LDMOS 2-stage integrated Doherty MMIC

The BLM8D1822S-50PB(G) is a dual section, 2-stage fully integrated Doherty MMIC solution using Ampleon’s state of the art GEN8 LDMOS technology. The carrier and peaking device, input splitter and output combiner are integrated in a single package. This multiband device is perfectly suited as general purpose driver or small cell final in the frequency range from 1805 MHz to 2170 MHz. Available in gull wing or flat lead outline.

Features and benefits

  • Integrated input splitter
  • Integrated output combiner
  • High efficiency
  • Designed for broadband operation (frequency 1805 MHz to 2170 MHz)
  • High section-to-section isolation enabling multiple combinations
  • Integrated temperature compensated bias
  • Independent control of carrier and peaking bias
  • Integrated ESD protection
  • Excellent thermal stability
  • Source impedance 50 Ω; high power gain
  • For RoHS compliance see the product details on the Ampleon website


  • RF power MMIC for multi-carrier and multi-standard GSM, W-CDMA and LTE base stations in the 1805 MHz to 2170 MHz frequency range. Possible circuit topologies are the following:
    • Dual section or single ended
    • Quadrature combined
    • Push-pull


All application notes
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Design tool

RF Power Lifetime Calculator


LDMOS 2-stage integrated Doherty MMIC



Symbol Parameter Conditions Min Typ/Nom Max Unit
frange frequency range 1805 2170 MHz
PL(1dB) nominal output power at 1 dB gain compression 50 W
Test signal: 1-c W-CDMA
Gp power gain f = 1807.5 MHz [0] 26 dB
Gp power gain f = 2167.5 MHz [0] 24.5 26.5 28.5 dB
RLin input return loss f = 2167.5 MHz [0] -19 -10 dB
ηD drain efficiency f = 2167.5 MHz [0] 31 37 %
ACPR5M adjacent channel power ratio (5 MHz) f = 2167.5 MHz [0] -34 -26 dBc
PARO output peak-to-average ratio f = 2167.5 MHz [0] 6.7 7.8 dB

Package / Packing

Type number Package Outline version Reflow-/Wave
Packing Product status Marking Orderable part number,
(Ordering code (12NC))
BLM8D1822S-50PB SOT1211-3
sot1211-3_po.pdf Reel 13" Q1/T1 in Drypack Active Standard Marking BLM8D1822S-50PBY
(9340 698 89518)
Reel 13" Q1/T1 in Drypack Active Standard Marking BLM8D1822S-50PBYZ
(9340 698 89535)

Pinning info

Pin Symbol Description Simplified outline Graphic symbol
1 VDS(A1) drain-source voltage of driver stages of section A
2 VGS(A_P) gate-source voltage of peaking A_P
3 VGS(A_C) gate-source voltage of carrier A_C
4 RF_IN_A RF input section A
5 n.c. not connected
6 n.c. not connected
7 n.c. not connected
8 n.c. not connected
9 n.c. not connected
10 n.c. not connected
11 RF_IN_B RF input section B
12 VGS(B_C) gate-source voltage of carrier B_C
13 VGS(B_P) gate-source voltage of peaking B_P
14 VDS(B1) drain-source voltage of driver stages of section B
15 RF_OUT_B/VDS(B2) RF output section B / drain-source voltage of final stages of section B
16 RF_OUT_A/VDS(A2) RF output section A / drain-source voltage of final stages of section A
flange GND RF ground


Type number Orderable part number Chemical content RoHS / RHF Leadfree conversion date MSL MSL LF
BLM8D1822S-50PB BLM8D1822S-50PBY BLM8D1822S-50PB 3 3
BLM8D1822S-50PB BLM8D1822S-50PBYZ BLM8D1822S-50PB 3 3
Quality and reliability disclaimer

Ordering & availability

Type number Ordering code (12NC) Orderable part number Distributor Buy online Samples
BLM8D1822S-50PB 9340 698 89518 BLM8D1822S-50PBY DigiKey Buy Request samples

Design support

Title Type Date
PCB Design BLM8D1822S-50PB(G) (Data sheet) Design support 2018-10-19