MAX1270 Maxim, MAX1270 Datasheet - Page 3

• Manufacturer Part Number: MAX1270
• Description: Multirange / +5V / 8-Channel / Serial 12-Bit ADCs
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS (continued)
(V
(50% duty cycle), 18 clock/conversion cycle, 110ksps; T
REFADJ Output Voltage
ANALOG INPUT
INTERNAL REFERENCE
REFERENCE INPUT (Reference buffer disabled, reference input applied to REF)
ANALOG INPUT
Track/Hold Acquisition Time
Small-Signal Bandwidth
Input Voltage Range
Input Current
Dynamic Resistance
Input Capacitance
INTERNAL REFERENCE
REF Output Voltage
REF Output Tempco
Output Short Circuit Current
Load Regulation (Note 5)
Capacitive Bypass at REF
Capacitive Bypass at REFADJ
REFADJ Adjustment Range
Buffer Voltage Gain
REFERENCE INPUT (Reference
Input Voltage Range
Input Current
DD
= +5.0V ±5%; unipolar/bipolar range; external reference mode, V
PARAMETERS
____________________________________________________________________________________
SYMBOL
∆V
TC V
t
V
IN
ACQ
V
I
REF
IN
IN
/∆I
REF
IN
f
-3dB
rolloff
Unipolar
(BIP = 0),
Table 3
Bipolar
(BIP = 1),
Table 3
Unipolar
Bipolar
Unipolar
Bipolar
(Note 4)
T
MAX1270_C/MAX1271_C
MAX1270_E/MAX1271_E
0 to 0.5mA output current
Figure 1
V
CLK
A
REF
= +25°C
= 2.0MHz
= 4.18V
A
Multirange, +5V, 8-Channel,
= T
±10V or ±V
±5V or ±V
0 to 10V or 0 to V
0 to 5V or 0 to V
MAX1270
MAX1271
MAX1270
MAX1271
MAX1270
MAX1271
MAX1270
MAX1271
MIN
CONDITIONS
to T
MAX
REF
REF
Normal or STBYPD
FULLPD
REF
/
; unless otherwise noted. Typical values are T
2
range
range
REF
= +4.096V; 4.7µF at REF; external clock, f
REF
RNG = 1
RNG = 0
RNG = 1
RNG = 0
RNG = 1
RNG = 0
RNG = 1
RNG = 0
0 to 5V range
±5V range
±V
0 to 10V range
±10V range
±V
/
2
range
REF
REF
range
Serial 12-Bit ADCs
/2 range
range
-V
-V
-1200
-1200
4.076
2.465
-600
-600
0.01
2.40
MIN
-10
REF
-10
-10
-10
4.7
-5
0
0
0
0
REF
/2
4.096
2.500
1.638
±1.5
TYP
1.25
±15
±30
2.5
2.5
0.1
21
16
5
V
V
4.116
2.535
MAX
V
V
4.18
REF
REF
720
360
720
360
400
10
10
10
10
10
40
30
10
REF
REF
3
5
5
1
CLK
A
/2
/2
= +25°C.)
= 2.0MHz
ppm/°C
UNITS
MHz
mA
mV
V/V
kΩ
µA
pF
µF
µF
µA
µs
%
7-171
V
V
V
V