Datasheet

MAXQ7667
16-Bit, RISC, Microcontroller-Based,
Ultrasonic Distance-Measuring System
10 ______________________________________________________________________________________
SAR ADC GAIN ERROR
vs. TEMPERATURE
MAXQ7667 toc08
TEMPERATURE (°C)
GAIN ERROR (mV)
07525-25 10050
2.0
1.0
1.5
2.5
3.0
0.5
-50 125
V
AVDD
= 3.3V
V
AVDD
= 3.6V
V
AVDD
= 3V
SAR ADC INL vs. CODE
MAXQ7667 toc09
CODE
INL (LSB)
307220481024
0
-0.5
1.5
-1.0
1.0
-1.5
0.5
2.0
-2.0
0409625601536512 3584
SAR ADC DNL vs. CODE
MAXQ7667 toc10
CODE
DNL (LSB)
307220481024
0
-0.5
1.5
-1.0
1.0
-1.5
0.5
2.0
-2.0
0 409625601536512 3584
REFERENCE OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
MAXQ7667 toc11
AVDD SUPPLY VOLTAGE (V)
REF OUTPUT VOLTAGE (V)
3.53.33.2
2.516
2.515
2.519
2.514
2.518
2.513
2.517
2.520
2.512
3.0 3.63.1 3.4
REFERENCE OUTPUT VOLTAGE
vs. TEMPERATURE
MAXQ7667 toc12
TEMPERATURE (°C)
REF OUTPUT VOLTAGE (V)
025 10075
2.53
2.51
2.49
2.47
2.55
2.45
-50 12550-25
SUPPLY BROWNOUT THRESHOLDS
vs. TEMPERATURE
MAXQ7667 toc13
TEMPERATURE (°C)
SUPPLY THRESHOLD (V)
25 1000-25 75
4.5
4.0
3.5
3.0
2.5
5.0
2.0
-50 12550
DVDDIO INTERRUPT
AVDD INTERRUPT
DVDD INTERRUPT
DVDD RESET
TEMPERATURE (°C)
25 1000-25 75-50 12550
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)
(V
DVDDIO
= +5V, V
AVDD
= +3.3V, V
DVDD
= +2.5V, f
SYSCLK
= 16MHz, burst frequency = bandpass frequency = 50kHz, T
A
= +25°C,
unless otherwise noted.)