GS8091-TR

GS8091/8092/8094/8091N/8092N 350MHZ CMOS Rail-to-Rail Output Opamps Features • Single-Supply Operation from +2.5V ~ +5.5V GS8091 Available in SOT23-5 and SC70-5 Packages • Rail-to-Rail Output GS8092 Available in SOP-8 and MSOP-8 Packages • -3dB Bandwidth(G=+1): 350MHz (Typ.) GS8094 Available in SOP-14 and TSSOP-14 Packages • Low Input Bias Current: 1pA (Typ.) GS8091N Available in SOT23-6 and SC70-6 Packages • Quiescent Current: 4.2mA/Amplifier (Typ.) GS8092N Available in MSOP-10 Packages • Operating Temperature: -40°C ~ +125°C • Small Package: General Description The GS8091/1N(single), GS8092/2N(dual), GS8094(quad) are rail-to-rail output voltage feedback amplifiers offering ease of use and low cost. They have bandwidth and slew rate typically found in current feedback amplifiers. All have a wide input common-mode voltage range and output voltage swing, making them easy to use on single supplies as low as 2.5V. Despite being low cost, the GS8091 series provide excellent overall performance. They offer wide bandwidth to 350MHz (G = +1) along with 0.1dB flatness out to 58MHz (G = +2) and offer a typical low power of 4.2mA/amplifier. The GS8091 series is low distortion and fast settling make it ideal for buffering high speed A/D or D/A converters. The GS8091/2N has a power-down disable feature that reduces the supply current to 75µA. These features make the GS8091/2N ideal for portable and battery-powered applications where size and power are critical. All are specified over the extended -40 ℃ to +125℃ temperature range. Applications • Imaging • Photodiode Preamp • DVD/CD • Filters • Professional Video and Cameras • Hand Sets • Base Stations • A-to-D Driver V1 G=+1 RL=1K Ω RF=24 Ω Vo=0.1Vp-p G=+2 RL=150Ω RF=600Ω G=+1 RL=150 Ω RF=24 Ω 1/20 GS8091/8092/8094/8091N/8092N Pin Configuration GS8094 GS8092 8 VDD OUTA 1 INA- 2 7 OUTB INA+ 3 6 INB- VSS 4 5 INB+ OUTA 1 14 OUTD INA- 2 13 IND- INA+ 3 12 IND+ VDD 4 11 VSS INB+ 5 10 INC+ INB- 6 9 INC- OUTB 7 8 OUTC SOP-8/MSOP-8 SOP-14/TSSOP-14 Figure 1. Pin Assignment Diagram Absolute Maximum Ratings Condition Min Max -0.5V +7.5V Analog Input Voltage (IN+ or IN-) Vss-0.5V VDD+0.5V PDB Input Voltage Vss-0.5V +7V -40°C +125°C Power Supply Voltage (VDD to Vss) Operating Temperature Range Junction Temperature +160°C Storage Temperature Range Lead Temperature (soldering, 10sec) Package Thermal Resistance (TA=+25 -55°C ℃) +150°C +260°C SOP-8, θJA 125°C/W MSOP-8, θJA 216°C/W SOT23-5, θJA 190°C/W SOT23-6, θJA 190°C/W SC70-5, θJA 333°C/W ESD Susceptibility HBM 6KV MM 400V Note: Stress greater than those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions outside those indicated in the operational sections of this specification are not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. V1 2/20 GS8091/8092/8094/8091N/8092N Package/Ordering Information PACKAGE PACKAGE MARKING DESCRIPTION OPTION INFORMATION GS8091-CR SC70-5 Tape and Reel,3000 8091 GS8091-TR SOT23-5 Tape and Reel,3000 8091 GS8092-SR SOP-8 Tape and Reel,4000 GS8092 GS8092-MR MSOP-8 Tape and Reel,3000 GS8092 GS8094-TR TSSOP-14 Tape and Reel,3000 GS8094 GS8094-SR SOP-14 Tape and Reel,2500 GS8094 Single With GS8091N-CR SC70-6 Tape and Reel,3000 8091N shutdown GS8091N-TR SOT23-6 Tape and Reel,3000 8091N GS8092N-MR