PLL For DTS

The TB2110FN is a high−speed PLL LSI built in a 2 modulus prescaler that can operate with a 1.5V power supply.

Each function is controlled via three serial bus lines, allowing you to configure a high−performance digital tuning system.

Features

• Due to a Bi−CMOS structure, the 1.5V power supply is stepped up and stabilized by a bipolar circuit to drive the CMOS section. Therefore, this chip is best suited for digital tuning system in headphone stereos.

• Built in a prescaler, this IC can operate with TV: 50~250MHz and FM: 40~150MHz (2 modulus type) for the FMIN input or at 0.5~40MHz for the AMIN input (2 modulus type or directly divided).

• Comes with a 20 bit programmable counter, two parallel output phase comparators, crystal oscillator, reference counter, and a DC / DC converter control circuit.

• The crystal oscillator (X’tal) used in this IC is a 75kHz resonator.

• The reference frequency can be selected from seven frequencies available. (ref = 1.0~25kHz)

• A 20 bit general−purpose counter is built in that can measure the IF and other frequencies.

• All device operations are controlled via three serial bus lines.

• Operating voltage range: VCC = 1.0~2.5V (Ta = −20~75°C)

• Package is SSOP24pin.