MLX90129_12 datasheet(8/60 Pages) MELEXIS

Part #	MLX90129

Description	13.56MHZ SENSOR TAG / DATALOGGER IC

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Manufacturer	MELEXIS [Melexis Microelectronic Systems]

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8 / 60 page

MLX90129

13.56MHZ SENSOR TAG / DATALOGGER IC

3901090129

Page 8 of 60

Data Sheet

Rev 009

Jun/12

Parameter

Conditions / Comment

Min

Typ

Max

Units

PROGRAMMABLE-GAIN AMPLIFIER PGA1

Gain accuracy

Code PGA1gain[3:0] =

0000 (gain=8) -> 1010 (gain=75)

95

100

105

%typ

PROGRAMMABLE-GAIN AMPLIFIER PGA2

Gain accuracy

Code PGA2gain[2:0] =

000 (gain=1) -> 111 (gain=8)

95

100

105

%typ

PGA1 + PGA2 + DAC

Gain range

8

600

V/V

Sensor offset trimming

range

(= offset max of the sensor)

-Vref /32

+Vref

/32

V

Sensor offset trimming

step

8-bits DAC (7 bits + sign)

Ratio-metric, to cancel the offset of the

sensor

Vref /128

V

Differential input range

Gain (PGA) = 8

(if higher, PGA_Dir should be Vref/2

divided by the gain)

Vref /16

V

ADC differential input

range

½.Vref

V

DAC (differential outputs)

Resolution

7 bits + 1 bit sign

8

bit

INL

0

0.5

lsb

DNL

0

0.5

lsb

Parameter

Conditions / Comment

Min

Typ

Max

Units

BRIDGE SUPPLIES & REFERENCES

Reference serial

resistance (Rv1, Rv2)

6 bits-programmable:

Min

Max

0.5

63.5

kΩ

Serial resistance

accuracy

Above code 0b000111 (7.5 kΩ)

80

100

120

%typ

Serial resistance step

1

kΩ

Matching between Rv1

and Rv2

Above code 0b000111 (7.5 kΩ)

1

%

INTERNAL TEMPERATURE SENSOR

Full scale

-40

+105

°C

Output range

∆

Temp = 145°C,

-

155

-

mV

Offset

∆

Vout at T = 25°C

45

mV

Sensitivity

∆

Vout / ∆Temp

-

1.06

-

mV/°C

Non-linearity (*)

∆

Temp = 145°C

-

±2.65

-

mV

(*) The internal temperature sensor requires a calibration. On the full range the calibration allows an accuracy

of ±2.5°C. This can be improved within a reduced temperature range (e.g. ±1°C within -30 and 30°C), or by

using a remote (external) temperature probe (+/-0.5°over the full range)

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