MSOP-10 Tape and Reel,2500 GS8092N MODEL CHANNEL GS8091 Single GS8092 Dual GS8094 Quad GS8091N GS8092N V1 Dual With shutdown ORDER NUMBER 3/20 GS8091/8092/8094/8091N/8092N Electrical Performance Characteristics (G= +2, RF=600Ω, RG=600Ω, and RL=150Ω connected to VS/2, unless otherwise noted. Typical values are at TA =+25°C.) GS8091/52/54/51N/52N PARAMETER CONDITIONS TYP MIN/MAX OVER TEMPERATURE ℃to +25℃ to70℃ 85℃ 0 +25 ℃ ℃ -40 -40 ℃ to125 MIN/ ℃ UNITS MAX 335 MHz TYP 330 MHz TYP G = +2, Vo = 0.1V p-p, RL = 50Ω 79 MHz TYP G = +2, Vo = 0.1V p-p, RL = 150Ω 130 MHz TYP G = +2, Vo = 0.1V p-p, RL = 1kΩ 165 MHz TYP DYNAMIC PERFORMANCE -3dB Small Signal Bandwidth G = +1, Vo = 0.1V p-p, RF G = +2, Vo = 0.1V p-p, Gain-Bandwidth Product Ω = 24Ω, R G = +1, Vo = 0.1V p-p, RF = 24 , RL = 150Ω L = 1kΩ RL = 10kΩ 172 MHz TYP G = +10, RL = 150Ω 180 MHz TYP G = +10, RL = 1kΩ 195 MHz TYP 71 MHz TYP V/ s Ω Bandwidth for 0.1dB Flatness G = +2, Vo = 0.1V p-p, RL = 150 , RF =600Ω Slew Rate G = +1, 2V Output Step 119/-232 G = +2, 2V Output Step 135/-180 G = +2, 4V Output Step 142/-206 μ V/μs V/μs G = +2, Vo = 0.2Vp-p, 10% to 90% 3.5 ns TYP G = +2, Vo = 2Vp-p, 10% to 90% 8.5 ns TYP Settling Time to 0.1% G = +2, 2V Output Step 35 ns TYP Overload Recovery Time VIN 14.5 ns TYP 4.3 nV/ Hz TYP Rise-and-Fall Time · G = +VS TYP TYP TYP NOISE/DISTORTION PERFORMANCE Input Voltage Noise f = 1MHz Differential Gain Error (NTSC) G = +2, RL = 150Ω 0.004 % TYP Differential Phase Error (NTSC) G = +2, RL = 150Ω 0.08 degree TYP mV MAX DC PERFORMANCE Input Offset Voltage (VOS) ±2 Input Offset Voltage Drift 2 μV/℃ TYP Input Bias Current (IB) 1 PA TYP Input offset Current (IOS) 2 PA TYP Open-Loop Gain (AOL) ±8 ±8.5 ±9 ±9.3 VO = 0.3V to 4.7V, RL = 150Ω 80 75 74 74 70 dB MIN VO = 0.2V to 4.8V, RL = 1kΩ 104 92 91 91 80 dB MIN V TYP dB MIN INPUT CHARACTERISTICS Input Common-Mode Voltage Range (VCM) Common-Mode Rejection Ratio (CMRR) V1 -0.2 to +3.8 VCM = -0.1V to +3.5V 80 66 65 65 62 4/20 GS8091/8092/8094/8091N/8092N Electrical Performance Characteristics (G= +2, RF=600Ω, RG=600Ω, and RL=150Ω connected to VS/2, unless otherwise noted. Typical values are at TA =+25°C.) GS8091/52/54/51N/52N PARAMETER CONDITIONS TYP MIN/MAX OVER TEMPERATURE ℃ to70℃ 0 +25 ℃ +25 ℃ ℃to 85℃ -40 ℃ to125℃ -40 MIN/ UNITS MAX OUTPUT CHARACTERISTICS RL = 150Ω 0.12 V TYP RL = 1kΩ 0.03 V TYP mA MIN 0.045 Ω TYP Turn-On Time 108 ns TYP Turn-Off Time 60 ns TYP Output Voltage Swing from Rail Output Current Closed-Loop Output Impedance 120 ＜ f 100kHz 100 98 93 87 POWER-DOWN DISABLE (GS8091/2N only) DISABLE Voltage-Off 0.8 V MAX DISABLE Voltage-On 2 V MIN POWER SUPPLY Operating Voltage Range 2.5 2.7 2.7 2.7 V MIN 5.5 5.5 5.5 5.5 V MAX Quiescent Current (per amplifier) 4.2 5.3 5.6 5.7 6.1 mA MAX Supply Current when Disabled per 75 120 130 132 137 μA MAX 80 67 67 65 62 dB MIN amplifier(GS8091/2N only) Power Supply Rejection Ratio (PSRR) V1 ∆VS = +2.7V to +5.5V, VCM = (-VS) +0.5 5/20 GS8091/8092/8094/ 94/8091N/8092N Typical Performance characteristics (Vs=+5V,G= +2, RF=600Ω,RG=600Ω,and RL=150Ω connected to Vs/2, unless otherwise noted. Typical values are at TA =+25°C.) Non-Inverting Small-Signal Signal Step Response Output Voltage (50mV/div) Time (50ns/div) Time (50n ns/div) Supply Current vs. Temperature