GS6001-CR

GS6001/6002/6004 1MHZ CMOS Rail-to-Rail IO Opamp with RF Filter Features • Single-Supply Operation from +1.8V ~ +6V • Operating Temperature: -40°C ~ +125°C • Rail-to-Rail Input / Output • Small Package: • Gain-Bandwidth Product: 1MHz (Typ.) GS6001 Available in SOT23-5 and SC70-5 Packages • Low Input Bias Current: 1pA (Typ.) GS6002 Available in SOP-8 and MSOP-8 Packages • Low Offset Voltage: 3.5mV (Max.) GS6004 Available in SOP-14 and TSSOP-14 Packages • Quiescent Current: 75µA per Amplifier (Typ.) • Embedded RF Anti-EMI Filter General Description μ The GS6001 family have a high gain-bandwidth product of 1MHz, a slew rate of 0.8V/ s, and a quiescent current of 75 μ A/amplifier at 5V. The GS6001 family is designed to provide optimal performance in low voltage and low noise systems. They provide rail-to-rail output swing into heavy loads. The input common mode voltage range includes ground, and the maximum ℃ to input offset voltage is 3.5mV for GS6001 family. They are specified over the extended industrial temperature range (-40 +125 ℃). The operating range is from 1.8V to 6V. The GS6001 single is available in Green SC70-5 and SOT23-5 packages. The GS6002 dual is available in Green SOP-8 and MSOP-8 packages. The GS6004 Quad is available in Green SOP-14 and TSSOP-14 packages. Applications • ASIC Input or Output Amplifier • Audio Output • Sensor Interface • Piezoelectric Transducer Amplifier • Medical Communication • Medical Instrumentation • Smoke Detectors • Portable Systems Pin Configuration Figure 1. Pin Assignment Diagram V1 1/15 GS6001/6002/6004 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 -55°C Lead Temperature (soldering, 10sec) Package Thermal Resistance (TA=+25 +150°C +260°C ℃) SOP-8, θJA 125°C/W MSOP-8, θJA 216°C/W SOT23-5, 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. Package/Ordering Information MODEL GS6001 CHANNEL Single GS6002 Dual GS6004 Quad V1 PACKAGE PACKAGE MARKING DESCRIPTION OPTION INFORMATION GS6001-CR SC70-5 Tape and Reel,3000 6001 GS6001-TR SOT23-5 Tape and Reel,3000 6001 GS6001Y-CR SC70-5 Tape and Reel,3000 6001Y GS6001Y-TR SOT23-5 Tape and Reel,3000 6001Y GS6002-SR SOP-8 Tape and Reel,4000 GS6002 GS6002-MR MSOP-8 Tape and Reel,3000 GS6002 GS6004-TR TSSOP-14 Tape and Reel,3000 GS6004 GS6004-SR SOP-14 Tape and Reel,2500 GS6004 ORDER NUMBER 2/15 GS6001/6002/6004 Electrical Characteristics (At VS = +5V, RL = 100kΩ connected to VS/2, and VOUT = VS/2, unless otherwise noted.) GS6001/2/4 PARAMETER SYMBOL CONDITIONS TYP +25 ℃ MIN/MAX OVER TEMPERATURE +25 ℃ -40 ℃ to +85℃ UNITS MIN/MAX mV MAX INPUT CHARACTERISTICS Input Offset Voltage VOS VCM = VS/2 0.8 3.5 5.6 Input Bias Current IB 1 pA TYP Input Offset Current IOS 1 pA TYP Common-Mode Voltage Range VCM -0.1 to +5.6 V TYP Common-Mode Rejection Ratio CMRR Open-Loop Voltage Gain Input Offset Voltage Drift VS = 5.5V VS = 5.5V, VCM = -0.1V to 4V 70 62 62 VS = 5.5V, VCM = -0.1V to 5.6V 68 56 55 RL = 5kΩ, VO = +0.1V to +4.9V 80 70 70 RL = 10kΩ, VO = +0.1V to +4.9V 100 94 85 dB MIN dB MIN AOL ∆VOS/∆T 2.7 µV/ ℃ TYP OUTPUT CHARACTERISTICS VOH RL = 100kΩ 4.997 4.980 4.970 V MIN VOL RL = 100kΩ 5 20 30 mV MAX VOH RL = 10kΩ 4.992 4.970 4.960 V MIN VOL RL = 10kΩ 8 30 40 mV MAX 84 60 45 mA MIN 75 60 45 1.8 1.8 V MIN 6 6 V MAX 82 60 58 dB MIN 75 110 125 µA MAX 1 MHz TYP Output Voltage Swing from Rail ISOURCE Output Current RL = 10Ω to VS/2 ISINK POWER SUPPLY Operating Voltage Range Power Supply Rejection Ratio PSRR Quiescent Current / Amplifier IQ VS = +2.5V to +6V, VCM = +0.5V DYNAMIC PERFORMANCE (CL = 100pF) Gain-Bandwidth Product Slew Rate Settling Time to 0.1% GBP SR G = +1, 2V Output Step 0.8 V/µs TYP tS G = +1, 2V Output Step 