73M2901CE-IMR/F Maxim Integrated Products, 73M2901CE-IMR/F Datasheet - Page 22

• Manufacturer Part Number: 73M2901CE-IMR/F
• Description: IC MODEM 3.3V V.22BIS 32-QFN
• Manufacturer: Maxim Integrated Products

Specifications of 73M2901CE-IMR/F

• Data Format: V.21, V.22, V.23, Bell 103, Bell 212A
• Baud Rates: 300 ~ 9.6k
• Interface: Serial
• Voltage - Supply: 2.7 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 32-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

-To use the programmable termination:
S103+1
73M2901CE Data Sheet
7.2 Reference Design Using Traditional Hardware Line Monitoring
-This version supports only:
---Ring-E
---PPU-E
---LIU-E
-Keep analog and digital power and
ground separate up to J1 connector.
-Keep Vref and Vbg traces away from digital
traces, especially clocks. Keep traces short and
connect Vref and Vbg caps to analog ground.
-All resistors 0603 footprint except R25 which is
1206
-EMIT4033 is required for Austalia only;
the non-encapsulated MIT4033 can be
used for designs not requiring Austalian
operation.
Note: A termination MUST be programmed
or no termination will be activated.
22
For all: S102-3, S104-1, S95-128, S110-64
600 Ohm termination: S101+1, S101-2, S103-1
CTR-21 termination: S101-1, S101+2, S103-1
Australian termination: S101-1, S101-2,
J1
VCC3_3A
NLV32T-4R7J-PF
10
9
8
7
6
5
4
3
2
1
NLV32T-4R7J-PF
L4
RXDB
DTRB
TXDB
RIB
DCDB
DSRB
CTSB
RTSB
L3
VCC3_3D
0.1uF
C11
AUST
RELAY B
VCC3_3
+ C12
25
26
27
28
29
30
31
32
3.3uF
U1A
VPD
RXD
RXCLK
DTR
USR20
RING
RELAY
RI
Figure 4: 73M2901CE Worldwide Demo Board: Daughter Board Schematic
3.3uF
C5
C2
27pF
+
VCC3_3D
11.0592 MHz
Y 1
RESET
VREF
+
TXAP
TXAN
VNA
VBG
RXA
VPA
C13
3.3uF
C6
US600
CTR-21
0.1uF
16
15
14
13
12
11
10
9
C3
33pF
C14
0.1uF
VREF
TXAP
TXAN
RESET
VCC3_3
2901CE_QFN/TQFP32
VCC3_3D
C7
0.1uF
RXA
VBG
+
VCC3_3D
C1
R1
C8
0.1uF
10uF
10K
+ C9
10uF
100
R17
C10
0.1uF
VCC3_3A
R24
C20 150nF
C25 115nF
R26
C4
0.002uF(NC)
750
R27
820
R2
2K(NC)
420
R16
100
AUST
US600
U2C
U2B
U2A
11
4
1
R13
21K
74LVC4066D
74LVC4066D
74LVC4066D
R15
5.1K
C24
SOIC14
3.3uF
HOOK
VCC3_3
3
10
2
CTR-21
C26
82nF
VCC3_3D
R20
20K
3
4
T1
Sumida
EMIT4033
2
1
MMSZ5248BT
C21
3.3uF, 25V
RS1G
18V
U4
TLP627
D1
D2
R8
30K
C18
0.22uF
250V
R25
18
1/2W
MMBTA06
1
BCP-56
Q3
RING/CIDdetection
2
R9
30K
Q1
HD04
BR1
-
B
R23
33K
MMBTA06
R12
62K
Q2
1
+
+
C19
D3
MMSZ52C2V4S
C22
3.3uF, 16V
0.22uF
250V
1
B
2
TISP4350T3BJR
NLV32T-4R7J-PF
NLV32T-4R7J-PF
C28
220pF, 3kV
Bourns
Thy ristor
DS_2901CE_031
.047uF
C27
R28
47K
L2
C29
220pF, 3kV
L1
E1
Rev. 3.4
F1
MF-R015/600
Bourns
PTC f use
J2
RJ-11
4
3
2
1