Note 3)
±
50 mA
Power Dissipation at T
A
= 25˚C See (Note 4)
ESD Susceptibility
Human Body Model (Note 5) 2500V
Machine Model (Note 5) 250V
Soldering Temperature, Infrared,
(10 sec.) (Note 6) 300˚C
Storage Temperature −65˚C to +150˚C
Operating Ratings (Notes 1, 2)
Operating Temperature Range −40˚C ≤ T
A
≤
+85˚C
Supply Voltage (V
A
,V
D
) +4.75V to +5.25V
Output Driver Supply Voltage (V
D
I/O) +2.7V to V
D
V
REF
Input 1.8V to 2.2V
CLOCK, CAL, PD, OE
−0.05V to V
D
+0.05V
Ground Difference |AGND–DGND| ≤100 mV
Converter 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
=20MHz,3V
P-P
at 50% duty cycle, C
L
= 25 pF/pin. After Auto-Cal. 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 11)
Units
(Limits)
STATIC CONVERTER CHARACTERISTICS
Resolution with No Missing Codes 12 Bits (min)
INL Integral Non-Linearity
±
1.0
±
2.5 LSB (max)
DNL Differential Non-Linearity
±
0.35
±
0.9 LSB (max)
Full-Scale Error +3
±
10 LSB (max)
Zero Error +7
±
17 LSB (max)
DYNAMIC CONVERTER CHARACTERISTICS
BW Full Power Bandwidth 100 MHz
SNR Signal-to-Noise Ratio f
IN
= 4.43 MHz, V
IN
= 2.0 V
P-P
65.5 62.5 dB (min)
SINAD Signal-to-Noise and Distortion f
IN
= 4.43 MHz, V
IN
= 2.0 V
P-P
65 62 dB (min)
ENOB Effective Number of Bits f
IN
= 4.43 MHz, V
IN
= 2.0 V
P-P
10.5 10 Bits (min)
THD Total Harmonic Distortion f
IN
= 4.43 MHz, V
IN
= 2.0 V
P-P
−76 dB
SFDR Spurious Free Dynamic Range f
IN
= 4.43 MHz, V
IN
= 2.0 V
P-P
75 dB
REFERENCE AND ANALOG INPUT CHARACTERISTICS
V
IN
Input Voltage Range V
REF
V (max)
C
IN
V
IN
Input Capacitance
(CLK LOW) 10 pF
(CLK HIGH) 15 pF
V
REF
Reference Voltage (Note 14) 2.00
1.8 V (min)
2.2 V (max)
Reference Input Leakage Current 10 µA
Reference Input Resistance 1 MΩ
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
=20MHz,3V
P-P
at 50% duty cycle, C
L
= 25 pF/pin. After Auto-Cal. 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 11)
Units
(Limits)
CLOCK, CAL, PD, OE DIGITAL INPUT CHARACTERISTICS
V
IH
Logical “1” Input Voltage V
D
= 5.25V 2.0 V (min)
ADC12281
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