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PSPL5546 7 GHz Bias Tee

PSPL5546 Datasheet

The PSPL5546 is a broadband, coaxial bias insertion tee and DC blocking capacitor. It was designed to have a very low cutoff frequency of only 3.5 kHz. It passes fast rise pulses with a minimum of waveform distortion. Its rise time is 45 ps. The frequency response is very flat, and the -3 dB bandwidth extends from 3.5 kHz to 7 GHz. The PSPL5546 is supplied with a 1 mH choke and terminal strip for connection to the DC bias.

Key performance specifications

3.5 kHz to 7 GHz
45 ps rise time
50 V, 500 mA

Typical performance

1 db/div log plot to 10 GHz Insertion Loss

1 db/div log plot to 10 GHz Insertion Loss

5 dB/div log plot to 10 GHz Return Los

Top to bottom: 1 ns/div, 200 ps/div, and 50 ps/div. Response to 20 ps rise time input step

2.5% rho/div and 200 ps/div. 35 ps rise time input step

Specifications

Parameter	Symbol	Units	Minimum	Typical	Maximum	Comments
Impedance	Z	ohms		50
Upper 3 dB frequency	f_c,h	GHz	4	7
Lower 3 dB frequency	f_c,l	kHz		3.5
Rise time	t_r	ps		45	75	10 – 90%
Insertion loss	S₂₁	dB		0.5
Input (AC) Return Loss	S₁₁	dB		23		f = 100 MHz
Refl. Coefficient (35 ps TDR)	Γ	%		-5		t > 200 ps
DC voltage	V	Volts			50
DC current	I	mA			500
Capacitance	C	μF		0.9		- 50%, + 80%
Inductance	L	mH		1.34		+/- 30% ¹
Resistance	R	ohms		1.5
RF power	P	W			2	Average power
Isolation	S₁₃	dB		30
DC path bandwidth	f_c,DC	kHz		4.5
RF Connectors	SMA jacks (f)
DC Connector	Solder pin
Warranty	One Year

¹ A 1 mH choke is supplied with the bias tee. It is to be wired in series directly to the DC in solder terminal on the coax module. This is a high impedance point. Avoid using long wire, especially coax, for this connection. Do not locate the choke close to ground. Excessive stray capacitance will cause a resonance that will appear as a dip in the insertion loss between 1 and 10 MHz.

Mechanical dimensions

Ordering information

Models

PSPL5546: BIAS TEE, 7 GHz, 50 V

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