AS1530/AS1531
Data Sheet - Electrical Characteristics
Table 3. AS1530 Electrical Characteristics (Continued)
Symbol
Parameter
Conditions
Min
Typ
Max Units
Capacitive Bypass at
REFADJ
CBYPREF
ADJ
0.01
10
µF
REFADJ Output Voltage
REFADJ Input Range
1.22
V
For small adjustments, from 1.22V
To power down the internal reference
±100
mV
REFADJ Buffer Disable
Threshold
VDD1 -
1
1.4
1.0
V
Buffer Voltage Gain
2.045
200
V/V
External Reference: Reference buffer disabled, reference applied to pin REF
VDD1
+
50mV
REF Input Voltage Range 8
V
VREF = 2.50V,
fSCLK = 6.4MHz
350
REF Input Current
µA
VREF = 2.50V, fSCLK = 0
320
5
Power-Down, fSCLK = 0
Digital Inputs: DIN, SCLK, CSN
0.7 x
VDD
VINH
VINL
Input High Voltage
Input Low Voltage
V
V
0.3 x
VDD
VHYST
IIN
Input Hysteresis
Input Leakage
0.2
5
V
VIN = 0 or VDD2
-1
+1
µA
pF
CIN
Input Capacitance
Digital Outputs: DOUT, SSTRB
VOL
VOH
IL
Output Voltage Low
Output Voltage High
ISINK = 5mA
ISOURCE = 1mA
CSN = VDD2
CSN = VDD2
0.45
+10
V
V
4
Tri-State Leakage Current
Tri-State Output Capacitance
-10
µA
pF
COUT
5
Power Supply
VDD1,
VDD2,
Positive Supply Voltage 9
4.5
5.5
3.3
V
VDD3
Normal Operation with
2.8
External Reference 10
Normal Operation with
Internal Reference 10
mA
IVDD1,
IVDD2,
IVDD3
3.3
0.4
3.8
0.8
VDD1 = VDD2 =
VDD3 = 5.5V
Supply Current
Reduced-Power Mode 11
Full Power-Down Mode
0.5
2
µA
PSR
Power-Supply Rejection
VDD1 = VDD2 = VDD3 = 5V ±10%
-2
±0.1
+2
mV
1. Tested at VDD1 = VDD2 = VDD3 = +5V, COM = GND, bit RANGE (page 15) = 1, single-ended input mode.
2. Relative accuracy is the deviation of the analog value at any code from its theoretical value after the gain error
and offset error have been nulled.
3. Offset nulled.
4. Ground on channel; sinewave applied to all off channels.
5. Conversion time is defined as the number of clock cycles multiplied by the clock period; clock has 50% duty
cycle.
6. The absolute voltage range for the analog inputs (CH0:CH7, and COM) is from GND to VDD1.
7. External load should not change during conversion for specified accuracy. Guaranteed specification of 4mV/mA
is a result of production test limitations.
8. AS1530/AS1531 performance is limited by the device noise floor, typically 300µVp-p.
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