AS1530/AS1531
Data Sheet - Electrical Characteristics
6 Electrical Characteristics
AS1530 Electrical Characteristics
VDD1 = VDD2 = VDD3 = +4.5 to +5.5V, COM = GND, fSCLK= 6.4MHz, 50% duty cycle, 16 clocks/conversion cycle
(400ksps), external +2.5V at REF, REFADJ = VDD1, TAMB = TMIN to TMAX (unless otherwise specified). Typ values at
TAMB = +25ºC.
Table 3. AS1530 Electrical Characteristics
Symbol
Parameter
Conditions
Min
Typ
Max Units
DC Accuracy 1
Resolution
Relative Accuracy 2
12
-1
Bits
INL
+1
LSB
DNL
Differential Nonlinearity
No missing codes over temperature
-1
-6
+1
+6
LSB
LSB
Offset Error
Gain Error 3
-6
+6
LSB
Gain-Error Temperature
Coefficient
ppm/
°C
±1.6
±0.2
Channel-to-Channel
Offset Error Matching
LSB
Dynamic Specifications: 100kHz sinewave input, 2.5Vp-p, 400ksps, 6.4MHz clock, bit RANGE (page 15) = 0,
pseudo-differential input mode
Signal-to-Noise plus
SINAD
THD
70
-82
83
dB
dB
dB
dB
Distortion Ratio
Total Harmonic Distortion
Up to the 5th harmonic
Spurious-Free
Dynamic Range
SFDR
IMD
Intermodulation Distortion
Channel-to-Channel
Crosstalk 4
fIN1 = 99kHz, fIN2 = 102kHz
fIN = 200kHz, VIN = 2.5Vp-p
76
-85
dB
Full-Power Bandwidth
Full-Linear Bandwidth
-3dB point
6
MHz
kHz
SINAD > 68dB
450
Conversion Rate
Conversion Time 5
tCONV
2.5
µs
tACQ
tAD
Track/Hold Acquisition Time
Aperture Delay
390
ns
ns
7
tAJ
Aperture Jitter
<50
ps
fSCLK
Serial Clock Frequency
Duty Cycle
0.5
40
6.4
60
MHz
%
Analog Inputs: CH0:CH7, COM
Input Voltage Range: Single-
Ended, Pseudo-Differential,
Bit RANGE (page 15) = 1
Bit RANGE (page 15) = 0
0
VREF
VCHx -
VCHy
(COM)
V
-VREF
/2
+VREF
/2
and Differential 6
Multiplexer Leakage Current On/off leakage current, VCHx = 0 or VDD1
Input Capacitance
-1
±0.001
18
+1
µA
pF
Internal Reference
VREF
REF Output Voltage
TAMB = +25ºC
2.48
2.50
30
2.52
V
REF Short-Circuit Current
mA
REF Output Temperature
Coefficient
ppm/
°C
TCVREF
±25
1.2
mV/
mA
Load Regulation 7
0 to 1mA output load
4.0
10
CBYPREF
Capacitive Bypass at REF
4.7
µF
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