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Details, datasheet, quote on part number:2689J2
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Datasheet text preview:
HIGH FREQUENCY MAGNETICS
Through Hole Wideband Signal Splitter
· Through hole, equal-ratio 3-port hybrid transformer designed for both analog and digital applications requiring signal splitting or combining Extremely wide frequency response Very fast rise time · Reliability testing: shock, vibration, temperature cycling, temperature - humidity - bias · · · Operating temperature range -40° C to +85° C Meets IEC 695, 2-2 flammability requirements PWB Process Capability: standard printed wiring board assembly techniques, total-immersion cleaning
TM00151
· ·
ELECTRICAL SPECIFICATIONS at 25° C
Impedance Ratio Part Number (1-6) : (3-6) + (4-6) 2689J2 75 : 75 + 75 Nominal Signal Split dB (1-6) to (3-6) (1-6) to (4-6) 3.0 3dB Bandwidth typ (1-6) to (3-6) (1-6) to (4-6) 20 kHz - 800 MHz
Pulse Rise Time ns typ
0.5
Return Loss (RL) typ Port A B C RL>20 db 100 kHz - 500 MHz 200 kHz - 500 MHz 200 kHz - 500 MHz RL>30 db 400 kHz - 200 MHz 2 MHz - 300 MHz 2 MHz - 300 MHz B to C Port
Transhybrid Loss (THL) typ THL>20 db THL>30 db
100 kHz - 800 MHz
300 kHz - 500 MHz
Port A = ASIG to GND Port B = BSIG to GND Port C = CSIG to GND
MECHANICAL
0.70 [17.78] max
SCHEMATIC
0.45 [11.43] max
ASIG 1
3 BSIG
0.120 ±0.006 [3.05 ±0.15] Terminal 1 ID
0.023 [0.58] Sq typ (Phosphor bronze, solder-coated)
5 2
1 2 3
0.40 [10.16] max
0.250 [6.35]
6 5 4
GND 6
4 CSIG
0.200 [5.08] 0.400 [10.16] 0.120 [3.05]
Bottom View
Unless otherwise specified, dimensions are nominal and in inches (millimeters).
©2000 Bel Fuse Inc. Specifications subject to change without notice. 09.00
Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 · Tel 201-432-0463 · Fax 201-432-9542 · www.belfuse.com T1-119
HIGH FREQUENCY MAGNETICS
TM00151
Through Hole Wideband Signal Splitter
PIN DIAGRAM
2689J2 ASIG 1 6 GND
APPLICATIONS NOTES The 2689J2 hybrid transformer operates with 75 terminations over an extremely wide frequency spectrum (3 dB response: 20 kHz to 800 MHz). It can also be used as a pulse transformer with very fast pulses (typical rise time: 0.5 ns). The 2689J2 operates as either a signal splitter or a signal combiner. As a signal splitter, the transformer provides two identical output signals (which are in phase with each other) from a single input. Each of the two output signals is 3 dB down from the input signal (half the power of the input signal). There is a high degree of separation or transhybrid loss between the two output signals. As a signal combiner, the transformer provides a single output signal from two identical input signals (which are in phase with each other). The output signal has twice the power of either input signal.
COM1
2
5
COM2
BSIG
3
4
CSIG
SIGNAL SPLITTER
INPUT 75 LINE ASIG OUTPUT BSIG COM1 COM2 C1 GND 75 LINE R1 OUTPUT 75 LINE 2689J2
PIN DESCRIPTIONS AND TERMINATIONS
Pin 1 2 3 4 5 6 Symbol Name and Function ASIG COM1 BSIG CSIG COM2 GND R1 C1 A signal. Input for splitter configuration. Output for combiner application. Common point of transformer 1. Must be connected externally to COM2. B signal. Output for splitter configuration. Input for combiner application. C signal. Output for splitter configuration. Input for combiner application. Common point of transformer 2. Must be connected externally to COM1. Ground. Connect to circuit ground. 162 external resistor. 7 pF external capacitor.
75 LINE
CSIG
SIGNAL COMBINER
2689J2 ASIG INPUT 75 LINE R1 INPUT CSIG BSIG COM1 COM2 C1 GND OUTPUT 75 LINE
©2000 Bel Fuse Inc. Specifications subject to change without notice. 09.00
CORPORATE
Bel Fuse Inc. 198 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
FAR EAST
Bel Fuse Ltd. 8F / 8 Luk Hop Street San Po Kong Kowloon, Hong Kong Tel 852-2328-5515 Fax 852-2352-3706 www.belfuse.com
EUROPE
Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Suite G7, Preston Lancashire, PR1 8UD, U.K. Tel 44-1772-556601 Fax 44-1772-888366 www.belfuse.com
T1-120
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