ADT7518
Rev. A | Page 3 of 40
SPECIFICATIONS
Table 1. Temperature range is as follows: A version: 40癈 to +120癈. V
DD
= 2.7 V to 5.5 V, GND = 0 V, REF
IN
= 2.25 V, unless
otherwise noted.
Parameter
1
Min
Typ
Max
Unit
Conditions/Comments
DAC DC PERFORMANCE
2,3
Resolution
8
Bits
Relative Accuracy
?.15 ?
LSB
Differential Nonlinearity
?.02 ?.25
LSB
Guaranteed monotonic over all codes.
Offset Error
?.4
?
% of FSR
Gain Error
?.3
?
% of FSR
Lower Deadband
20
65
mV
Lower deadband exists only if offset error is
negative. See Figure 8.
Upper Deadband
60
100
mV
Upper deadband exists if V
REF
= V
DD
and offset
plus gain error is positive. See Figure 9.
Offset Error Drift
4
12
ppm of FSR/癈
Gain Error Drift
4
5
ppm of FSR/癈
DC Power Supply Rejection Ratio
4
60
dB
VDD = ?0%.
DC Crosstalk
4
200
礦
See Figure 5.
ADC DC ACCURACY
Max VDD = 5 V.
Resolution
10
Bits
Total Unadjusted Error (TUE)
2
3
% of FSR
Offset Error
?.5
% of FSR
Gain Error
?
% of FSR
ADC BANDWIDTH
DC
Hz
ANALOG INPUTS
5
Input Voltage Range
0
2.25
V
AIN1 to AIN4. C4 = 0 in Control Configuration 3.
0
V
DD
V
AIN1 to AIN4. C4 = 0 in Control Configuration 3.
DC Leakage Current
?
礎
Input Capacitance
5
20
pF
Input Resistance
10
M&
THERMAL CHARACTERISTICS
6
INTERNAL TEMPERATURE SENSOR
Internal reference used. Averaging on.
Accuracy @ VDD = 3.3 V ?0%
?.5
癈
TA = 85癈.
?.5
?
癈
TA= 0癈 to +85癈.
?
?
癈
T
A
= 40癈 to +120癈.
Accuracy @ V
DD
= 5 V ?%
?
?
癈
T
A
= 0癈 to +85癈.
?
?
癈
T
A
= 40癈 to +120癈.
Resolution
10
Bits
Equivalent to 0.25癈.
Long-Term Drift
0.25
癈
Drift over 10 years if part is operated at 55癈.
THERMAL CHARACTERISTICS
6
EXTERNAL TEMPERATURE SENSOR
External transistor = 2N3906.
Accuracy @ VDD = 3.3 V ?10%
?.5
癈
TA = 85癈.
?
癈
T
A
= 0癈 to +85癈.
?
癈
T
A
= 40癈 to +120癈.
Accuracy @ V
DD
= 5 V ?5%
?
?
癈
T
A
= 0癈 to +85癈.
?
?
癈
TA = 40癈 to +120癈.
Resolution
10
Bits
Equivalent to 0.25癈.
Output Source Current
180
礎
High Level.
11
礎
Low Level.
THERMAL CHARACTERISTICS
6
Thermal Voltage Output
8-Bit DAC Output
Resolution
1
癈
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