MAX1403EAI+ Maxim Integrated Products, MAX1403EAI+ Datasheet - Page 18

• Manufacturer Part Number: MAX1403EAI+
• Description: IC ADC 18BIT LP 28-SSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1403EAI+

• Number Of Bits: 18
• Sampling Rate (per Second): 480
• Data Interface: QSPI™, Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 21.45mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Number Of Adc Inputs: 5
• Architecture: Delta-Sigma
• Conversion Rate: 4.8 KSPs
• Resolution: 18 bit
• Input Type: Voltage
• Interface Type: Serial
• Voltage Reference: External
• Supply Voltage (max): 3 V
• Maximum Power Dissipation: 21.45 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Input Signal Type: Pseudo-Differential, Differential
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

+3V, 18-Bit, Low-Power, Multichannel,
Oversampling (Sigma-Delta) ADC
Table 4. SCAN Mode Scanning
Sequences (SCAN = 1)
Note: All other combinations reserved.
Table 5. Available Input Channels
(SCAN = 0)
Special Function Register (Write-Only)
Transfer-Function Register
18
DIFF
DIFF
Name
Defaults
Name
Defaults
0
0
0
1
1
1
0
0
0
1
1
1
______________________________________________________________________________________
FUNCTION
FUNCTION
M1
M1
0
0
1
0
0
1
0
0
1
0
0
1
M0
M0
0
1
0
0
1
0
0
1
0
0
1
0
First Bit (MSB)
First Bit (MSB)
AIN1–AIN6, AIN2–AIN6, AIN3–AIN6,
AIN4–AIN6, AIN5–AIN6
AIN1–AIN6, AIN2–AIN6, AIN3–AIN6,
AIN4–AIN6, AIN5–AIN6, CALOFF,
CALGAIN
AIN1–AIN6, AIN2–AIN6, AIN3–AIN6,
AIN4–AIN6, AIN5–AIN6, CALOFF,
CALGAIN
AIN1–AIN2, AIN3–AIN4, AIN5–AIN6
AIN1–AIN2, AIN3–AIN4, AIN5–AIN6,
CALOFF, CALGAIN
AIN1–AIN2, AIN3–AIN4, AIN5–AIN6,
CALOFF, CALGAIN
AIN1–AIN6, AIN2–AIN6, AIN3–AIN6,
AIN4–AIN6
CALOFF
CALGAIN
AIN1–AIN2, AIN3–AIN4, AIN5–AIN6
CALOFF
CALGAIN
RESERVED BITS
G2
0
0
0
AVAILABLE CHANNELS
SEQUENCE
PGA GAIN CONTROL
G1
0
0
0
MDOUT
G0
0
0
PGA
MDOUT: (Default = 0) Modulator Out Bit. MDOUT = 0
enables data readout on the DOUT pin, the normal con-
dition for the serial interface. MDOUT = 1 changes the
function of the DOUT and INT pins, providing raw, sin-
gle-bit modulator output instead of the normal serial-
data interface output. This allows custom filtering
directly on the modulator output, without going through
the on-chip digital filter. The INT pin provides a clock to
indicate when the modulator data at DOUT should be
sampled (falling edge of INT). Note that in this mode,
the on-chip digital filter continues to operate normally.
When MDOUT is returned to 0, valid data may be
accessed through the normal serial-interface read
operation.
FULLPD: (Default = 0) Complete Power-Down Bit.
FULLPD = 1 forces the part into a complete power-down
condition, which includes the clock oscillator. The serial
interface continues to operate. The part requires a hard-
ware reset to recover correctly from this condition.
Note: Changing the reserved bits in the special-func-
tion register from the default status of all 0s will select
one of the reserved modes and the part will not operate
as expected. This register is a write-only register.
However, in the event that this register is mistakenly
read, clock 24 bits of data out of the part to restore it to
the normal interface-idle state.
The three transfer-function registers control the method
used to map the input voltage to the output codes. All
of the registers have the same format. The mapping of
control registers to associated channels depends on
the mode of operation and is affected by the state of
M1, M0, DIFF, and SCAN (Tables 8, 9, and 10).
U/B
0
0
0
RESERVED BITS
D3
0
0
0
Special Function Register (Write-Only)
OFFSET CORRECTION
D2
0
0
0
Transfer-Function Registers
D1
0
0
0
FULLPD
(LSB)
(LSB)
D0
0
0