Document
LMH6732 High Speed Op Amp with Adjustable Bandwidth
March 2004
LMH6732 High Speed Op Amp with Adjustable Bandwidth
General Description
The LMH6732 is a high speed op amp with a unique combination of high performance, low power consumption, and flexibility of application. The supply current is adjustable, over a continuous range of more than 10 to 1, with a single resistor, RP. This feature allows the device to be used in a wide variety of high performance applications including device turn on/ turn off (Enable/ Disable) for power saving or multiplexing. Typical performance at any supply current is exceptional. The LMH6732’s design has been optimized so that the output is well behaved, eliminating spurious outputs on "Enable". The LMH6732’s combination of high performance, low power consumption, and large signal performance makes it ideal for a wide variety of remote site equipment applications such as battery powered test instrumentation and communications gear. Other applications include video switching matrices, ATE and phased array radar systems. The LMH6732 is available in the SOIC and SOT23-6 packages. To reduce design times and assist in board layout, the LMH6732 is supported by an evaluation board.
Features
n Exceptional Performance at any Supply Current: VS = ± 5V, TA = 25˚C, AV = +2V/V, VOUT = 2VPP, Typical unless Noted: ICC (mA) 1.0 3.4 9.0 -3dB BW (MHz) 55 180 540 DG/DP (%/ deg.) PAL 0.020/ 0.036 0.022 / 0.017 0.025 / 0.010 Slew Rate (V/µs) 400 2100 2700 THD 1MHz (dBc) -70.0 -78.5 -79.6 Output Current (mA) 9 45 115
n Ultra High Speed (−3dB BW) n n n n n n
1.5GHz (ICC = 10mA, 0.25VPP) Single resistor adjustability of supply current Fast enable/ disable capability 20ns (ICC = 9mA) "Popless" output on "Enable" 15mV (ICC = 1mA) < 1µA Ultra low disable current Unity gain stable Improved Replacement for CLC505 & CLC449
Applications
n n n n Battery powered systems Video switching and distribution Remote site instrumentation Mobile communications gear
−3dB BW vs. ICC
Turn-On/Off Characteristics
20060262
20060250
© 2004 National Semiconductor Corporation
DS200602
www.national.com
LMH6732
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. VS IOUT ICC Common Mode Input Voltage Maximum Junction Temperature Storage Temperature Range Soldering Information Infrared or Convection (20 sec) Wave Soldering (10 sec) ESD Tolerance (Note 4) 235˚C 260˚C
Human Body Model Machine Model
2000V 200V
± 6.75V
(Note 3) 14mA V− to V+ +150˚C −65˚C to +150˚C
Operating Ratings (Note 1)
Thermal Resistance Package 8-Pin SOIC 6-Pin SOT23 θJC (˚C/W) 65˚C/W 120˚C/W θJA (˚C/W) 166˚C/W 198˚C/W −40˚C to +85˚C
Operating Temperature Nominal Supply Voltage Operating Supply Current
± 4.5V to ± 6V
0.5mA < ICC < 12mA
Electrical Characteristics ICC = 9mA
Symbol SSBW LSBW GF0.1dB GFP GFR LPD DG DP TRS TRL TS OS SR Parameter -3dB Bandwidth -3dB Bandwidth 0.1dB Gain Flatness Frequency Response Peaking Frequency Response Rolloff Linear Phase Deviation Differential Gain Differential Phase Rise Time Fall Time Settling Time to 0.04% Overshoot Slew Rate
(Note 2) AV = +2, RF = 700Ω, VS = ± 5V, RL = 100Ω, RP = 39kΩ; Unless otherwise specified. Conditions VOUT = 2VPP VOUT = 4.0VPP VOUT = 2VPP DC to 200MHz, VOUT = 2VPP DC to 200MHz, VOUT = 2VPP DC to 200MHz, VOUT = 2VPP DC to 140MHz, VOUT = 2VPP RL = 150Ω, 4.43MHz RL = 150Ω, 4.43MHz 2V Step 2V Step AV = −1, 2V Step 2V Step 5V Step, 40% to 60% (Note 5) 2VPP, 20MHz 2VPP, 20MHz 2VPP, 1MHz Min (Note 6) Typ (Note 6) 540 315 180 0.01 0.15 0.6 0.1 0.025 0.010 0.8 0.9 18 1 2700 Max (Note 6) Units MHz MHz MHz dB dB deg % deg
Frequency Domain Response
Time Domain Response ns ns % V/µs
Distortion And Noise Response HD2 HD3 THD V IN INN SNF INV VIO DVIO
N
2nd Harmonic Distortion 3rd Harmonic Distortion Total Harmonic Distortion Input Referred Voltage Noise Input Referred Inverting Noise Current Input Referred Non-Inverting Noise Current Noise Floor Total Integrated Input Noise Input Offset Voltage Input Offset Voltage Average Drift
−60 −64 −79.6 2.5 9.7 1.8 −154 60
dBc dBc dBc nV/ pA/ pA/ dBm1Hz µV
> 1MHz > 1MHz > 1MHz > 1MHz
1MHz to 200MHz
Static, DC Performance
± 3.0
(Note 8) 16
± 8.0
9.9
mV µV/˚C
www.national.com
2
LMH6732
Electrical Characteristics ICC = 9mA
Symbol IBN DIBN IBI DIBI +PSRR −PSRR CMRR ICC ICCI RIN CIN ROUT VO VOL CMIR IO TON TOFF VO glitch FDTH Common Mode Input Range Output Current Turn-on Time Turn-off Time Turn-on Glitch Feed-Through Parameter Input Bias Current Input Bias Current Average Drift Input Bias Current Input Bias Current Average Drift Positive Power Supply Rejection Ratio Negative Power Supply Rejection Ratio Common Mode Rejection Ratio Supply Current Supply Current During Shutdown Input Resistance Input Capacitance Output Resistance Output Voltage Range
(Note 2) (Continued) AV = +2, RF = 700Ω, VS = ± 5V, RL.