Datasheet LT1251, LT1256 (Analog Devices) - 6

LT1251/LT1256
W U TYPICAL PERFORMANCE CHARACTERISTICS Bandwidth vs Feedback Bandwidth vs Feedback Voltage Gain and Phase Resistance, A Resistance, A vs Frequency V = 1, RL = 100
Ω
V = 1, RL = 1k
70 70 5 45 PEAKING ≤ 0.5dB PEAKING ≤ 0.5dB PHASE 4 0 PEAKING ≤ 5.0dB PEAKING ≤ 5.0dB 60 60 3 –45 PHASE SHIFT (DEG) 2 –90 50 50 V V S = ±15V 1 –135 S = ±15V GAIN 40 40 0 –180 V V S = 5V S = 5V –1 –225 30 30 VOLTAGE GAIN (dB) –2 –270 3dB BANDWIDTH (MHz) 3dB BANDWIDTH (MHz) – V – VS = ±5V S = ±5V VS = ±5V –3 RF = 1.3k 20 20 R –4 L = 100Ω 10 10 –5 0.6 0.8 1.0 1.2 1.4 1.6 1.8 0.6 0.8 1.0 1.2 1.4 1.6 1.8 100k 1M 10M 100M FEEDBACK RESISTANCE (kΩ) FEEDBACK RESISTANCE (kΩ) FREQUENCY (Hz) 1251/56 G13 1251/56 G11 1251/56 G12
Bandwidth vs Feedback Bandwidth vs Feedback Off-Channel Isolation Resistance, AV = 10, RL = 100
Ω
Resistance, AV = 10, RL = 1k vs Frequency
60 60 0 PEAKING ≤ 0.5dB PEAKING ≤ 0.5dB VS = ±5V PEAKING ≤ 5.0dB PEAKING ≤ 5.0dB –10 VFS = 2.5V 50 50 –20 VC = 0V RL = 100Ω V –30 S = ±15V RF = 1.5k 40 40 –40 AV = 10 VS = ±15V –50 V 30 V S = 5V S = 5V 30 –60 3dB BANDWIDTH (MHz) 3dB BANDWIDTH (MHz) –70 – – V AV = 1 20 V S = ±5V S = ±5V 20 OFF-CHANNEL ISOLATION (dB) –80 –90 10 10 –100 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0.4 0.6 0.8 1.0 1.2 1.4 1.6 10k 100k 1M 10M 100M FEEDBACK RESISTANCE (kΩ) FEEDBACK RESISTANCE (kΩ) FREQUENCY (Hz) 1251/56 G14 1251/56 G15 1251/56 G16
Bandwidth vs Feedback Bandwidth vs Feedback –3dB Bandwidth vs Resistance, AV = 100, RL = 100
Ω
Resistance, AV = 100, RL = 1k Control Voltage
10 10 40 NO PEAKING NO PEAKING VS = ±5V 9 9 R 35 L = 100Ω VS = ±15V VS = ±15V VFS = 2.5V 8 8 RF = 1.3k 30 7 7 V V S = ±5V S = ±5V 6 6 25 5 VS = 5V 5 VS = 5V 20 –3dB BANDWIDTH (MHz) 4 –3dB BANDWIDTH (MHz) 4 –3dB BANDWIDTH (MHz) 15 3 3 2 2 10 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 0.5 1.0 1.5 2.0 2.5 FEEDBACK RESISTANCE (kΩ) FEEDBACK RESISTANCE (kΩ) CONTROL VOLTAGE (V) 1251/56 G17 1251/56 G18 1251/56 G19 6