Datasheet LTC6431-20 (Analog Devices) - 8
| Manufacturer | Analog Devices |
| Description | 20dB Gain Block, 50Ω IF Amplifier |
| Pages / Page | 16 / 8 — TYPICAL. PERFORMANCE CHARACTERISTICS TA = 25°C, VCC = 5V, ZSOURCE = ZLOAD … |
| File Format / Size | PDF / 429 Kb |
| Document Language | English |
TYPICAL. PERFORMANCE CHARACTERISTICS TA = 25°C, VCC = 5V, ZSOURCE = ZLOAD = 50Ω unless
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LTC6431-20
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VCC = 5V, ZSOURCE = ZLOAD = 50Ω unless otherwise noted. Measurements are performed using Test Circuit A, measuring from 50Ω SMA to 50Ω without de-embedding (Note 4). Output Power vs Input Power Gain vs Output Power Over Frequency Over Frequency P1dB vs Frequency
24 22 25 22 24 21 23 20 20 22 50MHz 50MHz 18 100MHz 100MHz 21 200MHz 19 200MHz 16 300MHz 300MHz 20 400MHz 18 GAIN (dB) 400MHz 14 P1dB (dBm) 19 500MHz 500MHz OUTPUT POWER (dBm) 600MHz 17 600MHz 18 12 700MHz 700MHz 800MHz 800MHz 17 10 16 900MHz 900MHz 16 1000MHz 1000MHz 8 15 15 –10 –8 –6 –4 –2 0 2 4 6 8 10 12 14 16 18 20 22 24 0 200 400 600 800 1000 INPUT POWER (dBm) OUTPUT POWER (dBm) FREQUENCY (MHz) 643120 G19 643120 G20 643120 G21
PIN FUNCTIONS DNC (Pins 1 to 7, 10 to 15, 19 to 21):
Do Not Connect.
T_DIODE (Pin 16):
Optional Diode. The T_DIODE can Do not connect these pins, allow them to float.
Failure to
be forward biased to ground with 1mA of current. The
float these pins may impair operation of the LTC6431-20.
measured voltage will be an indicator of chip temperature.
GND (Pins 8, 17, 23, Exposed Pad Pin 25):
Ground.
Out (Pin 18):
Amplifier Output Pin. A choke inductor is For best RF performance, all ground pins should be necessary to provide power from the 5V supply and to connected to the printed circuit board ground plane. The provide RF isolation. For best performance select a choke exposed pad (Pin 25) should have multiple via holes to with low loss and high self-resonant frequency (SRF). A an underlying ground plane for low inductance and good DC blocking capacitor is also required. See Applications thermal dissipation. Information Section for specific recommendations.
VCC (Pins 9, 22):
Positive Power Supply. Either or both
IN (Pin 24):
Signal input pin with internally generated 2.0V VCC pins should be connected to the 5.0V supply. Bypass DC bias. A DC blocking capacitor is required. See Applica- the VCC pin with 1000pF and 0.1µF capacitors. The 1000pF tions Information Section for specific recommendations. capacitor should be physically close to Pin 22. 643120f 8 For more information www.linear.com/LTC6431-20 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information DC Electrical Characteristics AC Electrical Characteristics Typical Performance Characteristics Block Diagram Test Circuit A Operation Applications Information Demo Board S Parameters Package Description Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VCC = 5V, ZSOURCE = ZLOAD = 50Ω unless otherwise noted. Measurements are performed using Test Circuit A, measuring from 50Ω SMA to 50Ω without de-embedding (Note 4). Output Power vs Input Power Gain vs Output Power Over Frequency Over Frequency P1dB vs Frequency
24 22 25 22 24 21 23 20 20 22 50MHz 50MHz 18 100MHz 100MHz 21 200MHz 19 200MHz 16 300MHz 300MHz 20 400MHz 18 GAIN (dB) 400MHz 14 P1dB (dBm) 19 500MHz 500MHz OUTPUT POWER (dBm) 600MHz 17 600MHz 18 12 700MHz 700MHz 800MHz 800MHz 17 10 16 900MHz 900MHz 16 1000MHz 1000MHz 8 15 15 –10 –8 –6 –4 –2 0 2 4 6 8 10 12 14 16 18 20 22 24 0 200 400 600 800 1000 INPUT POWER (dBm) OUTPUT POWER (dBm) FREQUENCY (MHz) 643120 G19 643120 G20 643120 G21
PIN FUNCTIONS DNC (Pins 1 to 7, 10 to 15, 19 to 21):
Do Not Connect.
T_DIODE (Pin 16):
Optional Diode. The T_DIODE can Do not connect these pins, allow them to float.
Failure to
be forward biased to ground with 1mA of current. The
float these pins may impair operation of the LTC6431-20.
measured voltage will be an indicator of chip temperature.
GND (Pins 8, 17, 23, Exposed Pad Pin 25):
Ground.
Out (Pin 18):
Amplifier Output Pin. A choke inductor is For best RF performance, all ground pins should be necessary to provide power from the 5V supply and to connected to the printed circuit board ground plane. The provide RF isolation. For best performance select a choke exposed pad (Pin 25) should have multiple via holes to with low loss and high self-resonant frequency (SRF). A an underlying ground plane for low inductance and good DC blocking capacitor is also required. See Applications thermal dissipation. Information Section for specific recommendations.
VCC (Pins 9, 22):
Positive Power Supply. Either or both
IN (Pin 24):
Signal input pin with internally generated 2.0V VCC pins should be connected to the 5.0V supply. Bypass DC bias. A DC blocking capacitor is required. See Applica- the VCC pin with 1000pF and 0.1µF capacitors. The 1000pF tions Information Section for specific recommendations. capacitor should be physically close to Pin 22. 643120f 8 For more information www.linear.com/LTC6431-20 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information DC Electrical Characteristics AC Electrical Characteristics Typical Performance Characteristics Block Diagram Test Circuit A Operation Applications Information Demo Board S Parameters Package Description Typical Application Related Parts
