msm7557 Oki Semiconductor, msm7557 Datasheet - Page 12

• Manufacturer Part Number: msm7557
• Description: Single Chip Msk Modem With Compandor For Cordless Telephone
• Manufacturer: Oki Semiconductor

¡ Semiconductor
AC Characteristics
*1 Receive MSK signal is bit synchronous signal (modulated signal of alternating "0", "1" pattern).
Transmit
Carrier Frequency
Transmit
Carrier Level
Receive Carrier
Input Level
Bit Error Rate
Number of PLL Lock-in
Data Bits *1
Parameter
1200
2400
bps
bps
Symbol
V
B
f
f
V
V
f
f
M1
M2
S1
S2
OX
ER
IR
IR
Defined at
RAIO
Number of data bits
required for the PLL to
be locked in within the
phase difference of
22.5° or less
Number of data bits
required for the PLL to
be locked in within the
phase difference of
90° or less
SD = "1"
SD = "1"
R1 = R2
SD= "0"
SD= "0"
Condition
DYN = "0"
DYN = "1"
BR = "0"
BR = "1"
ME= "1"
ME= "1"
10 dB
11 dB
13 dB
8 dB
DYN = "0" : V
DYN = "1" : V
Min.
1199
1799
1199
2399
–32
–11
–3
—
—
—
—
—
—
DD
DD
= 2.7 V to 5.5 V, Ta = –30°C to 70°C
= 4.5 V to 5.5 V, Ta = –30°C to 70°C
1 ¥ 10
5 ¥ 10
1 ¥ 10
5 ¥ 10
1200
1800
1200
2400
Typ.
—
—
–9
–1
—
-3
-5
-3
-5
Max.
1201
1801
1201
2401
—
—
—
—
18
11
–7
+1
–2
MSM7557
Unit
dBV
—
bit
Hz
12/25