Sutdown Current vs. Temperature Vs=5V Vs=3V Vs=2.7V Shutdown Current ( A) Supply Current (mA) Output Voltage (500mV/div) Non-Inverting Large-Signal Signal Step Response µ Vs=5V Vs=2.7V ℃ ℃ Temperature ( ) Temperature ( ) Output Voltage Swing vs. Output Current Output Voltage vs. Output Current Sourcing Current Output Voltage (V) ℃ 25 ℃ -50 Vs=5V ℃ ℃ 25 ℃ -50 135 Sinking Current Output Current (mA) V1 Sourcing Current ℃ 135 Output Voltage (V) ℃ 135 ℃ 25 ℃ -50 Vs=3V ℃ -50 ℃ 135 ℃ 25 Sinking Current Output Current (mA) 6/20 GS8091/8092/8094/8091N/8092N Typical Performance characteristics (Vs=+5V,G= +2, RF=600Ω,RG=600Ω,and RL=150Ω connected to Vs/2, unless otherwise noted. Typical values are at TA =+25°C.) Non-Inverting Small Signal Frequency Response Inverting Small Signal Frequency Response Vo=0.1Vp-p Normalized Gain (dB) ormalized Gain (dB) Vo=0.1Vp-p G=+2 G=+5 G=+10 G=+1 RF=24 Ω G=-5 G=-10 Frequency(MHz) Frequency Response For Various RL 0.1dB Gain Flatness For Various RF RL=1KΩ RL=150Ω RL=50Ω RF=510Ω Normalized Gain (dB) CL=0pF Vo=0.1Vp-p CL=0pF Vo=0.1Vp-p RF=600Ω RF=620Ω Frequency (MHz) Frequency (MHz) Frequency Response For Various CL Frequency Response vs.Capacitive Load CL=0pF Vo=0.1Vp-p Vo=0.1Vp-p CL=100pF CL=47pF CL=6pF Frequency (MHz) Normalized Gain (dB) Normalized Gain (dB) Normalized Gain (dB) G=-2 Frequency(MHz) RL=10KΩ V1 G=-1 CL=6pF RS=100Ω CL=100pF RS=24Ω CL=47pF RS=40.2Ω Frequency (MHz) 7/20 GS8091/8092/8094/8091N/8092N Typical Performance characteristics (Vs=+5V,G= +2, RF=600Ω,RG=600Ω,and RL=150Ω connected to Vs/2, unless otherwise noted. Typical values are at TA =+25°C.) Input Voltage Noise Spectral Density vs. Frequency Overload Recovery Time ± Frequency(KHz) Time(20ns/div) Large-Signal Disable/Enable Response Closed-Loop Output Impedance vs Frequency Vout=1.5V VS=5V fIN=2MHz G=+2 Time (500n/div) V1 Output Impedance (ohm) Output Voltage (1V/div) Voltage Noise (nV/√Hz) VS= 2.5V VIN=2.32V G=+2 Frequency (MHz) 8/20 GS8091/8092/8094/8091N/8092N Application Note Driving Capacitive Loads GS809X series op amps are unity-gain stable and suitable for a wide range of general-purpose applications. The small footprints of the GS809X series packages save space on printed circuit boards and enable the design of smaller electronic products. Power Supply Bypassing and Board Layout GS809X series operates from a single 2.5V to 5.5V supply or dual ±1.25V to ±2.75V supplies. For best performance, a 0.1µF ceramic capacitor should be placed close to the VDD pin in single supply operation. For dual supply operation, both VDD and VSS supplies should be bypassed to ground with separate 0.1µF ceramic capacitors. Low Supply Current The low supply current (typical 4.2mA per channel) of GS809X series will help to maximize battery life. They are ideal for battery powered systems Operating Voltage GS809X series operate under wide input supply voltage (2.5V to 5.5V). In addition, all temperature specifications apply from o o -40 C to +125 C. Most behavior remains unchanged throughout the full operating voltage range. These guarantees ensure operation throughout the single Li-Ion battery lifetime Rail-to-Rail Output Rail-to-Rail output swing provides maximum possible dynamic range at the output. This is particularly important