MAX1497 Maxim, MAX1497 Datasheet - Page 4

• Manufacturer Part Number: MAX1497
• Description: 3.5- and 4.5-Digit / Single-Chip ADCs with LED Drivers and C Interface
• Manufacturer: Maxim

3.5- and 4.5-Digit, Single-Chip ADCs with LED
Drivers and µC Interface
ELECTRICAL CHARACTERISTICS (continued)
(AV
C
Typical values are at T
4
Input Capacitance
Average Dynamic Input Current
CHARGE PUMP
Output Voltage
DIGITAL INPUTS (SCLK, DIN, CS, CLK)
Input Current
Input Low Voltage
Input High Voltage
Input Hysteresis
DIGITAL OUTPUTS (DOUT, EOC)
Output Low Voltage
Output High Voltage
Tri-State Leakage Current
Tri-State Output Capacitance
POWER SUPPLY (Note 10)
V
AV
DV
Power-Supply Rejection V
Power-Supply Rejection AV
Power-Supply Rejection DV
V
AV
REF+
DD
DD
DD
DD
DD
DD
_______________________________________________________________________________________
Voltage
Current (Notes 8, 9)
= DV
= C
Voltage
Current (Notes 8, 9)
Voltage
PARAMETER
REF-
DD
= V
= 0.1µF, C
DD
= +2.7V to +5.25V, GND = 0, GLED = 0, V
A
= +25°C, unless otherwise noted.)
DD
VNEG
DD
DD
= 0.1µF. Internal clock mode, unless otherwise noted. All specifications are at T
SYMBOL
PSRR
PSRR
VNEG
DV
I
C
AV
PSRR
V
V
I
AVDD
V
V
V
V
VDD
I
HYS
OUT
INH
INL
OH
I
IN
OL
DD
L
DD
DD
A
D
(Note 6)
C
V
MAX1499
MAX1497
MAX1499
MAX1497
DV
I
I
I
DOUT only
DOUT only
MAX1497
MAX1499
MAX1499
(Note 7)
(Note 7)
(Note 7)
V
V
Standby mode
AV
AV
Standby mode
SOURCE
SOURCE
SINK
IN
DD
DD
VNEG
DD
DD
DD
= 0 or DV
= 5.25V
= 3.3V
= 1mA
= 5.25V
= 3.3V
= V
= 0.1µF
= 200µA, M AX 1499
= 200µA, M AX 1497
DD
= 3.0V
DD
CONDITIONS
LED
= V
= +2.7V to +5.25V, V
DD
REF+
- V
DV
DV
-2.60
0.7 x
0.7 x
0.8 x
0.8 x
MIN
V
V
2.70
2.70
2.70
-20
-10
-1
REF-
DD
DD
DD
DD
= 2.048V (external reference)
-2.42
TYP
200
100
664
618
268
10
15
80
80
A
DV
-2.30
MAX
0.3 x
0.3 x
5.25
5.25
5.25
+20
+10
V
744
663
325
640
600
305
0.4
+1
= T
DD
DD
MIN
to T
UNITS
mV
dB
dB
dB
pF
nA
µA
µA
pF
µA
µA
V
V
V
V
V
V
V
V
MAX
.