MAX149AEAP Maxim Integrated Products, MAX149AEAP Datasheet - Page 16
MAX149AEAP
Manufacturer Part Number
MAX149AEAP
Description
ADC (A/D Converters) Integrated Circuits (ICs)
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX148BCAP.pdf
(23 pages)
Specifications of MAX149AEAP
Architecture
SAR
Conversion Rate
133 KSPs
Input Type
Voltage
Maximum Power Dissipation
640 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
SSOP-20
Minimum Operating Temperature
- 40 C
Lead Free Status / Rohs Status
No
+2.7V to +5.25V, Low-Power, 8-Channel,
Serial 10-Bit ADCs
Table 5. Software Power-Down and Clock
Mode
Figure 12b. Timing Diagram Power-Down Modes, Internal Clock
Figure 13. Average Supply Current vs. Conversion Rate with
External Reference
16
PD1
CLOCK
SSTRB
MODE
MODE
0
0
1
1
_____________________________________________________________________________________
DOUT
DIN
10,000
1000
100
0.1
10
AVERAGE SUPPLY CURRENT vs. CONVERSION
1
PD0
S X X X X X 1 0
0.1
0
1
0
1
RATE WITH EXTERNAL REFERENCE
VREF = V
R
CODE = 1010101000
LOAD
1
= ∞
8 CHANNELS
DD
CONVERSION RATE (Hz)
10
= 3.0V
SETS INTERNAL
CLOCK MODE
100
CONVERSION
Fast Power-Down
Full Power-Down
1k
DEVICE MODE
External Clock
1 CHANNEL
Internal Clock
10k
100k
POWERED OFF
1M
DATA VALID
INTERNAL
5 X X X X X 0 0
Table 6. Hard-Wired Power-Down and
Internal Clock Frequency
Figure 14a. MAX149 Supply Current vs. Conversion Rate,
FULLPD
Unconnected
STATE
SHDN
1
0
SETS
POWER-DOWN
CONVERSION
100
10
1
0.01
DEVICE
Enabled
Enabled
vs. CONVERSION RATE (USING FULLPD)
MODE
Power-
Down
R
CODE = 1010101000
LOAD
AVERAGE SUPPLY CURRENT
0.1
= ∞
CONVERSION RATE (Hz)
DATA VALID
COMPENSATION
POWER-DOWN
1
REFERENCE
8 CHANNELS
BUFFER
External
Internal
—
10
1 CHANNEL
100
S
POWERED UP
FREQUENCY
INTERNAL
1k
CLOCK
1.8MHz
225kHz
—