MAX1238EEE Maxim Integrated Products, MAX1238EEE Datasheet - Page 4

• Manufacturer Part Number: MAX1238EEE
• Description: ADC (A/D Converters)
• Manufacturer: Maxim Integrated Products

Specifications of MAX1238EEE

• Number Of Adc Inputs: 12
• Architecture: SAR
• Conversion Rate: 94.4 KSPs
• Resolution: 12 bit
• Interface Type: I2C
• Voltage Reference: Internal 4.096 V
• Supply Voltage (max): 5 V
• Mounting Style: SMD/SMT
• Package / Case: QSOP-16
• Lead Free Status / Rohs Status: No

2.7V to 3.6V and 4.5V to 5.5V, Low-Power,
4-/12-Channel, 2-Wire Serial, 12-Bit ADCs
ELECTRICAL CHARACTERISTICS (continued)
(V
4.096V (MAX1236/MAX1238), f
Tables 1–5 for programming notation.)
TIMING CHARACTERISTICS (Figure 1)
(V
4.096V (MAX1236/MAX1238), f
T
4
TIMING CHARACTERISTICS FOR FAST MODE
Serial-Clock Frequency
Bus Free Time Between a STOP (P)
and a START (S) Condition
Hold Time for START (S) Condition
Low Period of the SCL Clock
High Period of the SCL Clock
Setup Time for a Repeated START
Condition (Sr)
Data Hold Time (Note 10)
Data Setup Time
Rise Time of Both SDA and SCL
Signals, Receiving
Fall Time of SDA Transmitting
Setup Time for STOP (P) Condition
Capacitive Load for Each Bus Line
Pulse Width of Spike Suppressed
POWER REQUIREMENTS
Supply Voltage
Supply Current
Power-Supply Rejection Ratio
A
DD
DD
= +25°C, see Tables 1–5 for programming notation.)
_______________________________________________________________________________________
= 2.7V to 3.6V (MAX1237/MAX1239), V
= 2.7V to 3.6V (MAX1237/MAX1239), V
PARAMETER
PARAMETER
SCL
= 1.7MHz, T
SCL
SYMBOL
SYMBOL
t
t
t
t
t
HD, DAT
HD, STA
SU, DAT
SU, STO
SU, STA
PSRR
t
t
V
t
f
HIGH
I
LOW
BUF
SCL
C
t
DD
t
DD
t
SP
= 1.7MHz, T
R
F
B
DD
DD
MAX1237/MAX1239
MAX1236/MAX1238
f
external clock
f
internal clock
f
internal clock
f
internal clock
Shutdown (internal REF off)
Full-scale input (Note 9)
Measured from 0.3V
Measured from 0.3V
A
= 4.5V to 5.5V (MAX1236/MAX1238), V
= 4.5V to 5.5V (MAX1236/MAX1238), V
SAMPLE
SAMPLE
SAMPLE
SAMPLE
= T
MIN
A
= 94.4ksps
= 40ksps
= 10ksps
=1ksps
= T
to T
MAX
MIN
CONDITIONS
CONDITIONS
, unless otherwise noted. Typical values are at T
to T
DD
DD
- 0.7V
- 0.7V
MAX
Internal reference
External reference
Internal reference
External reference
Internal reference
External reference
Internal reference
External reference
, unless otherwise noted. Typical values are at
DD
DD
(Note 11)
REF
REF
= 2.048V (MAX1237/MAX1239), V
= 2.048V (MAX1237/MAX1239), V
20 + 0.1C
20 + 0.1C
MIN
MIN
100
1.3
0.6
1.3
0.6
0.6
0.6
2.7
4.5
0
B
B
TYP
TYP
±0.5
900
670
530
230
380
330
0.5
60
6
1150
MAX
MAX
A
±2.0
400
900
300
300
400
900
3.6
5.5
50
10
= +25°C, see
UNITS
UNITS
LSB/V
kHz
REF
REF
pF
µA
µs
µs
µs
µs
µs
ns
ns
ns
ns
µs
ns
V
=
=