U4254BM-M Datasheet, PDF (8/14 Pages) ATMEL Corporation – Low-noise AM/FM Antenna Impedance Matching IC

Electrical Characteristics
V_S = 8 V, T_amb = 25° C, unless otherwise specified (see Figure 12 on page 9).
Parameters
Test Conditions
Pin
Symbol
Supply voltage
Supply currents
Reference voltage 1 output (I₁₂ = 0)
Reference voltage 2 output (I₅ = 0)
Temperature dependence of VREF2
AM Amplifier
14
V_S
14
I_S
12
V_Ref1
5
V_Ref2
5
V_Ref2/∆T
Input resistance
Input capacitance
Output resistance
Voltage gain
8
8
10
8, 10
R_AMIN
C_AMIN
R_OUT
a
S1 switched to 2
Output noise voltage (rms value)
B = 6 kHz
150 kHz to 300 kHz
10
V_N1
500 kHz to 6.5 kHz
V_N2
S2 switched to 1
2nd harmonic
f_AMIN = 500 kHz
Output voltage =
10
110 dBµV
FM Amplifier
Supply current limit
Input resistance
Output resistance
Power gain
I_AGC, I_AGCADJ = 0 A
f = 100 MHz
f = 100 MHz
f = 100 MHz
15
1
15
1, 15
I₁₅
R_FMIN
R_FMOUT
G
Output noise voltage
f = 100 MHz
B = 120 kHz
15
V_N
3rd-order output intercept
f = 100 MHz
15
AGC
AGC input voltage threshold
f = 100 MHz
15
S2 switched to 1;
AGC threshold DC
V_th1
current is 10 µA at
pin 4
AGC input voltage threshold
f = 100 MHz,
15
S2 switched to 2;
AGC threshold DC
V_th2
current is 10 µA at
pin 4
AGC output current
AGC active
I_AGC
Min.
7.2
3.5
5.1
2.3
Typ.
8
4.8
5.4
2.6
-1
470
125
0.85
-2
-6
-65
33
50
50
5
0
132
96
106
Max.
8.8
5.6
5.7
2.8
Unit
V
mA
V
V
mV/K
kΩ
10
pF
Ω
dBµV
dBµV
dBc
35
mA
Ω
Ω
dB
dBµV
dBµV
dBµV
dBµV
1.2
mA
8 U4254BM-M
4772B–AUDR–11/03