MAX1280 Maxim, MAX1280 Datasheet - Page 3

• Manufacturer Part Number: MAX1280
• Description: MAX1280 Evaluation System
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS—MAX1280 (continued)
(V
+2.5V at REF, REFADJ = V
400ksps/300ksps, Single-Supply, Low-Power, 8-Channel,
ANALOG INPUTS (CH7–CH0, COM)
INTERNAL REFERENCE
EXTERNAL REFERENCE (Reference buffer disabled, reference applied to REF)
DIGITAL INPUTS (DIN, SCLK, CS, SHDN)
DIGITAL OUTPUTS (DOUT, SSTRB)
Input Voltage Range, Single-
Ended and Differential (Note 6)
Multiplexer Leakage Current
Input Capacitance
REF Output Voltage
REF Short-Circuit Current
REF Output Temperature
Coefficient
Load Regulation (Note 7)
Capacitive Bypass at REF
Capacitive Bypass at REFADJ
REFADJ Output Voltage
REFADJ Input Range
REFADJ Buffer Disable
Threshold
Buffer Voltage Gain
REF Input Voltage Range
REF Input Current
Input High Voltage
Input Low Voltage
Input Hysteresis
Input Leakage
Input Capacitance
Output Voltage Low
Output Voltage High
Three-State Leakage Current
Three-State Output Capacitance
DD1
= V
PARAMETER
DD2
= +4.5V to +5.5V, COM = GND, f
_______________________________________________________________________________________
DD1
, T
Serial 12-Bit ADCs with Internal Reference
A
= T
SYMBOL
TC V
V
C
V
V
V
V
V
V
HYST
C
MIN
CH_
I
REF
OUT
INH
INL
OH
I
IN
OL
IN
L
REF
to T
MAX
Unipolar, V
Bipolar, V
referenced to COM or CH_
On/off leakage current, V
T
0 to 1mA output load
For small adjustments, from 1.22V
To power down the internal reference
(Note 8)
V
V
In power-down, f
V
I
I
CS = 5V
CS = 5V
SINK
SOURCE
A
REF
REF
IN
, unless otherwise noted. Typical values are at T
SCLK
= +25°C
= 0 or V
= 2.500V, f
= 2.500V, f
= 5mA
= 6.4MHz, 50% duty cycle, 16 clocks/conversion cycle (400ksps), external
= 1mA
COM
COM
DD2
or V
CONDITIONS
= 0
SCLK
SCLK
SCLK
CH_
= 6.4MHz
= 0
= 0
= V
CH_
REF
= 0 or V
/2,
DD1
2.480
0.01
MIN
4.7
1.4
1.0
3.0
A
4
= +25°C.)
±0.001
2.500
±100
TYP
1.22
2.05
±15
200
18
0.1
0.2
30
15
15
±V
V
2.520
50mV
V
V
DD1
±10
350
320
2.0
0.8
0.4
±1
±1
REF
10
10
DD1
REF
MAX
5
/2
+
ppm/°C
mV/mA
UNITS
mA
mV
V/V
mA
µA
pF
µF
µF
µA
µA
pF
µA
pF
V
V
V
V
V
V
V
V
V
V
3