MAX149BEAP+ Maxim Integrated Products, MAX149BEAP+ Datasheet - Page 16

• Manufacturer Part Number: MAX149BEAP+
• Description: IC ADC 10BIT SERIAL 20-SSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX149BEAP+

• Number Of Bits: 10
• Sampling Rate (per Second): 133k
• Data Interface: MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 640mW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SSOP
• Number Of Adc Inputs: 8
• Architecture: SAR
• Conversion Rate: 133 KSPs
• Resolution: 10 bit
• Input Type: Voltage
• Interface Type: 4-Wire (SPI, QSPI, MICROWIRE, TMS320)
• Voltage Reference: 2.5 V
• Supply Voltage (max): 5.25 V
• Supply Voltage (min): 2.7 V
• Maximum Power Dissipation: 640 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Input Voltage: 5 V
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

+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
—