Datasheet

(V
DD
= +5V, V
REFIN
= +2.5V. External Reference, V
AGND
= V
DGND
= 0V, V
SS
= 0V or -5V, f
CLK
= 5MHz external, Unipolar range
single-ended mode, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
ANALOG INPUT
Voltage Range, Unipolar, Single-
Ended
AIN_(+) to AGND 0 V
REF
V
Unipolar Differential AIN_(+) to AIN_(-) 0 V
REF
Bipolar, Single-Ended AIN_(+) to AGND -V
REF
V
REF
Bipolar, Differential AIN_(+) to AIN_(-) -V
REF
V
REF
Common-Mode Range Differential mode V
SS
V
DD
DC Input Impedance AIN = V
DD
10 MΩ
REFERENCE INPUT
REFIN Range (For Specied
Performance) (Note 2)
2.375 2.500 2.625 V
I
REF
V
REFIN
= 2.5V 1 mA
REFERENCE OUTPUT (C
L
= 4.7µF)
Output Voltage I
L
= 0mA
T
A
= +25°C 2.44 2.50 2.56
V
T
A
= T
MIN
to
T
MAX
2.38 2.50 2.62
Load Regulation T
A
= +25°C, I
OUT
= 0 to 10mA -10 mV
Power-Supply Sensitivity T
A
= +25°C, V
DD
= 5V ±5% ±1 ±3 mV
Temperature Drift ±100 ppm/°C
LOGIC INPUTS (Mode = Open Circuit)
CS, RD, WR, CLK, D0–D7 (When
Inputs) Input Low Voltage
V
IL
0.8 V
Input High Voltage V
IH
2.4 V
Input Current I
IN
±10 µA
Input Capacitance (Note 2) C
IN
15 pF
MODE
Input Low Voltage V
IL
0.5 V
Input High Voltage V
IH
V
DD
-
0.5
V
Input Midlevel Voltage V
MID
V
DD
/2
- 0.5
V
DD
/2
+ 0.5
V
Input Floating Voltage V
FLT
V
DD
/2 V
Input Current I
IN
±50 ±100 µA
MAX155/MAX156 8-/4-Channel ADCs with Simultaneous
T/Hs and Reference
www.maximintegrated.com
Maxim Integrated │ 3
Electrical Characteristics (continued)