MAX1464AAI+T Datasheet MAX1464AAI+T, MAX1464AAI+ | P34-P36

MAX1464

Low-Power, Low-Noise Multichannel

Sensor Signal Processor

34 ______________________________________________________________________________________

BIASn[2:0]

FRACTION

OF FULL

BIAS

CURRENT

MAXIMUM

ADC CLOCK

FREQUENCY

(Hz)

CLKn[2:0]

000 1/8 125k 011

001 2/8 250k 011

010 3/8 250k 010

011 4/8 500k 010

100 5/8 500k 001

101 6/8 500k 001

110 7/8 1M 000

111 8/8 1M 000

Table 19. ADC Bias Current (BIASn[2:0],

Where n = 1, 2, or T)

REFn[1:0] ADC REFERENCE

00 V

01 2 x V

REF

(external)

1X 4 x V

(internal bandgap)

Table 20. ADC Reference Voltage Source

(REFn[1:0], Where n = 1 or 2)

MAX1464

Low-Power, Low-Noise Multichannel

Sensor Signal Processor

______________________________________________________________________________________ 35

DOP CONFIGURATION

PWRDAC

PWROP

SELDAC

SELPWM

ENDAC

ENPWM

BUF

DAC OFF, PWM OFF, op amp OFF. 0 0 X X 0 0 X

DAC OFF, PWM OFF, op amp ON. AMPnP and

AMPnM routed to LG op amp.

010X000

DAC OFF, PWM OFF, op amp ON. LG op amp

configured as unity-gain buffer.

010X001

DAC OFF, PWM OFF, op amp ON. AMPnP and

AMPnM routed to SM op amp.

011X000

DAC OFF, PWM OFF, op amp ON. SM op amp

configured as unity-gain buffer.

011X001

DAC OFF, PWM ON, op amp OFF. PWM output on

OUTnSM. AMPnP and AMPnM disabled.

000001X

DAC OFF, PWM ON, op amp OFF. PWM output on

OUTnLG. AMPnP and AMPnM disabled.

000101X

DAC OFF, PWM ON, op amp ON. AMPnP and AMPnM

routed to LG op amp. PWM output on OUTnSM.

0100010

DAC OFF, PWM ON, op amp ON. LG op amp

configured as unity-gain buffer. PWM output on

OUTnSM.

0100011

DAC OFF, PWM ON, op amp ON. AMPnP and AMPnM

routed to SM op amp. PWM output on OUTnLG.

0111010

DAC OFF, PWM ON, op amp ON. SM op amp

configured as unity-gain buffer. PWM output on

OUTnLG.

0111011

DAC ON, PWM OFF, op amp OFF. DAC output on

OUTnSM. AMPnP and AMPnM disabled.

100X10X

DAC ON, PWM OFF, op amp OFF. DAC output on

OUTnLG. AMPnP and AMPnM disabled.

101X10X

DAC ON, PWM OFF, op amp ON. DAC output on

OUTnSM. AMPnP and AMPnM routed to LG op amp.

110X100

DAC ON, PWM OFF, op amp ON. DAC output on

OUTnSM. LG op amp configured as unity-gain buffer.

110X101

DAC ON, PWM OFF, op amp ON. DAC output on

OUTnLG. AMPnP and AMPnM routed to SM op amp.

111X100

DAC ON, PWM OFF, op amp ON. DAC output on

OUTnLG. SM op amp configured as unity-gain buffer.

111X101

DAC ON, PWM ON, op amp OFF. DAC output on

OUTnSM. PWM output on OUTnLG. AMPnP and

AMPnM disabled.

1X0111X

DAC ON, PWM ON, op amp OFF. DAC output on

OUTnLG. PWM output on OUTnSM. AMPnP and

AMPnM disabled.

1X1011X

Table 21. DOPn Configuration Options

MAX1464

Low-Power, Low-Noise Multichannel

Sensor Signal Processor

36 ______________________________________________________________________________________

BIT NAME DESCRIPTION

15–9 — Unused.

8 SELPWM1 Select PWM1 output: 1 = OUT1LG, 0 = OUT1SM.

7–5 — Unused.

4 SELDAC1 Select DAC1 output: 1 = OUT1LG (large op-amp buffer), 0 = OUT1SM (small op-amp buffer).

3–1 — Unused.

0 SELREF1 Select voltage reference for DAC1: 0 = V

, 1 = 2 x V

REF

Table 24. DOP1_Config (Address = 12h)

BIT NAME DESCRIPTION

15–5 — Unused.

4 ENPWM2 Enable pulse-width modulator 2: 1 = PWM2 active, 0 = PWM2 inactive.

3–1 — Unused.

0 ENDAC2 Enable digital-to-analog converter 2: 1 = DAC2 active, 0 = DAC2 inactive.

Table 25. DOP2_Control (Address = 14h)

NAME ADDRESS DESCRIPTION POR VALUE

DOP1_Data 10h DAC1/PWM1 input data. 0000

DOP1_Control 11h Initiate DAC1 and/or PWM1 conversions. 0000

DOP1_Config 12h DAC1/PWM1 output and DAC 1 reference selection. 0000

DOP2_Data 13h DAC2/PWM2 input data. 0000

DOP2_Control 14h Initiate DAC2 and/or PWM2 conversions. 0000

DOP2_Config 15h DAC2/PWM2 output and DAC 2 reference selection. 0000

OpAmp_Config 30h Settings for op amps in DOPn modules. 0000

Table 22. DOP Module Registers

BIT

NAME

DESCRIPTION

15–5 — Unused.

4 ENPWM1 Enable pulse-width modulator 1: 1 = PWM1 active, 0 = PWM1 inactive.

3–1 — Unused.

0 ENDAC1 Enable digital-to-analog converter 1: 1 = DAC1 active, 0 = DAC1 inactive.

Table 23. DOP1_Control (Address = 11h)

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P24 P25-P27 P28-P30 P31-P33 P34-P36 P37-P39 P40-P42 P43-P45 P46-P47

MAX1464AAI+T

Mfr. #:

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Manufacturer:

Maxim Integrated

Description:

16-bit Microcontrollers - MCU Low-Pwr/Nse MultiCh Sensor Signal Prcssr

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MAX1464AAI+T

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