5.3 µs TYP VIN ·Gain = VS 2.6 µs TYP f = 1kHz 27 nV / Hz TYP f = 10kHz 20 nV / Hz TYP Overload Recovery Time NOISE PERFORMANCE Voltage Noise Density V1 en 3/15 GS6001 GS6001/6002/6004 Typical Performance characteristics o At TA=+25 C, Vs=5V, RL=100KΩ connected to VS/2 and VOUT= VS/2, unless otherwise noted. Supply Current (µA) CL=100pF RL=100kΩ =100 G=+1 Time(10µs/div) Time(2µs/div s/div) CMRR vs. Frequency PSRR vs. Frequency PSRR (dB) Frequency (kHz) Frequency (kHz) Supply Current vs. Temperature Overload Recovery Time Vs=1.8V Vs=5.5V Vs=5V G=-5 VIN=500mV Vs=5V ℃ Temperature ( ) V1 Small Signal Transient Response Output Voltage (50mV/div) CL=100pF RL=100kΩ G=+1 CMRR (dB) Output Voltage (250mV/div) Large Signal Transient Response Time(2µs/div s/div) 4/15 GS6001/6002/6004 Typical Performance characteristics o At TA=+25 C, RL=100KΩ connected to VS/2 and VOUT= VS/2, unless otherwise noted. Output Voltage Swing vs.Output Current Sourcing Current Output Voltage Swing vs.Output Current ℃ Sourcing Current ℃ Vs=3V 135 ℃ 25 Sinking Current Vs=5V ℃ 135 ℃ 25 ℃ -50 Sinking Current Input Voltage Noise Spectral Density vs. Frequency Open Loop Gain, Phase Shift vs. Frequency Open Loop Gain (dB) Phase Shift (Degrees) Output Current(mA) Voltage Noise (nV/√Hz) Output Current(mA) Frequency (kHz) V1 ℃ -50 ℃ -50 Output Voltage (V) Output Voltage (V) -50 Frequency (kHz) 5/15 GS6001/6002/6004 Application Note Size GS6001 family series op amps are unity-gain stable and suitable for a wide range of general-purpose applications. The small footprints of the GS6001 family packages save space on printed circuit boards and enable the design of smaller electronic products. Power Supply Bypassing and Board Layout GS6001 family series operates from a single 1.8V to 6V supply or dual ±0.9V to ±3V 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 75µA per channel) of GS6001 family will help to maximize battery life. They are ideal for battery powered systems Operating Voltage GS6001 family operates under wide input supply voltage (1.8V to 6V). In addition, all temperature specifications apply from -40 o o 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 Input The input common-mode range of GS6001 family extends 100mV beyond the supply rails (VSS-0.1V to VDD+0.1V). This is achieved by using complementary input stage. For normal operation, inputs should be limited to this range. 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 GS6001 family can typically swing to less than 10mV from supply rail in light resistive loads (>100kΩ), and 60mV of supply rail in moderate resistive loads (10kΩ). Capacitive Load Tolerance The GS6001 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. 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 V1 6/15 GS6001/6002/6004 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 7/15 GS6001/6002/6004 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 GS6001 family. Figure 4. Differential Amplifier VOUT= ( RR13++RR24 ) RR14 VIN − RR12 VIP +( RR13++RR24 ) RR13 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 8/15 GS6001/6002/6004 Instrumentation Amplifier The triple GS6001 family can be used to build a three-op-amp instrumentation amplifier as shown in Figure 6. The amplifier in Figure 6 is a high input impedance differential amplifier with gain of R2/R1. The two differential voltage followers assure the high input impedance of the amplifier. Figure 6. Instrument Amplifier . V1 9/15 GS6001/6002/6004 Package Information MSOP-8 V1 10/15 GS6001/6002/6004 SOP-8 V1 11/15 GS6001/6002/6004 SOT23-5 V1 12/15 GS6001/6002/6004 SC70-5 V1 13/15 GS6001/6002/6004 TSSOP-14 V1 14/15 GS6001/6002/6004 SOP-14 V1 15/15