Datasheet

MAXQ7667
16-Bit, RISC, Microcontroller-Based,
Ultrasonic Distance-Measuring System
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REG2P5 REGULATOR OUTPUT VOLTAGE
vs. LOAD CURRENT
MAXQ7667 toc17
REG2P5 LOAD CURRENT (mA)
REG2P5 REGULATOR OUTPUT VOLTAGE (V)
6040
2.5
2.0
1.5
1.0
0.5
3.0
0
012010020 80
RC OSCILLATOR FREQUENCY
vs. TEMPERATURE
MAXQ7667 toc18
TEMPERATURE (°C)
RC OSCILLATOR FREQUENCY (MHz)
07525-25 10050
13.5
12.5
13.0
14.0
14.5
15.0
12.0
-50 125
V
DVDD
= 2.25V
V
DVDD
= 2.75V
V
DVDD
= 2.50V
DVDDIO REGULATOR OUTPUT VOLTAGE
vs. LOAD CURRENT
MAXQ7667 toc15
DVDDIO LOAD CURRENT (mA)
DVDDIO REGULATOR OUTPUT VOLTAGE (V)
10050
5.0
4.5
4.0
3.5
5.5
3.0
0 200150
DRAIN = 8V
DRAIN = 14V
EXTERNAL VOLTAGE SOURCE CONNECTED
TO THE DRAIN OF EXTERNAL PASS
TRANSISTOR BSP129
REG3P3 REGULATOR OUTPUT VOLTAGE
vs. LOAD CURRENT
MAXQ7667 toc16
REG3P3 LOAD CURRENT (mA)
REG3P3 REGULATOR OUTPUT VOLTAGE (V)
6040
3.0
2.5
2.0
1.5
1.0
0.5
3.5
0
0 12010020 80
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.)