LT5554IUH#TRPBF Linear Technology, LT5554IUH#TRPBF Datasheet
LT5554IUH#TRPBF
Specifications of LT5554IUH#TRPBF
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LT5554IUH#TRPBF Summary of contents
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... APPLICATIONS n Differential ADC Driver n IF Sampling Receivers n VGA IF Power Amplifi 50Ω Driver n Instrumentation L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION 5V V 0.1μ AMPLIFIER BPF INPUT LO 0.1μ ...
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... ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LT5554IUH#PBF LT5554IUH#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based fi nish parts. For more information on lead free part marking, go to: For more information on tape and reel specifi ...
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AC ELECTRICAL CHARACTERISTICS ENB = 3V, MODE = 5V, STROBE = 2.2V, V otherwise noted. SYMBOL PARAMETER Dynamic Performance BW Large Signal –3dB Bandwidth OP1dB Output 1dB Compression Point G Amplifi er Transconductance CMRR Common Mode Gain ...
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LT5554 AC ELECTRICAL CHARACTERISTICS ENB = 3V, MODE = 5V, STROBE = 2.2V, V otherwise noted. SYMBOL PARAMETER Noise/Linearity Performance Two Tones, P OUT IIP3 Input Third Order Intercept Point OIP3 Output Third Order Intercept Point for Max-Gain IMD3 Intermodulation ...
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AC ELECTRICAL CHARACTERISTICS (Timing Diagram) PG0 INPUTS T SU STROBE INPUTS T LATENCY STATE (i) OUT SIGNAL DC ELECTRICAL CHARACTERISTICS MODE = 5V, unless otherwise noted. (Note 3) (Test circuit shown in Figure 16), ...
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LT5554 DC ELECTRICAL CHARACTERISTICS MODE = 5V, unless otherwise noted. (Note 3) (Test circuit shown in Figure 16), unless otherwise noted. SYMBOL PARAMETER DEC External Capacitor Charge/Discharge CURRENT I DEC Pin Source Current IH(DEC) I DEC Pin Sink Current IL(DEC) ...
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ELECTRICAL CHARACTERISTICS Note 5: RTI (Referred-To-Input) stands for the total input-referred noise voltage source. RTI is close to output noise voltage divided by voltage gain (the exact equation is given in Defi nition of Specifi cation section). The equivalent noise ...
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LT5554 TYPICAL PERFORMANCE CHARACTERISTICS ENB = 3V, MODE = 5V, STROBE = 3V Integral Gain Error vs Attenuation at 50MHz 0.4 –40°C 25°C 85°C 0.3 0.2 0.1 0 –0.1 0 –4 –8 –12 ATTENUATION (dB) 5554 G07 Maximum ...
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TYPICAL PERFORMANCE CHARACTERISTICS ENB = 3V, MODE = 5V, STROBE = 3V Δf = 200kHz, unless otherwise noted. Two-Tone OIP3 vs Frequency for G and Critical Gain Steps MAX 49 G – 12dB MAX 46 G MAX G ...
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LT5554 TYPICAL PERFORMANCE CHARACTERISTICS ENB = 3V, MODE = 5V, STROBE = 3V Δf = 200kHz, unless otherwise noted. Two-Tone IMD3 and OIP3 vs Attenuation at 200MHz –70 IMD3 –74 –78 OIP3 –82 –86 0 –4 –8 –12 ...
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TYPICAL PERFORMANCE CHARACTERISTICS ENB = 3V, MODE = 5V, STROBE = 3V Δf = 200kHz, unless otherwise noted. HD3 vs Frequency for 10dBm, Figure 17 MIN OUT –50 –56 G MAX –62 G ...
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LT5554 TYPICAL PERFORMANCE CHARACTERISTICS ENB = 3V, MODE = 5V, STROBE = 3V Single-Ended Output Current vs Attenuation 98 –40°C 96 25°C 85° –4 –8 ATTENUATION (dB) I Shutdown Current ENB = ...
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TYPICAL PERFORMANCE CHARACTERISTICS ENB = 3V, MODE = 5V, STROBE = 3V 2dB-Step Response (PG4) 120MHz Signal 0.1V/DIV 5554 G46 10ns/DIV MODE = HIGH 8dB-Step (PG6) 120MHz Pulse Signal for 8dB Overdrive 1V/DIV 5554 G49 5ns/DIV MODE = ...
