MAXQ7667AACM/V+T【PDF 2/40 页】IC MCU-BASED DAS 16BIT 48-LQFP

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MAXQ7667

16-Bit, RISC, Microcontroller-Based,

Ultrasonic Distance-Measuring System

______________________________________________________________________________________

SAR ADC GAIN ERROR

vs. TEMPERATURE

MAXQ7667

toc08

TEMPERATURE (

°C)

GAIN

ERROR

(mV)

075

-25

100

2.0

1.0

1.5

2.5

3.0

0.5

-50

125

VAVDD = 3.3V

VAVDD = 3.6V

VAVDD = 3V

SAR ADC INL vs. CODE

MAXQ7667

toc09

CODE

INL

(LSB)

3072

2048

1024

-0.5

1.5

-1.0

1.0

-1.5

0.5

2.0

-2.0

04096

2560

1536

512

3584

SAR ADC DNL vs. CODE

MAXQ7667

toc10

CODE

DNL

(LSB)

3072

2048

1024

-0.5

1.5

-1.0

1.0

-1.5

0.5

2.0

-2.0

4096

2560

1536

512

3584

REFERENCE OUTPUT VOLTAGE

vs. SUPPLY VOLTAGE

MAXQ7667

toc11

AVDD SUPPLY VOLTAGE (V)

REF

OUTPUT

VOLTAGE

(V)

3.5

3.3

3.2

2.516

2.515

2.519

2.514

2.518

2.513

2.517

2.520

2.512

3.0

3.6

3.1

3.4

REFERENCE OUTPUT VOLTAGE

vs. TEMPERATURE

MAXQ7667

toc12

TEMPERATURE (

°C)

REF

OUTPUT

VOLTAGE

(V)

025

100

2.53

2.51

2.49

2.47

2.55

2.45

-50

125

-25

SUPPLY BROWNOUT THRESHOLDS

vs. TEMPERATURE

MAXQ7667

toc13

TEMPERATURE (

°C)

SUPPLY

THRESHOLD

(V)

100

-25

4.5

4.0

3.5

3.0

2.5

5.0

2.0

-50

125

DVDDIO INTERRUPT

AVDD INTERRUPT

DVDD INTERRUPT

DVDD RESET

TEMPERATURE (

°C)

100

-25

-50

125

REGULATOR OUTPUT VOLTAGE

vs. TEMPERATURE

MAXQ7667

toc14

REGULATOR

OUTPUT

VOLTAGE

(V)

4.5

4.0

3.5

3.0

2.5

5.0

2.0

DVDDIO

AVDD

DVDD

Typical Operating Characteristics (continued)

(VDVDDIO = +5V, VAVDD = +3.3V, VDVDD = +2.5V, fSYSCLK = 16MHz, burst frequency = bandpass frequency = 50kHz, TA = +25°C,

unless otherwise noted.)

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