Datasheet LT5554 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | Broadband Ultra Low Distortion 7-Bit Digitally Controlled VGA |
| Pages / Page | 32 / 3 — AC ELECTRICAL CHARACTERISTICS. (ROUT = 50Ω) Specifi cations are at TA = … |
| File Format / Size | PDF / 619 Kb |
| Document Language | English |
AC ELECTRICAL CHARACTERISTICS. (ROUT = 50Ω) Specifi cations are at TA = 25°C. VCC = 5V, VCCO = 5V,
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LT5554
AC ELECTRICAL CHARACTERISTICS (ROUT = 50Ω) Specifi cations are at TA = 25°C. VCC = 5V, VCCO = 5V, ENB = 3V, MODE = 5V, STROBE = 2.2V, VIH = 2.2V, VIL = 0.6V, maximum gain (Notes 3, 6), (Test circuits shown in Figure 16), unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNIT Dynamic Performance
BW Large Signal –3dB Bandwidth All Gain Settings (Note 7) LF – 1000 MHz OP1dB Output 1dB Compression Point All Gain Settings, ROUT = 130Ω, 70MHz 20 dBm GM Amplifi er Transconductance at GMAX FIN = 100MHz 0.15 S CMRR Common Mode Gain to Single-Ended FIN = 100MHz, Figure 19 –6 dB Output S12 Reverse Isolation FIN = 100MHz –86 dB FIN = 400MHz –78 dB Overdrive Recovery Time 5ns Input Pulse, VOUT within ±10% 5 ns
Noise/Linearity Performance Two Tones, POUT = 4dBm/Tone (2VP-P into 50Ω), Δf = 200kHz
IIP3 Input Third Order Intercept Point GMAX, FIN = 200MHz 27 dBm GMAX –3.875dB, FIN = 200MHz 30 dBm OIP3 Output Third Order Intercept Point for FIN = 100MHz 45 dBm Max-Gain FIN = 200MHz 46 dBm IMD3 Intermodulation Product for Max-Gain FIN = 100MHz –82 dBc FIN = 200MHz –84 dBc OIP3 Output Third Order Intercept Point for FIN = 100MHz 44 dBm –3.875dB STEP FIN = 200MHz 40 dBm OIP3 Output Third Order Intercept Point GMAX, F1 = 88MHz, F2 = 112MHz 40.5 47 dBm GMAX –3.875dB, F1 = 88MHz, F2 = 112MHz 38 44 dBm HD3 Third Harmonic Distortion Pout = 10dBm, FIN = 100MHz, GMAX –62 dBc VONOISE Output Noise Noise Spectral Density GMAX, FIN = 200MHz 10.7 nV/√Hz GMAX –3.875dB
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FIN = 200MHz 7.3 nV/√Hz NF Noise Figure GMAX, FIN = 200MHz 10 dB GMAX –3.875dB
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FIN = 200MHz 10.5 dB RTI Input Referred Noise Spectral Density GMAX, FIN = 200MHz 1.34 nV/√Hz (RMS) (Note 5) GMAX –3.875dB
,
FIN = 200MHz 1.42 nV/√Hz SFDR Spurious Free Dynamic Range in 1Hz GMAX, FIN = 200MHz 128 dBm/Hz BW. GMAX –3.875dB
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FIN = 200MHz 129 dBm/Hz
Amplifi er Voltage Gain and Gain Step
GMAX Maximum Voltage and Power Gain FIN = 112MHz 15.3 17.6 19.7 dB GMIN Minimum Voltage and Power Gain FIN = 100MHz 1.725 dB GSTEP Gain Step Size (Note 9) Except For –4dB, –8dB, –12dB Steps 0.125 0.25 dB For –4dB, –8dB, –12dB Steps 0.35 dB GDERROR Group Delay Step Accuracy FIN = 100MHz 10 ps
