Datasheet LTC6412 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | 800MHz, 31dB Range Analog-Controlled VGA |
| Pages / Page | 24 / 5 — AC ELECTRICAL CHARACTERISTICS. The. denotes specifi cations that apply … |
| File Format / Size | PDF / 505 Kb |
| Document Language | English |
AC ELECTRICAL CHARACTERISTICS. The. denotes specifi cations that apply over the full operating
Model Line for this Datasheet
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LTC6412
AC ELECTRICAL CHARACTERISTICS The
l
denotes specifi cations that apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. Typical AC electrical performance measured in demo board DC1464A (Figure 3, Test Circuit A) unless otherwise noted. Default operating conditions are VCC = 3.3V, EN = 0.8V, SHDN = 2.2V, +VG tied to VREF (negative gain slope mode), and ZSOURCE = ZLOAD = 50Ω unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Small Signal
BWGMAX –3dB Bandwidth for Sdd21 at Maximum Gain –VG = 0V, Test Circuit B 800 MHz BWGMIN –3dB Bandwidth for Sdd21 at Minimum Gain –VG = 1.2V, Test Circuit B 800 MHz Sdd11 Input Match at ZSOURCE = 50Ω Differential –VG = 0V to 1.2V, 10MHz-500MHz, –20 dB Test Circuit B Sdd22 Output Match at ZLOAD = 200Ω Differential –VG = 0V to 1.2V, 10MHz-250MHz, –10 dB Test Circuit B Sdd12 Reverse Isolation –VG = 0V to 1.2V, 10MHz-500MHz, -80 dB Test Circuit B
Transient Response
tSTEP(6dB) 6dB Gain Step Response Time Peak POUT = +4dBm, –VG = 0.2V to 0.4V, 0.4 μs Time to Settle Within 1dB of Final POUT tSTEP(12dB) 12dB Gain Step Response Time Peak POUT = +4dBm, –VG = 0.2V to 0.6V, 0.4 μs Time to Settle Within 1dB of Final POUT tSTEP(20dB) 20dB Gain Step Response Time Peak POUT = +4dBm, –VG = 0.2V to 0.8V, 0.4 μs Time to Settle Within 1dB of Final POUT tOVDR Overdrive Recovery Time at 70MHz –VG = 0V, PIN = +3dBm to –17dBm, Time to 25 ns Settle Within 1dB of Final POUT tOFF Output Amplifi er Disable Time POUT = 0dBm at EN = 0V, –VG = 0V, 25 ns EN = 0V to 3V, Time for POUT ≤ –20dBm tON Output Amplifi er Enable Time POUT = 0dBm at EN = 0V, –VG = 0V, EN = 3V to 20 ns 0V, Time for POUT ≥ –1dBm
70MHz Signal
GMAX Maximum Gain –VG = 0V, Test Circuit B 17 dB GMIN Minimum Gain –VG = 1.2V, Test Circuit B –15 dB GRANGE Gain Range GMAX-GMIN 32 dB HD2 Second Harmonic Distortion POUT = 0dBm, –VG = 0V to 1.0V –80 dBc HD3 Third Harmonic Distortion POUT = 0dBm, –VG = 0V to 1.0V –80 dBc IM3 Third-Order Intermodulation f1 = 69.5MHz, f2 = 70.5MHz, –90 dBc POUT = –6dBm/Tone, –VG = 0V to 1.0V OIP3 Output Third-Order Intercept f1 = 69.5MHz, f2 = 70.5MHz, 39 dBm POUT = –6dBm/Tone, –VG = 0V to 1.0V P1dBGMAX Output 1dB Compression Point at Max Gain –VG = 0V (Note 6) 13 dBm NFGMAX Noise Figure at Maximum Gain –VG = 0V (Note 5) 10 dB NFGMIN Noise Figure at Minimum Gain –VG = 1.2V (Note 5) 42 dB
140MHz Signal
