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ATR4258
8. Electrical Characteristics (Continued)
Test conditions (unless otherwise specified): V S = 8.5V, T amb = 25°C
No.
Parameters
Test Conditions
Pin
Symbol
Min.
Typ.
Max.
Unit
Type*
15
Search Stop Detector, INT Output
15.1
15.2
LOW saturation voltage
LOW output resistance
21
21
0
0.3
0.5
V
k Ω
A
D
15.3
15.4
HIGH saturation voltage
HIGH output resistance
21
21
4.5
4.8
1
5.25
V
k Ω
A
D
16
Deviation Sensor, FM Mode (Bit 92 = 1, Bit 93 = 0)
FM dev. = ±0 kHz
16.1
Offset voltage
FM demodulator
31
0.2
V
C
adjusted
16.2
Output voltage
FM dev. = ±75 kHz,
f mod = 1 kHz
31
1.7
2.0
2.5
V
C
17
Field Strength Sensor, FM Mode (Bit 92 = 1, Bit 93 = 0, Bit 89 to 91 = 0, Bit 80 = 0, Bit 18 to 21 = 0)
17.1
17.2
Output voltage
Output voltage
60 dBμV at pin 33
Unmodulated signal
100 dBμV at pin 33
9
9
0.8
2.8
1.3
3.4
1.8
3.9
V
V
A
A
Field Strength Sensor, AM Mode (Bit 92 = 0, Bit 93 = 1, Bit 80 = 1, Bit 18 to 21 = 0)
17.3
17.4
Output voltage LOW
field strength
Output voltage HIGH
field strength
60 dBμV at pin 28
94 dBμV at pin 28
9
9
1.5
3.0
1.8
3.3
2.1
3.6
V
V
A
A
18
Multipath Sensor, FM Mode (Bit 92 = 1, Bit 93 = 0)
18.1
Offset voltage
Unmodulated signal,
60 dBμV at pin 1
40
0
200
mV
A
AM modulation depth =
18.2
Output voltage
60%,
f mod = 20 kHz, 60 dBμV
40
1.5
1.9
2.4
V
A
at pin 1
19
Adjacent Channel Sensor, FM Mode (Bit 92 = 1, Bit 93 = 0), Bit 4 = 0 (Default BW Setting)
19.1
Offset voltage
Unmodulated signal
10
200
mV
C
19.2
19.3
Output voltage
AM mod. 10%
f mod = 100 kHz
AM mod. 60%
f mod = 100 kHz
10
1.2
0.3
1.9
0.6
2.5
V
A
20
3-wire Bus
20.1
20.2
Input voltage LOW
Input voltage HIGH
17, 18,
19
17, 18,
19
2.7
0.8
V
V
D
D
20.3
20.4
Leakage current
Clock frequency
V = 0V, 5V
17, 18,
19
18
10
1.0
μA
MHz
D
D
Period of CLK
20.5
HIGH
LOW
t H
t L
250
250
ns
ns
D
*) Type means: A =100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
27
4838B–AUDR–05/05
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