maxq7667 Maxim Integrated Products, Inc., maxq7667 Datasheet - Page 11

• Manufacturer Part Number: maxq7667
• Description: 16-bit, Risc, Microcontroller-based, Ultrasonic Distance-measuring System
• Manufacturer: Maxim Integrated Products, Inc.

(V
unless otherwise noted.)
DVDDIO
= +5V, V
5.5
5.0
4.5
4.0
3.5
3.0
3.0
2.5
2.0
1.5
1.0
0.5
0
AVDD
0
0
REG2P5 REGULATOR OUTPUT VOLTAGE
DVDDIO REGULATOR OUTPUT VOLTAGE
______________________________________________________________________________________
EXTERNAL VOLTAGE SOURCE CONNECTED
TO THE DRAIN OF EXTERNAL PASS
TRANSISTOR BSP129
Ultrasonic Distance-Measuring System
= +3.3V, V
20
DVDDIO LOAD CURRENT (mA)
REG2P5 LOAD CURRENT (mA)
50
vs. LOAD CURRENT
vs. LOAD CURRENT
40
16-Bit, RISC, Microcontroller-Based,
DVDD
100
DRAIN = 14V
60
DRAIN = 8V
= +2.5V, f
80
150
100
Typical Operating Characteristics (continued)
SYSCLK
200
120
= 16MHz, burst frequency = bandpass frequency = 50kHz, T
15.0
14.5
14.0
13.5
13.0
12.5
12.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
-50
0
REG3P3 REGULATOR OUTPUT VOLTAGE
-25
RC OSCILLATOR FREQUENCY
20
V
REG3P3 LOAD CURRENT (mA)
DVDD
vs. TEMPERATURE
vs. LOAD CURRENT
0
TEMPERATURE (°C)
40
= 2.75V
V
25
DVDD
60
= 2.50V
50
80
V
75
DVDD
100
100
= 2.25V
125
120
A
= +25°C,
11