AS1530/AS1531
Data Sheet - Electrical Characteristics
9. Electrical characteristics are guaranteed from VDD1(MIN) = VDD2(MIN) = VDD3(MIN) to VDD1(MAX) = VDD2(MAX) =
VDD3(MAX). For operations beyond this range, see Typical Operating Characteristics on page 11. For guaranteed
specifications beyond the limits, contact austriamicrosystems, AG.
10. AIN = mid-scale; bit RANGE (page 15) = 1; tested with 20pF on DOUT, 20pF on SSTRB, and fSCLK = 6.4MHz
@ GND to VDD2.
11. SCLK = DIN = GND, CSN = VDD2.
AS1531 Electrical Characteristics
VDD1 = VDD2 =
VDD3 = +2.7 to +3.6V, COM = GND, fSCLK = 4.8MHz, 50% duty cycle, 16 clocks/conversion cycle
(300ksps), external +2.5V at REF, REFADJ = VDD1, TAMB = TMIN to TMAX (unless otherwise specified). Typ values at
TAMB = +25ºC.
Table 4. AS1531 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
Offset Error
No missing codes over temperature
-1
-6
+1
+6
LSB
LSB
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: 75kHz sinewave input, 2.5Vp-p, 300ksps, 4.8MHz clock, bit RANGE (page 15) = 0,
pseudo-differential input mode
Signal-to-Noise plus
SINAD
THD
70
-81
84
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 = 73kHz, fIN2 = 77kHz
fIN = 150kHz, VIN = 2.5Vp-p
76
-80
dB
Full-Power Bandwidth
Full-Linear Bandwidth
-3dB point
6
MHz
kHz
SINAD > 68dB
350
Conversion Rate
Conversion Time 5
tCONV
Normal operation
Normal operation
3.3
µs
tACQ
tAD
Track/Hold Acquisition Time
Aperture Delay
520
ns
ns
7
tAJ
Aperture Jitter
<50
ps
fSCLK
Serial Clock Frequency
Duty Cycle
Normal operation
0.5
40
4.8
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 AVDD
Input Capacitance
-1
±0.001
18
+1
µA
pF
Internal Reference
REF Output Voltage
REF Short-Circuit Current
VREF
TAMB = +25°C
2.48
2.50
30
2.52
V
mA
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