AMPLIFIER I/O Differential IMPEDANCE
RIN Input Resistance FIN = 100MHz, GMAX to GMAX –3.875dB 43 Ω FIN = 100MHz, GMAX –4dB to GMIN 47 Ω CIN Input Capacitance FIN = 100MHz 2.8 pF RO Output Resistance FIN = 100MHz 400 Ω CO Output Capacitance FIN = 100MHz 1.9 pF 5554f 3
AC ELECTRICAL CHARACTERISTICS (ROUT = 50Ω) Specifi cations are at TA = 25°C. VCC = 5V, VCCO = 5V, ENB = 3V, MODE = 5V, STROBE = 2.2V, VIH = 2.2V, VIL = 0.6V, maximum gain (Notes 3, 6), (Test circuits shown in Figure 16), unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNIT Dynamic Performance
BW Large Signal –3dB Bandwidth All Gain Settings (Note 7) LF – 1000 MHz OP1dB Output 1dB Compression Point All Gain Settings, ROUT = 130Ω, 70MHz 20 dBm GM Amplifi er Transconductance at GMAX FIN = 100MHz 0.15 S CMRR Common Mode Gain to Single-Ended FIN = 100MHz, Figure 19 –6 dB Output S12 Reverse Isolation FIN = 100MHz –86 dB FIN = 400MHz –78 dB Overdrive Recovery Time 5ns Input Pulse, VOUT within ±10% 5 ns
Noise/Linearity Performance Two Tones, POUT = 4dBm/Tone (2VP-P into 50Ω), Δf = 200kHz
IIP3 Input Third Order Intercept Point GMAX, FIN = 200MHz 27 dBm GMAX –3.875dB, FIN = 200MHz 30 dBm OIP3 Output Third Order Intercept Point for FIN = 100MHz 45 dBm Max-Gain FIN = 200MHz 46 dBm IMD3 Intermodulation Product for Max-Gain FIN = 100MHz –82 dBc FIN = 200MHz –84 dBc OIP3 Output Third Order Intercept Point for FIN = 100MHz 44 dBm –3.875dB STEP FIN = 200MHz 40 dBm OIP3 Output Third Order Intercept Point GMAX, F1 = 88MHz, F2 = 112MHz 40.5 47 dBm GMAX –3.875dB, F1 = 88MHz, F2 = 112MHz 38 44 dBm HD3 Third Harmonic Distortion Pout = 10dBm, FIN = 100MHz, GMAX –62 dBc VONOISE Output Noise Noise Spectral Density GMAX, FIN = 200MHz 10.7 nV/√Hz GMAX –3.875dB
,
FIN = 200MHz 7.3 nV/√Hz NF Noise Figure GMAX, FIN = 200MHz 10 dB GMAX –3.875dB
,
FIN = 200MHz 10.5 dB RTI Input Referred Noise Spectral Density GMAX, FIN = 200MHz 1.34 nV/√Hz (RMS) (Note 5) GMAX –3.875dB
,
FIN = 200MHz 1.42 nV/√Hz SFDR Spurious Free Dynamic Range in 1Hz GMAX, FIN = 200MHz 128 dBm/Hz BW. GMAX –3.875dB
,
FIN = 200MHz 129 dBm/Hz
Amplifi er Voltage Gain and Gain Step
GMAX Maximum Voltage and Power Gain FIN = 112MHz 15.3 17.6 19.7 dB GMIN Minimum Voltage and Power Gain FIN = 100MHz 1.725 dB GSTEP Gain Step Size (Note 9) Except For –4dB, –8dB, –12dB Steps 0.125 0.25 dB For –4dB, –8dB, –12dB Steps 0.35 dB GDERROR Group Delay Step Accuracy FIN = 100MHz 10 ps
AMPLIFIER I/O Differential IMPEDANCE
RIN Input Resistance FIN = 100MHz, GMAX to GMAX –3.875dB 43 Ω FIN = 100MHz, GMAX –4dB to GMIN 47 Ω CIN Input Capacitance FIN = 100MHz 2.8 pF RO Output Resistance FIN = 100MHz 400 Ω CO Output Capacitance FIN = 100MHz 1.9 pF 5554f 3
