Datasheet

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SBAS253E − MAY 2003 − REVISED JULY 2006
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4
1.5 ELECTRICAL CHARACTERISTICS (continued)
Over recommended operating free-air temperature range at –40_C to +85_C, AV
DD
= 5V, BV
DD
= 3.3V, V
REF
= internal +2.5V, f
CLK
= 16MHz,
f
SAMPLE
= 1 MSPS, unless otherwise noted.
ADS7869I
PARAMETER UNITMAXTYP
(1)
MINCONDITION
Digital Inputs
(3)
Logic Family LVCMOS
V
IH
High-Level Input Voltage BV
DD
= 3.6V 2 BV
DD
+ 0.3 V
V
IL
Low-Level Input Voltage BV
DD
= 2.7V −0.3 0.8 V
I
IN
Input Current V
I
= BV
DD
to BGND ±50 nA
C
I
Input Capacitance 5 pF
Digital Outputs
(3)
Logic Family LVCMOS
V
OH
High-Level Output Voltage BV
DD
= 2.7V, I
OH
= −100µA BV
DD
− 0.2 V
V
OL
Low-Level Output Voltage BV
DD
= 2.7V, I
OL
= +100µA 0.2 V
I
OZ
High-Impedance-State Output Current V
I
= BV
DD
to BGND ±50 nA
C
O
Output Capacitance 5 pF
C
L
Load Capacitance 30 pF
Power Supply
AV
DD
Analog Supply Voltage 4.5 5.5 V
BV
DD
Buffer I/O Supply Voltage 2.7 5.5 V
AI
DD
Analog Supply Current 45 50 mA
BI
DD
Buffer I/O Supply Voltage 2 mA
Power Dissipation 250 mW
Reference Output
V
REF
Reference Output Voltage −40°C > t > +85°C 2.475 2.500 2.525 V
V
REF
Reference Output Voltage at 25°C 2.480 2.500 2.520 V
dV
REF
/dT Reference Voltage Drift ±20 ppm/°C
PSRR Power-Supply Rejection Ratio 60 dB
I
OUT
Output Current DC Current 1 µA
I
SC
Short-Circuit Current 1 mA
t
ON
Turn-On Setting Time 100 µs
Reference Input
V
IN
Reference Input Voltage 2.475 2.5 2.525 V
Input Resistance 100 MΩ
Input Capacitance 5 pF
Digital-to-Analog Converter
Resolution 8 Bits
Output Range I
OUT
= 0 0 2.49 V
INL Integral Linearity Error ±1 LSB
DNL Differential Linearity Error ±2 LSB
Offset Error 0.5 1 LSB
Full-Scale Error FS = Internal Reference Voltage − 1LSB ±1 %
I
OUT
Output Current 0.5 µA
Output Settling Time to 0.5LSB, no load capacitance 0.2 1 µs
Position Sensor Sign Comparator
Input Range Lower Voltage of Differential Inputs 0 AV
DD
− 1.8 V
Offset Range ±5 ±30 mV
Hysteresis 75 100 mV
Delay Time 25 150 ns
(1) All values are at T
A
= +25_C.
(2) Applies for 5.0V nominal supply: 4.5V < BV
DD
< 5.5V.
(3) Applies for 3.0V nominal supply: 2.7V < BV
DD
< 3.6V.