GMAX Maximum Gain –VG = 0V, Test Circuit B 17 dB GMIN Minimum Gain –VG = 1.2V, Test Circuit B –15 dB GRANGE Gain Range GMAX-GMIN 32 dB HD2 Second Harmonic Distortion POUT = 0dBm, –VG = 0V to 1.0V –80 dBc HD3 Third Harmonic Distortion POUT = 0dBm, –VG = 0V to 1.0V –75 dBc 6412fa 5
AC ELECTRICAL CHARACTERISTICS The
l
denotes specifi cations that apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. Typical AC electrical performance measured in demo board DC1464A (Figure 3, Test Circuit A) unless otherwise noted. Default operating conditions are VCC = 3.3V, EN = 0.8V, SHDN = 2.2V, +VG tied to VREF (negative gain slope mode), and ZSOURCE = ZLOAD = 50Ω unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Small Signal
BWGMAX –3dB Bandwidth for Sdd21 at Maximum Gain –VG = 0V, Test Circuit B 800 MHz BWGMIN –3dB Bandwidth for Sdd21 at Minimum Gain –VG = 1.2V, Test Circuit B 800 MHz Sdd11 Input Match at ZSOURCE = 50Ω Differential –VG = 0V to 1.2V, 10MHz-500MHz, –20 dB Test Circuit B Sdd22 Output Match at ZLOAD = 200Ω Differential –VG = 0V to 1.2V, 10MHz-250MHz, –10 dB Test Circuit B Sdd12 Reverse Isolation –VG = 0V to 1.2V, 10MHz-500MHz, -80 dB Test Circuit B
Transient Response
tSTEP(6dB) 6dB Gain Step Response Time Peak POUT = +4dBm, –VG = 0.2V to 0.4V, 0.4 μs Time to Settle Within 1dB of Final POUT tSTEP(12dB) 12dB Gain Step Response Time Peak POUT = +4dBm, –VG = 0.2V to 0.6V, 0.4 μs Time to Settle Within 1dB of Final POUT tSTEP(20dB) 20dB Gain Step Response Time Peak POUT = +4dBm, –VG = 0.2V to 0.8V, 0.4 μs Time to Settle Within 1dB of Final POUT tOVDR Overdrive Recovery Time at 70MHz –VG = 0V, PIN = +3dBm to –17dBm, Time to 25 ns Settle Within 1dB of Final POUT tOFF Output Amplifi er Disable Time POUT = 0dBm at EN = 0V, –VG = 0V, 25 ns EN = 0V to 3V, Time for POUT ≤ –20dBm tON Output Amplifi er Enable Time POUT = 0dBm at EN = 0V, –VG = 0V, EN = 3V to 20 ns 0V, Time for POUT ≥ –1dBm
70MHz Signal
GMAX Maximum Gain –VG = 0V, Test Circuit B 17 dB GMIN Minimum Gain –VG = 1.2V, Test Circuit B –15 dB GRANGE Gain Range GMAX-GMIN 32 dB HD2 Second Harmonic Distortion POUT = 0dBm, –VG = 0V to 1.0V –80 dBc HD3 Third Harmonic Distortion POUT = 0dBm, –VG = 0V to 1.0V –80 dBc IM3 Third-Order Intermodulation f1 = 69.5MHz, f2 = 70.5MHz, –90 dBc POUT = –6dBm/Tone, –VG = 0V to 1.0V OIP3 Output Third-Order Intercept f1 = 69.5MHz, f2 = 70.5MHz, 39 dBm POUT = –6dBm/Tone, –VG = 0V to 1.0V P1dBGMAX Output 1dB Compression Point at Max Gain –VG = 0V (Note 6) 13 dBm NFGMAX Noise Figure at Maximum Gain –VG = 0V (Note 5) 10 dB NFGMIN Noise Figure at Minimum Gain –VG = 1.2V (Note 5) 42 dB
140MHz Signal
GMAX Maximum Gain –VG = 0V, Test Circuit B 17 dB GMIN Minimum Gain –VG = 1.2V, Test Circuit B –15 dB GRANGE Gain Range GMAX-GMIN 32 dB HD2 Second Harmonic Distortion POUT = 0dBm, –VG = 0V to 1.0V –80 dBc HD3 Third Harmonic Distortion POUT = 0dBm, –VG = 0V to 1.0V –75 dBc 6412fa 5