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LT5554 PIN FUNCTIONS When the MODE pin is left open, the PGx inputs are AC- couple and the STROBE input is DC-coupled. In DC-coupled mode, the PGx and STROBE inputs levels are 0.6V and 2.2V. In AC-coupled mode, the PGx ...
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FUNCTIONAL CHARACTERISTICS Programmable Gain Table STATE PG0 PG1 PG2 N 0.125 0.25 0.5 127 126 125 124 123 H H 122 L H 121 H L 120 L ...
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LT5554 DEFINITION OF SPECIFICATIONS Amplifi er Impedance and Gain Defi nitions (Differential) R Input source resistor. Input matching is assumed LT5554 input resistance (internal, 50Ω LT5554 input capacitance (internal ...
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DEFINITION OF SPECIFICATIONS Noise Defi nitions for 50Ω Matched Input e Source resistor RMS noise voltage • • • for ...
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LT5554 APPLICATIONS INFORMATION The PGx gain control inputs and STROBE input can be confi gured to be either DC coupled or AC coupled depend- ing on MODE pin level. The LT5554 gain control inputs can be connected without external components ...
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APPLICATIONS INFORMATION The differential outputs can also be converted to single- ended 50Ω load using a center-tap transformer interface shown in Figure 6 and Figure 16. The internal 400Ω differential resistor (R impedance and the maximum voltage gain (G + ...
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LT5554 APPLICATIONS INFORMATION All seven PGx gain control inputs and STROBE input can be confi gured as DC-coupled or ac-coupled. Accordingly, there are two basic equivalent schematics (shown in Figures 8 and 9) depending on MODE input choice (Table1). Each ...
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APPLICATIONS INFORMATION Gain Step Accuracy LT5554 internal input signal coupling to the transcon- ductance amplifi er inputs across the 4dB step attenuator increases with frequency. The gain step error is higher when the LT5554 gain update changes the input attenua- ...
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LT5554 APPLICATIONS INFORMATION The LT5554 Noise and Linearity performance throughout the 16dB gain range has an obvious discontinuity at every 4dB gain step. The noise fi gure is fairly constant from 0dB (Maximum Gain) to –3.875dB attenuation when the gain ...
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APPLICATIONS INFORMATION Layout Considerations Attention must be paid to the printed circuit board layout to avoid output pin to input pin signal coupling (external feedback). The evaluation board layout is a good example. The exposed backside pad on the LT5554 ...
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LT5554 APPLICATIONS INFORMATION The LT5554 output power P was obtained by adding OUT 3dB for matching-loss and the transformer loss IL(T2) in Table 3 to the board output power at J3 connector. The transformer insertion loss (frequency and temperature dependent) ...
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APPLICATIONS INFORMATION ENB PG0 CC DEC C4 C8 0.1μF 0.1μ 1:1 • • ETC1-1-13 MACOM CCO ENB = 5V Figure 18. ...
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LT5554 APPLICATIONS INFORMATION R8 0Ω V DEC C5 1μF R16 100Ω J6 Figure 20. Timing Test for PG6 and STROBE (Simplifi ed Schematic) Evaluation Board Figure 21 shows the schematic of the LT5554 evaluation board. Transformer T2 is TC2-1T and ...
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APPLICATIONS INFORMATION ENB PG0 PG1 PG2 DEC ENB PG0 PG1 PG2 DEC ...
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LT5554 APPLICATIONS INFORMATION 28 Figure 22. Top Side Figure 23. Inner Layer 2 GND 5554f ...
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APPLICATIONS INFORMATION Figure 24. Inner Layer 3 Power Figure 25. Bottom Side LT5554 5554f 29 ...
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LT5554 APPLICATIONS INFORMATION 30 Figure 26. Silkscreen Top Figure 27. Silkscreen Bottom 5554f ...
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... ON THE TOP AND BOTTOM OF PACKAGE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. UH Package 32-Lead Plastic QFN (5mm × ...
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... Low Frequency to 1GHz, 83dB Log Linear Dynamic Range 75dB Dynamic Range, ±1dB Output Variation Over Temperature Fast Responding 60dB Dynamic Range, ±0.3dB Accuracy Over Temperature www.linear.com ● = 28A CC Baseband DC = 82A at 3.3V CC Baseband DC DC 5554f LT 0708 • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2008 © ...