MAX1452 データシートの表示（PDF） - Maxim Integrated

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MAX1452

Low-Cost Precision Sensor Signal Conditioner

Maxim Integrated 

MAX1452

Low-Cost Precision Sensor

Signal Conditioner

Detailed Block Diagram

VDD

ISRC

VDD

FSO

DAC

VSS

RISRC

75kΩ

VSS

RSTC

75kΩ

FSOTC

BDR

INP

16-BIT

FSOTC

DAC

PHASE VSS

REVERSAL

MUX

FSOTC REGISTER

MUX

∑

x 26

16-BIT

±1

EEPROM

(LOOKUP PLUS CONFIGURATION DATA)

EEPROM ADDRESS USAGE

000H + 001H

:

OFFSET DAC LOOKUP TABLE

(176 x 16-BITS)

VDD

OFFSET

DAC

16-BIT

15EH + 15FH

160H + 161H

162H + 163H

164H + 165H

166H + 167H

168H + 169H

16AH + 16BH

16CH + 16DH

:

CONFIGURATION REGISTER SHADOW

RESERVED

OFFSET TC REGISTER SHADOW

RESERVED

FSOTC REGISTER SHADOW

CONTROL LOCATION REGISTER

USER STORAGE (52 BYTES)

VSS

19EH + 19FH

1A0H + 1A1H FSO DAC LOOKUP TABLE

:

(176 x 16-BITS)

VDD

2FEH + 2FFH

BANDGAP

TEMP

SENSOR

∑∆

8-BIT

LOOKUP

ADDRESS

DIGITAL

INTERFACE

VSS

PGA BANDWIDTH

3kHz 10%

PGA

∑

MUX

INM

VSS

INPUT REFERRED OFFSET

(COARSE OFFSET)

IRO (3, 2:0) OFFSET mV

±1

1,111

63

1,110

54

1,101

45

1,100

36

1,011

27

1,010

18

16-BIT

OFFSET

TC DAC

1,001

1,000

9

OTC REGISTER

VSS

0

0,000

0,001

0,010

0,011

0,100

0,101

0

-9

* INPUT REFERRED

-18

OFFSET VALUE IS

-27

PROPORTIONAL TO VDD.

VALUES GIVEN ARE FOR

-36

VDD = 5V.

-45

0,110

-54

0,111

-63

PROGRAMMABLE GAIN STAGE

PGA (3:0) PGA GAIN TOTAL GAIN

0000

1.5

39

0001

2.0

52

0010

2.5

65

0011

3.0

78

0100

3.5

91

0101

4.0

104

0110

4.5

117

0111

5.0

130

1000

5.5

143

1001

6.0

156

1010

6.5

169

1011

7.0

182

1100

7.5

195

1101

8.0

208

1110

8.5

221

1111

9.0

234

PGA BANDWIDTH 3kHz ± 10%

UNCOMMITTED OP AMP

PARAMETER

I/P RANGE

I/P OFFSET

O/P RANGE

NO LOAD

1mA LOAD

UNITY GBW

VALUE

VSS TO VDD

±20mV

VSS, VDD ±0.01V

VSS, VDD ±0.25V

10MHz TYPICAL

VDD

VSS

TEST

CLK1M

VDDF

UNLOCK

DIO

OUT

AMP-

AMPOUT

AMP+

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