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MAXQ7667 Folha de dados(PDF) 9 Page - Maxim Integrated Products

Nome de Peças MAXQ7667
Descrição Electrónicos  16-Bit, RISC, Microcontroller-Based, Ultrasonic Distance-Measuring System
PDF  40 Pages
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Fabricante Electrônico  MAXIM [Maxim Integrated Products]
Página de início  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAXQ7667 Folha de dados(HTML) 9 Page - Maxim Integrated Products

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16-Bit, RISC, Microcontroller-Based,
Ultrasonic Distance-Measuring System
_______________________________________________________________________________________
9
BURST OUTPUT FREQUENCY
vs. TEMPERATURE
TEMPERATURE (
°C)
50
25
100
75
0
-25
49.96
49.97
49.98
49.99
50.00
50.01
50.02
50.03
50.04
50.05
49.95
-50
125
USING PLL
LOWPASS FILTER OUTPUT
vs. ECHO INPUT AMPLITUDE
ECHO INPUT AMPLITUDE (VP-P)
0.04
0.02
0.08
0.06
24,576
32,768
8192
16,384
40,960
49,152
57,344
65,536
0
0
0.10
PROGRAMMABLE ECHO GAIN = MINIMUM
LOWPASS FILTER OUTPUT
vs. ECHO INPUT FREQUENCY
ECHO INPUT FREQUENCY (kHz)
55
40
85
70
1000
100
10,000
100,000
10
25
100
PROGRAMMABLE ECHO GAIN = MINIMUM
ECHO INPUT AMPLITUDE = 20mVP-P
BANDPASS FILTER OUTPUT NOISE FLOOR
vs. BANDPASS FILTER CENTER FREQUENCY
FREQUENCY (kHz)
80
60
40
9
3
6
12
15
0
20
100
RECEIVE PATH GAIN AT MAXIMUM
TA = +105
°C
TA = +25
°C
TA = -40
°C
RECEIVE PATH RESPONSE TIME
(ECHO INPUT TO LOWPASS FILTER OUTPUT)
TIME (
µs)
400
200
800
600
6000
4000
10,000
2000
8000
14,000
12,000
16,000
0
0
1000
MINIMUM ECHO GAIN
20mVP-P ECHO AMPLITUDE
50kHz ECHO FREQUENCY
250ksps
INPUT ON
INPUT OFF
LOWPASS FILTER OUTPUT RIPPLE vs. TIME
TIME (ms)
24
6
10
8
12,500
12,000
14,500
11,500
14,000
10,500
13,000
11,000
13,500
15,000
10,000
012
MINIMUM ECHO GAIN
20mVP-P ECHO AMPLITUDE
50kHz ECHO FREQUENCY
250ksps
SAR ADC OFFSET ERROR
vs. TEMPERATURE
TEMPERATURE (
°C)
075
25
-25
100
50
0.5
-0.5
0
1.0
1.5
2.0
-1.0
-50
125
VAVDD = 3.3V
VAVDD = 3.6V
VAVDD = 3V
Typical Operating Characteristics
(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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