Rainbow Electronics MAXQ7667 - Manual (Page 10)

MAXQ7667
16-Bit, RISC, Microcontroller-Based,
Ultrasonic Distance-Measuring System
10 ______________________________________________________________________________________
SAR ADC GAIN ERROR
vs. TEMPERATURE
MAXQ7667 toc08
TEMPERATURE ( °C)
GAIN ERROR (mV)
0 75 25 -25 100 50
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)
3072 2048 1024
0
-0.5
1.5
-1.0
1.0
-1.5
0.5
2.0
-2.0
0 4096 2560 1536 512 3584
SAR ADC DNL vs. CODE
MAXQ7667 toc10
CODE
DNL (LSB)
3072 2048 1024
0
-0.5
1.5
-1.0
1.0
-1.5
0.5
2.0
-2.0
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)
0 25 100 75
2.53
2.51
2.49
2.47
2.55
2.45
-50 125 50 -25
SUPPLY BROWNOUT THRESHOLDS
vs. TEMPERATURE
MAXQ7667 toc13
TEMPERATURE ( °C)
SUPPLY THRESHOLD (V)
25 100 0 -25 75
4.5
4.0
3.5
3.0
2.5
5.0
2.0
-50 125 50
DVDDIO INTERRUPT
AVDD INTERRUPT
DVDD INTERRUPT
DVDD RESET
TEMPERATURE ( °C)
25 100 0 -25 75 -50 125 50
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.)