AS1528/AS1529
Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s
6 Electrical Characteristics
V
DD
= +2.7 to +5.25V, V
REF
= +2.5V, 4.7µF Capacitor at REF; f
SCLK
= 8MHz (50% Duty Cycle); AIN- = GND (AS1528)
T
AMB
= T
MIN
to TMAX (unless otherwise specified). Typical Values at T
AMB
= +25ºC. Unipolar Mode (AS1528).
Table 4. Electrical Characteristics
Symbol
DC Accuracy
Resolution
INL
DNL
Relative Accuracy
Differential Non-Lineraity
Offset Error
Gain Error
1
Parameter
Condition
Min
10
Typ
Max
Unit
Bits
±0.275
No Missing Codes Over Temperature
±0.25
±0.25
±0.3
±0.3
±0.025
±0.025
±0.275
±2
±2
LSB
LSB
LSB
LSB
ppm/ºC
ppm/ºC
LSB
LSB
Gain Temp Coefficient
Offset Temp Coefficient
Channel-to-Channel Offset
Match
Channel-to-Channel Gain
Match
Dynamic Specifications –
(f
IN
(sinewave) = 10kHz, V
IN
= 2.5V
P-P
, 150ksps, f
SCLK
= 8MHz (50% duty cycle), AIN- =
GND (AS1528)
SINAD
THD
SFDR
Signal-to-Noise Plus Distortion
Total Harmonic Distortion (to
the 5th Harmonic)
Spurious-Free Dynamic Range
Full Power Bandwidth
Full Linear Bandwidth
Conversion Rate
t
CONV
t
ACQ
Conversion Time
Track/Hold Acquisition Time
Aperture Delay
f
SCLK
Max Serial Clock Frequency
Serial Clock Duty Cycle
Analog Input
V
IN
Range
2
61.5
-79.5
84
-3dB Point
-0.1dB Point
Exclusive of t
ACQ
20
400
3.3
3.7
1.4
30
8
30
Unipolar
Bipolar
No Channel Selected or Conversion
Halted
Track Mode
Hold Mode
0
-V
REF
/2
±0.01
20
5
V
DD
+
50mV
11
19
0
+2
+5
25
70
V
REF
V
REF
/2
±1
dB
dB
dB
MHz
kHz
µs
µs
ns
MHz
%
V
µA
pF
pF
Input Leakage Current
Input Capacitance
External Reference Input
V
REF
V
IN
Range
1.0
V
REF
= +2.5V @ 150ksps
V
I
REF
Input Current
V
REF
= +4.096V @ 150ksps
Acquisition Between Conversions
µA
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