This device has been transferred from Ampleon to Flip Electronics.
UHF power LDMOS transistor
A 600 W LDMOS RF power transistor for broadcast Doherty transmitter applications. The excellent ruggedness of this device makes it ideal for digital and analog transmitter applications.
Whitepaper Doherty Architectures in UHF
This White Paper explains different PA architectures which can be used in today’s UHF Broadcast industry.
In this paper a brief discussion will be given to explain these new Doherty architectures and to help customers finding the best solution for their transmitter. Ampleon’s transistor family BLF8XX can support these Doherty architectures.
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Features and benefits
- High efficiency
- High power gain
- Excellent ruggedness (VSWR ≥ 40 : 1 through all phases)
- Excellent thermal stability
- Integrated ESD protection
- One Doherty design covers the full bandwidth from 470 MHz to 860 MHz
- Internal input matching for ease of use
- Compliant to Directive 2002/95/EC, regarding Restriction of Hazardous Substances (RoHS)
Applications
- Broadcast transmitter applications in the UHF band
- Digital Broadcasting
Parametrics
| Symbol | Parameter | Conditions | Min | Typ/Nom | Max | Unit |
|---|---|---|---|---|---|---|
| frange | frequency range | 470 | 806 | MHz | ||
| PL(1dB) | nominal output power at 1 dB gain compression | 600 | W | |||
| Test signal: DVB-T (8k OFDM) | ||||||
| Gp | power gain | VDS = 50 V [0] | 17 | dB | ||
| ηD | drain efficiency | VDS = 50 V; 470 MHz < f < 806 MHz; IDq = 1.3 A [0] | 40 | % | ||
| PL(AV) | average output power | [0] | 115 | W | ||
| IMDshldr | intermodulation distortion shoulder attenuation | [0] | -40 | dBc | ||
| PAR | peak-to-average ratio | [0] [1] | 8 | dB | ||
Package / Packing
| Type number | Package | Outline version | Reflow-/Wave soldering |
Packing | Product status | Marking |
Orderable part number, (Ordering code (12NC)) |
|---|---|---|---|---|---|---|---|
| BLF888DS | SOT539B (SOT539B) |
sot539b_po | Bulk Pack | Transferred | Standard Marking |
BLF888DSU (9340 678 65112) |
Pinning info
| Pin | Symbol | Description | Simplified outline | Graphic symbol |
|---|---|---|---|---|
| 1 | D1 | drain1 (peak) |
|
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| 2 | D2 | drain2 (main) | ||
| 3 | G1 | gate1 (peak) | ||
| 4 | G2 | gate2 (main) | ||
| 5 | S | source |
Ordering & availability
| Type number | Ordering code (12NC) | Orderable part number | Distributor | Buy online | Samples |
|---|---|---|---|---|---|
| BLF888DS | 9340 678 65112 | BLF888DSU | Flip Electronics | Buy | Not available |
Ordering & availability
| Type number | Ordering code (12NC) | Orderable part number | Distributor | Buy online | Samples |
|---|---|---|---|---|---|
| BLF888DS | 9340 678 65112 | BLF888DSU | Flip Electronics | Buy | Not available |
Documentation
| Title | Type | Date | |
|---|---|---|---|
| UHF power LDMOS transistor | Data sheet | 2016-02-18 | |
| Ampleon’s Ultra Wideband Doherty (UWD) for TV transmitters | White paper | 2016-09-09 | |
| Mounting and soldering of RF transistors in air cavity packages | Application note | 2024-05-23 | |
| RF power solutions for ISM, broadcast, navigation and safety radio applications | Brochure | 2024-10-25 | |
| RF power application reports for ISM, broadcast, navigation and safety radio applications | Brochure | 2024-10-08 | |
| Packages for RF power transistors | Leaflet | 2024-10-25 |
Design support
| Title | Type | Date | |
|---|---|---|---|
| Printed-Circuit Board (PCB) BLF888D(S) (Data sheet) | Design support | 2014-04-25 | |
| BLF888D Model for ADS (Keysight Advanced Design System) | Simulation model | 2017-04-14 |