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MAX1454

Precision Sensor Signal Conditioner

with Overvoltage Protection

ELECTRICAL CHARACTERISTICS (continued)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

ANALOG OUTPUT

Differential Signal Gain

Selectable in 32 steps

6 to 2048

V/V

PGA[4:0] = 00000bin

5.5

6

6.5

PGA[4:0] = 00101bin

12.5

14

15.5

PGA[4:0] = 01010bin

40

44

48

PGA[4:0] = 01100bin

58

64

70

PGA[4:0] = 01101bin

72

80

88

PGA[4:0] = 01110bin

86

96

106

PGA[4:0] = 01111bin

101

112

123

PGA[4:0] = 10000bin

130

144

158

PGA[4:0] = 10110bin

374

416

458

PGA[4:0] = 11100bin

1037

1152

1267

PGA[4:0] = 11111bin

1823

2048

2253

Output-Voltage Swing

No load

0.02

0.32

V

Output-Voltage Low

0.25

V

Output-Voltage High

0.55

V

Output Current Drive

Capability

Maintain DC output to 2mV error compared

to no load case (Note 4)

Q

1

mA

Output Source Current Limit

8

mA

Output Sink Current Limit

-8

mA

Output Impedance at DC

0.2

I

Output Offset Ratio

D

D

Offset DAC

0.9

1.2

V/V

Output Offset TC Ratio

D

D

Offset TC DAC

0.9

1.2

V/V

Step Response

(63% Final Value)

85

F

s

Maximum Capacitive Load

0.01

F

F

Noise at Output Pin

DC to 1kHz, source

impedance = 5kI

Gain = 36

0.5

Gain = 256

1.5

Gain = 512

3

Gain = 1024

6

Gain = 2048

12