mc33411a Freescale Semiconductor, Inc, mc33411a Datasheet - Page 20

• Manufacturer Part Number: mc33411a
• Description: 900 Mhz Analog Cordless Phone Baseband With Compander
• Manufacturer: Freescale Semiconductor, Inc

–5.0
–5.0
–10
–15
–20
–25
–30
–35
–40
–45
–10
–20
–30
–40
–50
–10
–15
–20
–25
–30
–35
–40
20
–60
0
0
0
–60
“Comp Low Max Gain En” = 0
Maximum Gain = 21
–60
Programmable Compressor Maximum Gain
Figure 17. Tx Audio Compressor Response
V CC = 3.6 V
T A = 25 C
R6/8 = 0
Figure 15. Compressor Characteristic with
(Distortion & Amplitude, ALC off, Lim off)
V CC = 3.6 V
T A = 25 C
Figure 19. Tx Output Audio Response
–50
–50
–33
–30
–50
“Comp Low Max Gain En” = 1.0
Maximum Gain = 12
–40
–40
Tx Out
(Lim on, ALC off)
–40
V in > = –4.0 dBV, V out = 1.26 V pp
(rapidly changing limited signals)
C IN VOLTAGE (dBV)
MCI VOLTAGE (dBV)
–30
–30
–23.5
C IN (dBV)
–30
Compressor Transfer
–20
Distortion
–20
–20
V in = –16 dBV,
V out = –13 dBV
(slowly changing ALC signals)
–20
Distortion
–10
–10
–10
V in = –2.5 dBV,
V out = –10 dBV
0
0
0
MC33411A/B
10
10
4.0
3.0
2.0
1.0
0
14
12
10
8.0
6.0
4.0
2.0
0
–5.0
–5.0
–5.0
–10
–15
–20
–25
–30
–35
–40
–45
–10
–15
–20
–25
–30
–35
–40
–10
–15
–20
–25
–30
–35
–40
0
–60
0
–60
–60
0
Figure 16. Tx Audio Compressor Response
(Distortion & Amplitude, ALC off, Lim off)
V CC = 3.6 V
T A = 25 C
R6/8 = 1
V CC = 3.6 V
T A = 25 C
V CC = 3.6 V
T A = 25 C
Figure 18. Tx Output Audio Response
Figure 20. Tx Output Audio Response
–50
–50
–50
–40
–40
–40
(Lim off, ALC on)
(Lim & ALC off)
C IN VOLTAGE (dBV)
Tx Out
MCI VOLTAGE (dBV)
MCI VOLTAGE (dBV)
MOTOROLA RF/IF DEVICE DATA
Tx Out
–30
–30
–30
Compressor Transfer
Distortion
–20
–20
–20
Distortion
Distortion
–10
–10
–10
0
0
0
10
10
10
4.0
3.0
2.0
1.0
0
4.0
3.0
2.0
1.0
0
14
12
10
8.0
6.0
4.0
2.0
0