U4255BM-M Datasheet, PDF (21/32 Pages) ATMEL Corporation – AM / FM RECEIVER IC

U4255BM-M
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
6.3 3^rd-order intercept
point
1, 2
IP3_FMmix
120
dBmV
6.4 Noise figure (DSB)
Generator resistance
200 W
43, 44
NF_FMmix
10
dB
6.5 Input resistance
1, 2
1.6
kW
6.6 Input capacitance
Pin 2 AC-grounded
1
5
pF
6.7 Maximum differential V_S = 8.5 V
output vltage
43, 44
12
Vpp
6.8 Output resistance
43, 44
100
kW
7 1^st IF FM Amplifier, FM Mode (Bit 92 = 1, Bit 93 = 0)
7.1 Minimum voltage gain Bits 89, 90, 91 = 0
38, 30
19
21
23
dB
7.2 Temperature
coefficient of gain
Bit 66 = 0
TK_min
0.039
dB/K
7.3 Temperature
coefficient of gain
Bit 66 = 1
TK_max
0.044
dB/K
7.4 Input resistance
Pin 39 AC-grounded
38
270
330
400
W
7.5 Input capacitance
Pin 39 AC-grounded
38
5
pF
7.6 Output resistance
30
8 1^st IF AM Amplifier, AM Mode (Bit 92 = 0, Bit 93 = 1)
270
330
400
W
8.1 Maximum voltage
gain
330 W load at Pin 30
30, 33
16
dB
8.2 Gain control range
26
dB
8.3 Noise figure
Generator resistance
2.5 kW
NF_IFAM
20
dB
8.4 Input resistance
33
10
kW
8.5 Input capacitance
Pin 39 AC-grounded
33
1
pF
8.6 Output resistance
9
2^nd Mixer
30
270
330
400
W
9.1 FM supply current
Bit 92 = 1, Bit 93 = 0 23, 24
10
14
16
mA
9.2 AM/WB supply
current
Bit 92 = 0, Bit 93 = 1
23, 24
8
10
12
mA
9.3 Conversion
conductance
26, 23,
24
2
mS
9.4 Noise figure (SSB)
Generator resistance
330 W (Pin 26)
23, 24
NF_Mix2
23
dB
9.5 3^rd-order input
intercept point
26
IP3_Mix2
132
dBµV
9.6 AM/WB output
resistance
Bit 92 = 0, Bit 93 = 1
23, 24
100
kW
9.7 Maximum differential V_S = 8.5 V
output voltage
23, 24
12
Vpp
AM/WB
*) Type means: A =100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
Type*
C
C
D
D
D
D
A
D
D
D
D
D
D
D
C
D
D
D
A
D
D
C
C
D
D
21
4519C–AUDR–07/02