Datasheet LT1251, LT1256 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | 40MHz Video Fader and DC Gain Controlled Amplifier |
| Pages / Page | 24 / 3 — SIG AL A PLIFIER AC CHARACTERISTICS. C, VS = |
| File Format / Size | PDF / 396 Kb |
| Document Language | English |
SIG AL A PLIFIER AC CHARACTERISTICS. C, VS =
Model Line for this Datasheet
Text Version of Document
LT1251/LT1256
U W SIG AL A PLIFIER AC CHARACTERISTICS 0
°
C
≤
TA
≤
70
°
C, VS =
±
5V, VIN = 1VRMS, f = 1kHz, AVMAX = 1, RF1 = RF2 = 1.5k, VFS = 2.5V, IC = IFS = NULL = Open, Pins 5,10 = GND, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Gain Supply Rejection VC = 1.25V, VS = ±5V to ±15V ● 0.03 0.10 %/V External Resistor Gain Pins 5,10 = Open, External 5k Resistors ● 45 55 % 50% Input 1 from Pins 4,11 to Ground, VC = 1.25V SR Slew Rate VIN = ±2.5V, VO at ±2V, RL = 150Ω ● 150 300 V/µs Control Feedthrough VC = 1.25VDC + 2.5VP-P at 1kHz 2.5 mVP-P Full Power Bandwidth VO = 1VRMS 20 MHz BW Small-Signal Bandwidth VS = ±5V 30 MHz VS = ±15V 40 MHz Differential Gain (Notes 4,5) Control = 0% or 100% 0.02 % Control = 25% or 75% 0.90 % Differential Phase (Notes 4,5) Control = 0% or 100% 0.02 DEG Control = 25% or 75% 0.55 DEG THD Total Harmonic Distortion Gain = 100% 0.002 % Gain = 50% 0.015 % Gain = 10% 0.4 % tr, tf Rise Time, Fall Time 10% to 90%, VO = 100mV 11 ns OS Overshoot VO = 100mV 3 % tPD Propagation Delay VO = 100mV 10 ns tS Settling Time 0.1%, ∆VO = 2V 65 ns
U W SIG AL A PLIFIER DC CHARACTERISTICS 0
°
C
≤
TA
≤
70
°
C, VS =
±
5V, VCM = 0V, VFS = 2.5V, IC = IFS = NULL = Open, Pins 5,10 = GND, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VOS Input Offset Voltage Either Input ● 2 5 mV Difference Between Inputs ● – 3 1 3 mV Input Offset Voltage Drift 10 µV/°C I + IN Noninverting Input Bias Current Either Input ● – 2.5 0.5 2.5 µA I – IN Inverting Input Bias Current Either Input ● – 30 10 30 µA Difference Between Inputs ● – 1 0.5 1 µA Inverting Input Bias Current Null Change Null (Pin 6) Open to V – ● – 280 – 170 – 60 µA en Input Noise Voltage Density f = 1kHz 2.7 nV/√Hz +in Noninverting Input Noise Current Density f = 1kHz 1.5 pA/√Hz –in Inverting Input Noise Current Density f = 1kHz 29 pA/√Hz RIN Input Resistance Either Noninverting Input ● 5 17 MΩ CIN Input Capacitance Either Noninverting Input ● 1.5 pF Input Voltage Range VS = ±5V ● ±3 ±3.2 V VS = 5V ● 2 3 V CMRR Common Mode Rejection Ratio VCM = – 3V to 3V ● 55 61 dB VS = 5V, VCM = 2V to 3V, VO = 2.5V ● 50 57 dB Inverting Input Current Common Mode Rejection VCM = – 3V to 3V ● 0.07 0.25 µA/V VS = 5V, VCM = 2V to 3V, VO = 2.5V ● 0.17 0.70 µA/V PSRR Power Supply Rejection Ratio VS = ±5V to ±15V ● 70 76 dB Noninverting Input Current Power Supply Rejection VS = ±5V to ±15V ● 30 100 nA/V Inverting Input Current Power Supply Rejection VS = ±5V to ±15V ● 30 200 nA/V 3
U W SIG AL A PLIFIER AC CHARACTERISTICS 0
°
C
≤
TA
≤
70
°
C, VS =
±
5V, VIN = 1VRMS, f = 1kHz, AVMAX = 1, RF1 = RF2 = 1.5k, VFS = 2.5V, IC = IFS = NULL = Open, Pins 5,10 = GND, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Gain Supply Rejection VC = 1.25V, VS = ±5V to ±15V ● 0.03 0.10 %/V External Resistor Gain Pins 5,10 = Open, External 5k Resistors ● 45 55 % 50% Input 1 from Pins 4,11 to Ground, VC = 1.25V SR Slew Rate VIN = ±2.5V, VO at ±2V, RL = 150Ω ● 150 300 V/µs Control Feedthrough VC = 1.25VDC + 2.5VP-P at 1kHz 2.5 mVP-P Full Power Bandwidth VO = 1VRMS 20 MHz BW Small-Signal Bandwidth VS = ±5V 30 MHz VS = ±15V 40 MHz Differential Gain (Notes 4,5) Control = 0% or 100% 0.02 % Control = 25% or 75% 0.90 % Differential Phase (Notes 4,5) Control = 0% or 100% 0.02 DEG Control = 25% or 75% 0.55 DEG THD Total Harmonic Distortion Gain = 100% 0.002 % Gain = 50% 0.015 % Gain = 10% 0.4 % tr, tf Rise Time, Fall Time 10% to 90%, VO = 100mV 11 ns OS Overshoot VO = 100mV 3 % tPD Propagation Delay VO = 100mV 10 ns tS Settling Time 0.1%, ∆VO = 2V 65 ns
U W SIG AL A PLIFIER DC CHARACTERISTICS 0
°
C
≤
TA
≤
70
°
C, VS =
±
5V, VCM = 0V, VFS = 2.5V, IC = IFS = NULL = Open, Pins 5,10 = GND, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VOS Input Offset Voltage Either Input ● 2 5 mV Difference Between Inputs ● – 3 1 3 mV Input Offset Voltage Drift 10 µV/°C I + IN Noninverting Input Bias Current Either Input ● – 2.5 0.5 2.5 µA I – IN Inverting Input Bias Current Either Input ● – 30 10 30 µA Difference Between Inputs ● – 1 0.5 1 µA Inverting Input Bias Current Null Change Null (Pin 6) Open to V – ● – 280 – 170 – 60 µA en Input Noise Voltage Density f = 1kHz 2.7 nV/√Hz +in Noninverting Input Noise Current Density f = 1kHz 1.5 pA/√Hz –in Inverting Input Noise Current Density f = 1kHz 29 pA/√Hz RIN Input Resistance Either Noninverting Input ● 5 17 MΩ CIN Input Capacitance Either Noninverting Input ● 1.5 pF Input Voltage Range VS = ±5V ● ±3 ±3.2 V VS = 5V ● 2 3 V CMRR Common Mode Rejection Ratio VCM = – 3V to 3V ● 55 61 dB VS = 5V, VCM = 2V to 3V, VO = 2.5V ● 50 57 dB Inverting Input Current Common Mode Rejection VCM = – 3V to 3V ● 0.07 0.25 µA/V VS = 5V, VCM = 2V to 3V, VO = 2.5V ● 0.17 0.70 µA/V PSRR Power Supply Rejection Ratio VS = ±5V to ±15V ● 70 76 dB Noninverting Input Current Power Supply Rejection VS = ±5V to ±15V ● 30 100 nA/V Inverting Input Current Power Supply Rejection VS = ±5V to ±15V ● 30 200 nA/V 3
