AS1543/44
Data Sheet - Electrical Characteristics
Table 3. Electrical Characteristics (Continued)
Symbol
Parameter
Condition
Min
Typ
Max
Unit
Conversion Rate
tCONV
Conversion Time
16 SCLK Cycles, SCLK = 20MHz
800
300
1
ns
ns
Track-and-HoldAcquisition
Time
Throughput Rate
Aperture Delay
Aperture Jitter
Msps
ns
4
50
ps
Analog Input
Bit RANGE = 1
0
0
VREFIN
VINx
Input Voltage Ranges
Bit SE/FDN = 1
Bit RANGE = 0
V
V
2 x
VREFIN
-VREFIN/
2
VREFIN/
2
Bit RANGE = 1
Bit SE/FDN = 0
Differential Input Voltage
Ranges
VINx - VINy
VCMIN
Bit RANGE = 0
-VREFIN
VREFIN
VDD -
VREFIN/
2
Bit RANGE = 1
Bit SE/FDN = 0
VREFIN/2
Input Common Mode
Voltage
V
VDD -
VREFIN
Bit RANGE = 0
VREFIN
DC Leakage Current
Input Capacitance
-1
+1
µA
pF
20
44
Reference Input
REFIN Input Voltage1
2.5V ±1% for Specified Performance
fSAMPLE = 1Msps
1
VDD
±1
V
DC Leakage Current
REFIN Input Impedance
µA
kΩ
Digital Inputs: CSN, SCLK, DIN
0.7 x
VDRIVE
VIH
VIL
Input High Voltage
Input Low Voltage
V
V
0.3 x
VDRIVE
IIN
Input Current,
VIN = 0V or VDRIVE
-1
+1
µA
pF
CIN
Input Capacitance
5
Digital Output: DOUT
VDRIVE
VOH
VOL
Output High Voltage
ISOURCE = 200µA; VDD = 2.7 to 5.25V
ISINK = 200µA
V
V
- 0.2
Output Low Voltage
0.4
+1
Floating-State
Leakage Current
Bit WEAK/TRIN (page 14) set to 0
-1
µA
Floating-State
Bit WEAK/TRIN set to 0
10
pF
Output Capacitance
Bit CODING (page 14) set to 1
Bit CODING set to 0
Straight (natural) binary
Two’s complement
Output Coding
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