T4260-ILQH Atmel, T4260-ILQH Datasheet - Page 17

• Manufacturer Part Number: T4260-ILQH
• Description: IC AM/FM FRONT END W/PLL 44SSOP
• Manufacturer: Atmel

Specifications of T4260-ILQH

• Frequency: AM, FM
• Modulation Or Protocol: AM, FM
• Applications: AM/FM Radio Receiver
• Current - Receiving: 85mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 8 V ~ 10 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Sensitivity: -
• Memory Size: -
• Data Rate - Maximum: -

10.8
10.9
4528N–AUDR–11/09
PLL
HCDEL
The PLL can switch off by bit 4 = 0. In this case, the N-Divider input signal is internally connected
to ground.
Table 10-10. PLL Mode
There are two registers, HCDEL 1 (bits 20 and 21) and HCDEL 2 (bits 22 and 23), to control the
delay time of the high-current charge pump and to deactivate them. bit 18 (HCDEL) determines
whether register HCDEL 1 or 2 is used.
Table 10-11. High-current Charge Pump Delay Time Register
If bits 20 and 21 (HCDEL 1) or bits 22 and 23 (HDCEL 2) are both set to 0, then the high-current
charge pump is deactivated. Otherwise, the delay time can be selected as described in
10-12.
Table 10-12. Delay Time of HCDEL Register
High-current Charge Pump
Delay time 10 ns
Delay time 15 ns
Delay time 5 ns
HCDEL 1/2 Select Mode
OFF
PLL ON/OFF
PLL OFF
HCDEL 1
HCDEL 2
PLL ON
B21/B23
0
0
1
1
HCDEL (B18)
B4
0
1
0
1
B20/B22
0
1
0
1
T4260
Table
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