The Fujitsu MB15F72UL is a serial input Phase Locked Loop (PLL) frequency synthesizer with a 1300 MHz and a 350 MHz prescalers. A 64/65 or a 128/129 for the 1300 MHz prescaler, and a 8/9 or a 16/17 for the 350 MHz prescaler can be selected for the prescaler that enables pulse swallow operation. The BiCMOS process is used, as a result a supply current is typically 2.5 mA at 2.7 V. The supply voltage range is from 2.4 V to 3.6 V. A refined charge pump supplies well-balanced output current with 1.5 mA and 6 mA selectable by serial data. The data format is the same as the previous one MB15F02SL, MB12F72SP. Fast locking is achieved for adopting the new circuit. The new package (BCC20) decreases a mount area of MB15F72UL more than 30% comparing with the former BCC16 (for dual PLL) . MB15F72UL is ideally suited for wireless mobile communications, such as CDMA.
The MB15F72UL is a dual‑serial‑input phase‑locked‑loop (PLL) frequency synthesizer designed for wireless mobile communications such as CDMA. It offers a 1300 MHz RF synthesizer and a 350 MHz IF synthesizer with selectable dual‑modulus prescalers.
Key features include low‑power operation (typical 2.5 mA at 2.7 V), software‑selectable charge‑pump currents (1.5 mA/6 mA), a power‑saving mode with 0.1 µA consumption, and a compact 20‑pin BCC20 plastic TSSOP package. The device operates from –40 °C to +85 °C and supports a wide range of programmable dividers.
| Supply voltage range | 2.4 V to 3.6 V |
|---|---|
| Typical supply current | 2.5 mA at 2.7 V |
| RF synthesizer maximum frequency | 1300 MHz |
| IF synthesizer maximum frequency | 350 MHz |
| Package type | 20‑pin plastic TSSOP (BCC20) |
| Operating temperature range | -40 °C to +85 °C |
| Charge‑pump current (selectable) | 1.5 mA / 6.0 mA |
| Power‑saving mode current | 0.1 µA (typical) |
The device operates with a supply voltage from 2.4 V to 3.6 V.
Typical supply current is 2.5 mA when powered at 2.7 V.
It is supplied in a 20‑pin plastic TSSOP (BCC20) package.
The device is rated for –40 °C to +85 °C.