ATR4258 Datasheet, PDF (27/38 Pages) ATMEL Corporation – AM/FM RECEIVER IC

ATR4258
Electrical Characteristics (Continued)
Test conditions (unless otherwise specified): V_S = 8.5 V, T_amb = 25°C
No. Parameters
Test Conditions
Pin
Symbol Min.
Typ.
Max.
Unit
Bit 7 = 1,
14.2 Mute gain
FM dev. = ±75 kHz,
11
f_mod = 1 kHz
14.3 Output resistance
Small signal
11
-65
-50
dB
60
Ω
15 Search Stop Detector, INT Output
15.1
LOW saturation
voltage
21
0
0.5
V
15.2
LOW output
resistance
21
0.3
kΩ
15.3
HIGH saturation
voltage
21
4.5
4.8
5.25
V
15.4
HIGH output
resistance
21
1
kΩ
16 Deviation Sensor, FM Mode (Bit 92 = 1, Bit 93 = 0)
16.1 Offset voltage
FM dev. = ±0 kHz
FM demodulator
31
adjusted
0.2
V
16.2 Output voltage
FM dev. = ±75 kHz,
f_mod = 1 kHz
31
1.7
2.0
2.5
V
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 Output voltage
60 dBµV at pin 33
9
0.8
1.3
1.8
V
17.2 Output voltage
Unmodulated signal
100 dBµV at pin 33
9
2.8
3.4
3.9
V
Field Strength Sensor, AM Mode (Bit 92 = 0, Bit 93 = 1, Bit 80 = 1, Bit 18 to 21 = 0)
17.3
Output voltage LOW
field strength
60 dBµV at pin 28
9
1.5
1.8
2.1
V
17.4
Output voltage HIGH
field strength
94 dBµV at pin 28
9
3.0
3.3
3.6
V
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
18.2 Output voltage
AM modulation depth
= 60%,
f_mod = 20 kHz,
40
60 dBµV at pin 1
1.5
1.9
2.4
V
*) Type means: A =100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
Type*
A
D
A
D
A
D
C
C
A
A
A
A
A
A
27
4838A–AUDR–10/04