when operating in low supply voltages. The output voltage of GS809X series can typically swing to less than 30mV from supply rail in light resistive loads (>1kΩ), and 120mV of supply rail in moderate resistive loads (150Ω). Capacitive Load Tolerance The GS809X family is optimized for bandwidth and speed, not for driving capacitive loads. Output capacitance will create a pole in the amplifier’s feedback path, leading to excessive peaking and potential oscillation. If dealing with load capacitance is a requirement of the application, the two strategies to consider are (1) using a small resistor in series with the amplifier’s output and the load capacitance and (2) reducing the bandwidth of the amplifier’s feedback loop by increasing the overall noise gain. Figure 2. shows a unity gain follower using the series resistor strategy. The resistor isolates the output from the capacitance and, more importantly, creates a zero in the feedback path that compensates for the pole created by the output capacitance. Figure 2. Indirectly Driving a Capacitive Load Using Isolation Resistor The bigger the RISO resistor value, the more stable VOUT will be. However, if there is a resistive load RL in parallel with the capacitive load, a voltage divider (proportional to RISO/RL) is formed, this will result in a gain error. V1 9/20 GS8091/8092/8094/8091N/8092N The circuit in Figure 3 is an improvement to the one in Figure 2. RF provides the DC accuracy by feed-forward the VIN to RL. CF and RISO serve to counteract the loss of phase margin by feeding the high frequency component of the output signal back to the amplifier’s inverting input, thereby preserving the phase margin in the overall feedback loop. Capacitive drive can be increased by increasing the value of CF. This in turn will slow down the pulse response. Figure 3. Indirectly Driving a Capacitive Load with DC Accuracy V1 10/20 GS8091/8092/8094/8091N/8092N Typical Application Circuits Differential amplifier The differential amplifier allows the subtraction of two input voltages or cancellation of a signal common the two inputs. It is useful as a computational amplifier in making a differential to single-end conversion or in rejecting a common mode signal. Figure 4. shown the differential amplifier using GS809X. R2 R1 VIN VOUT R3 VIP + R4 VREF Figure 4. Differential Amplifier VOUT= ( RR13++RR24 ) RR14 VIN − RR12 VIP +( RR13++RR24 ) RR31 VREF If the resistor ratios are equal (i.e. R1=R3 and R2=R4), then VOUT = R2 R1 (VIP − VIN ) + VREF Low Pass Active Filter The low pass active filter is shown in Figure 5. The DC gain is defined by –R2/R1. The filter has a -20dB/decade roll-off after its corner frequency ƒC=1/(2πR3C1). Figure 5. Low Pass Active Filter V1 11/20 GS8091/8092/8094/8091N/8092N Driving Video The GS809X can be used in video applications like in Figure 6. Figure 6. Typical video driving V1 12/20 GS8091/8092/8094/8091N/8092N Package Information MSOP8 V1 13/20 GS8091/8092/8094/8091N/8092N SOP8 V1 14/20 GS8091/8092/8094/8091N/8092N SOT23-5 V1 15/20 GS8091/8092/8094/8091N/8092N SOT23-6 V1 16/20 GS8091/8092/8094/8091N/8092N MSOP-10 V1 17/20 GS8091/8092/8094/8091N/8092N SC70-5 V1 18/20 GS8091/8092/8094/8091N/8092N SOP-14 V1 19/20 GS8091/8092/8094/8091N/8092N TSSOP-14 V1 20/20