Datasheet

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SLAS284A – AUGUST 2000 – REVISED DECEMBER 2002
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3
ELECTRICAL CHARACTERISTICS
over recommended operating conditions, AV
DD
= DV
DD
= 5 V, BV
DD
= 3.3 V, V
REWF
= internal (unless otherwise noted)
DIGITAL SPECIFICATIONS
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Digital inputs
I
IH
High-level input current DV
DD
= digital inputs –50 50 µA
I
IL
Low-level input current Digital input = 0 V –50 50 µA
C
i
Input capacitance 5 pF
Digital outputs
V
OH
High-level output voltage I
OH
= –50 µA
BV 3 3 V 5 V
BV
DD
–0.5 V
V
OL
Low-level output voltage I
OL
= 50 µA
BV
DD
= 3.3 V, 5 V
0.4 V
I
OZ
High-impedance-state output current CS1 = DGND, CS0 = DV
DD
–10 10 µA
C
O
Output capacitance 5 pF
C
L
Load capacitance at databus D0 – D11 30 pF
ELECTRICAL CHARACTERISTICS
over recommended operating conditions, AV
DD
= DV
DD
= 5 V, BV
DD
= 3.3 V, f
s
= 6 MSPS, V
REF
= internal (unless otherwise noted)
DC SPECIFICATIONS
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Resolution 12 Bits
Accuracy
Integral nonlinearity, INL ±1.5 LSB
Differential nonlinearity, DNL ±1 LSB
Offset error
After calibration in single-ended mode 20 LSB
Offset error
After calibration in differential mode –20 20 LSB
Gain error –20 20 LSB
Analog input
Input capacitance 15 pF
Input leakage current V
AIN
= V
REFM
to V
REFP
±10 µA
Internal voltage reference
Accuracy, V
REFP
3.3 3.5 3.7 V
Accuracy, V
REFM
1.4 1.5 1.6 V
Temperature coefficient 50 PPM/°C
Reference noise 100 µV
Accuracy, REFOUT 2.475 2.5 2.525 V
Power supply
I
DDA
Analog supply current AV
DD
= DV
DD
= 5 V, BV
DD
=3.3 V 36 40 mA
I
DDD
Digital supply current AV
DD
= DV
DD
= 5 V, BV
DD
= 3.3 V 0.5 3 mA
I
DDB
Buffer supply current AV
DD
= DV
DD
= 5 V, BV
DD
= 3.3 V 1.5 4 mA
Power dissipation AV
DD
= DV
DD
= 5 V, BV
DD
= 3.3 V 186 216 mW
Power dissipation in power down with conversion
clock inactive
AV
DD
= DV
DD
= 5 V, BV
DD
= 3.3 V 0.25 mW