Rainbow Electronics DS2152 - Manual (Page 58)

DS2152
031897 58/79
DS2152 EXTERNAL ANALOG CONNECTIONS Figure 14–1
1:1
1.15:1 (Rt = 0 Ohms) or
1.36:1 (Rt = 4.7 Ohms)
(larger winding toward
0.47 uF
(non–
polarized)
0 . 1 u F
0 . 1 u F
0 . 1 u F
+ 5 V
50 50
0.1 uF
Rt
Rt
0 . 0 1 u F
1.544 MHz
–or–
C1/C2
61
60
18
19
31
30
DS2152
T1 TRANSMIT
LINE
T1 RECEIVE
LINE
TTIP
TRING
RTIP
RRING
DVDD
DVSS
RVDD
RVSS
TVDD
TVSS
XTALD
MCLK
MCLK
XTALD
the network)
1.544 MHz
NOTES:
1. Resistor values are ± 1%.
2. The Rt resistors are used to protect the device from over–voltage.
3. See the Separate Application Note for details on how to construct a protected interface.
4. Either a crystal can be applied across the MCLK and XTALD pins or a TTL level clock can be applied to just
MCLK.
5. C1 and C2 should be 5 pF lower than two times the nominal loading capacitance of the crystal to adjust for
the input capacitance of the DS2152.