MAX1111EEE-T Maxim Integrated, MAX1111EEE-T Datasheet - Page 17

• Manufacturer Part Number: MAX1111EEE-T
• Description: Analog to Digital Converters - ADC
• Manufacturer: Maxim Integrated

Specifications of MAX1111EEE-T

• Number Of Channels: 4/2
• Architecture: SAR
• Conversion Rate: 50 KSPs
• Resolution: 8 bit
• Input Type: Single-Ended/Differential
• Snr: Yes
• Interface Type: 4-Wire (SPI, Microwire), QSPI
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QSOP-16
• Maximum Power Dissipation: 667 mW
• Minimum Operating Temperature: - 40 C
• Number Of Converters: 1
• Voltage Reference: Internal 2.048 V or External

To use the MAX1110/MAX1111 with the internal refer-
ence, connect REFIN to REFOUT. The full-scale range
of the MAX1110/MAX1111 with the internal reference is
typically 2.048V with unipolar inputs, and ±1.024V with
bipolar inputs. The internal reference should be
bypassed to AGND with a 1µF capacitor placed as
close to the REFIN pin as possible.
Figure 14a. Power-Down Modes, External Clock Timing Diagram
Figure 14b. Power-Down Modes, Internal Clock Timing Diagram
CLOCK
SSTRB
MODE
MODE
MODE
DOUT
SHDN
DOUT
DIN
DIN
INTERNAL
S X X X X X 1 1
S X X X X X 1 0
______________________________________________________________________________________
SETS EXTERNAL
CLOCK MODE
SETS INTERNAL
CLOCK MODE
CONVERSION
POWERED UP
DATA VALID
Internal Reference
+2.7V, Low-Power, Multichannel,
POWERED UP
EXTERNAL
S
DATA VALID
X
X
X
X
X
INTERNAL CLOCK MODE
0 1
SETS POWER-
DOWN MODE
S
X
DATA VALID
X
X
Table 4 shows the full-scale voltage ranges for unipolar
and bipolar modes. Figure 15 depicts the nominal, unipo-
lar I/O transfer function, and Figure 16 shows the bipolar
I/O transfer function when using a 2.048V reference.
Code transitions occur at integer LSB values. Output cod-
ing is binary, with 1 LSB = 8mV (2.048V/256) for unipolar
operation and 1 LSB = 8mV [(2.048V/2 - -2.048V/2)/256]
for bipolar operation.
X
X
0 0
SETS POWER-DOWN MODE
CONVERSION
POWER-
DOWN
SETS EXTERNAL
CLOCK MODE
Serial 8-Bit ADCs
S
X X X X X
POWERED UP
1 1
DATA VALID
POWER-DOWN
Transfer Function
EXTERNAL
INVALID
POWER-
DOWN
DATA
S
POWERED
POWERED
UP
UP
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