Electrical characteristics (continued) – Rainbow Electronics MAX1039 User Manual
Page 4
MAX1036–MAX1039
2.7V to 5.5V, Low-Power, 4-/12-Channel
2-Wire Serial 8-Bit ADCs
4
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ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 2.7V to 3.6V (MAX1037/MAX1039), V
DD
= 4.5V to 5.5V (MAX1036/MAX1038). External reference, V
REF
= 2.048V
(MAX1037/MAX1039), V
REF
= 4.096V (MAX1036/MAX1038). External clock, f
SCL
= 1.7MHz, T
A
= T
MIN
to T
MAX
, unless otherwise
noted. Typical values are at T
A
= +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
POWER REQUIREMENTS
MAX1037/MAX1039
2.7
3.6
Supply Voltage (Note 10)
V
DD
MAX1036/MAX1038
4.5
5.5
V
Internal REF, external clock
350
650
f
SAMPLE
=
188ksps
External REF, external clock
250
External REF, external clock
110
f
SAMPLE
=
75ksps
External REF, internal clock
150
External REF, external clock
8
f
SAMPLE
=
10ksps
External REF, internal clock
10
External REF, external clock
2
f
SAMPLE
=
1ksps
External REF, internal clock
2.5
Supply Current
I
DD
Power-down
1
10
µA
Power-Supply Rejection Ratio
PSRR
(Note 11)
±0.25
±1
LSB/V
TIMING CHARACTERISTICS FOR 2-WIRE FAST MODE (Figures 1A and 2)
Serial Clock Frequency
f
SCL
400
kHz
Bus Free Time Between a STOP
and a START Condition
t
BUF
1.3
µs
Hold Time for Start Condition
t
HD,
STA
0.6
µs
Low Period of the SCL Clock
t
LOW
1.3
µs
High Period of the SCL Clock
t
HIGH
0.6
µs
Setup Time for a Repeated START
Condition (Sr)
t
SU,
STA
0.6
µs
Data Hold Time
t
HD,
DAT
(Note 12)
0
150
ns
Data Setup Time
t
SU,
DAT
100
ns
Rise Time of Both SDA and SCL
Signals, Receiving
t
R
(Note 13)
20 + 0.1C
B
300
ns
Fall Time of SDA Transmitting
t
F
(Note 13)
20 + 0.1C
B
300
ns
Setup Time for STOP Condition
t
SU,
STO
0.6
µs
Capacitive Load for Each Bus Line
C
B
400
pF
Pulse Width of Spike Suppressed
t
SP
50
ns
TIMING CHARACTERISTICS FOR 2-WIRE HIGH-SPEED MODE (Figures 1B and 2)
Serial Clock Frequency
f
SCLH
(Note 14)
1.7
MHz
Hold Time (Repeated) Start
Condition
t
HD,
STA
160
ns
Low Period of the SCL Clock
t
LOW
320
ns
High Period of the SCL Clock
t
HIGH
120
ns