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.)
(V
DD
= +5V, V
REFIN
= +2.5V. External Reference, V
AGND
= V
DGND
= 0V, V
SS
= 0V or -5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
LOGIC OUTPUTS
BUSY, D0–D7 Output Low Voltage V
OL
I
OUT
= 1.6mA 0.4 V
Output High Voltage V
OH
I
OUT
= -360µA 4 V
D0–D7 Floating State Leakage ±10 µA
Floating State Output Capacitance
(Note 2)
C
OUT
15 pF
Conversion Time f
CLK
= 5MHz, single channel 3.6 3.8 µs
POWER REQUIREMENTS
Positive Power-Supply Voltage V
DD
4.75 5.25 V
Positive Power-Supply Current I
DD
PD = 0
MAX155 18 24
mA
MAX156 9 12
PD = 1
CLK, CS, WR,
RD = 0V or V
DD
;
D
OUT
= 0V or
V
DD
25 100 µA
Negative Power-Supply Voltage V
SS
0 -5 V
Negative Power-Supply Current I
SS
PD = 0 2 50
µA
PD = 1 2 50
Power-Supply Rejection (Change
in Full-Scale Error)
V
DD
= 5V ±5%, V
SS
= 0V ±0.1 ±0.25
LSB
V
DD
= 5V, V
SS
= -5V ±5% ±0.1
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
CS to WR Setup Time t
CWS
0 ns
CS to WR Hold Time t
CWH
0 ns
CS to RD Setup Time t
CRS
0 ns
CS to RD Hold Time (Note 2) t
CRH
0 ns
WR Low Pulse Width t
WR
MAX15_C/E 100 2000 ns
RD Low Pulse Width t
RDL
MAX15_C/E 100 ns
RD High Pulse Width (Note 2) t
RDH
MAX15_C/E 180 ns
WR to RD Delay (Note 2) t
WRD
MAX15_C/E 280 ns
WR to BUSY Low Delay t
WBD
MAX15_C/E 220 ns
MAX155/MAX156 8-/4-Channel ADCs with Simultaneous
T/Hs and Reference
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Maxim Integrated │ 4
TIMING CHARACTERISTICS (Note 3, Figures 1–7)
Electrical Characteristics (continued)