MAX11410 Datasheet, PDF (40/95 Pages) Maxim Integrated Products – 24-Bit Multi-Channel Low-Power

MAX11410
24-Bit Multi-Channel Low-Power
1.9ksps Delta-Sigma ADC with PGA
PD (0x00)
This register selects the power-down state to be executed. While in a sequence, executing a power-down command
will cause the sequencer to stop and issue a SEQ_RDY status. In standby or sleep mode, writing an asynchonous start
command (WAIT_START, CONV_START, SEQ_START, WAIT_START), will initiate wakeup, causing the PD state to
change to normal mode. During wakeup, the PD register will read '10' and transition to '00' after the wakeup timer expires.
Asynchronous start operations will be delayed until the wakeup timer expires.
BIT
7
6
5
4
3
2
1
0
Field
—
—
—
—
—
—
PD[1:0]
Reset
—
—
—
—
—
—
0x2
Access Type
—
—
—
—
—
—
Write, Read
BITFIELD
BITS
PD
1:0
DESCRIPTION
DECODE
00: Normal mode
01: Standby mode—Powers down all analog circuity,
but not the internal voltage regulator
10: Sleep mode—Powers down all analog circuitry
including the internal voltage regulator (default)
11: Reset—all registers reset to POR state (Self
Clearing to 10)
CONV_START (0x01)
The CONV_START register initiates conversions, selects the type of conversion to be performed (CONV_TYPE), and
selects the register to which the conversion result will be written (DEST). Eight registers are available for ADC conversion
results. The three DEST bits select which of these registers the current conversion will be stored in. The CONV_TYPE
bits control what type of conversion is to be executed. If in PD: SLEEP or PD: STANDBY mode, writing to this register
changes the mode to PD: Normal mode and then initiates the conversion.
BIT
7
6
5
4
3
2
1
0
Field
—
DEST[2:0]
—
—
CONV_TYPE[1:0]
Reset
—
—
—
Access Type
—
Write, Read
—
—
Write, Read
BITFIELD
BITS
DEST
6:4
CONV_TYPE
1:0
DESCRIPTION
DECODE
000: Store result in DATA0
001: Store result in DATA1
010: Store result in DATA2
011: Store result in DATA3
100: Store result in DATA4
101: Store result in DATA5
110: Store result in DATA6
111: Store result in DATA7
00: Single conversion
01: Continuous conversions
10, 11: 1:4 Duty cycled conversions (modulator low-
power mode)
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