CBM8551AS8

CBM8551-CBM8552-CBM8554 OPERATION INSTRUCTION Features  Description Single-Supply Operation from +1.8V ~ The CBM855X amplifier +5.5V single/dual/quad  Rail-to-Rail Input / Output zero-drift CMOS operational amplifiers, the  Gain-Bandwidth Product: 1.8MHz (Typ. amplifiers @25°C) rail-to-rail Low Input Bias Current: 20pA (Typ. single-supply operation from 1.8V to 5.5V. @25°C) CBM855X uses chopper stabilized technique  Low Offset Voltage: 30µV (Max. @25°C) to provide very low offset voltage (less than  Quiescent Current: 180µA per Amplifier 5µV maximum) and near zero drift over (Typ) temperature. Low quiescent supply current of  Operating Temperature: -45°C ~ +125°C 180µA per amplifier and very low input bias  Zero Drift: 0.03µV/oC (Typ) current of 20pA make the devices an ideal  Embedded RF Anti-EMI Filter choice for low offset, low power consumption  Small Package: and CBM8551Available in SOT23-5 and SOP-8 CBM855X offers excellent CMRR without the Packages crossover CBM8552 Available in MSOP-8 and SOP-8 complementary input stages. This design Packages results in superior performance for driving CBM8554 Available in SOP-14 and analog-to-digital converters (ADCs) without TSSOP-14 Packages degradation of differential linearity.  high supply, is offer micro-power, bandwidth inputs and impedance associated of 1.8MHz, outputs, and applications. with The traditional The CBM8551 is available in SOT23-5 and Application SOP-8 packages. And the CBM8552 is  Transducer Application available in MSOP-8 and SOP-8 packages. The  Temperature Measurements CBM8554 Quad is available in Green SOP-14  Electronics Scales and  Handheld Test Equipment temperature range of -45℃ to +125℃ over all  Battery-Powered Instrumentation supply TSSOP-14 voltages packages. offers The extended additional design flexibility. 1 www.corebai.com CBM8551-CBM8552-CBM8554 OPERATION INSTRUCTION PIN CONFIGURATIONS 2 www.corebai.com CBM8551-CBM8552-CBM8554 OPERATION INSTRUCTION ABSOLUTE MAXIMUM RATINGS Condition Min Max Power Supply Voltage (VDD to VSS) -0.5V +7.5V Analog Input Voltage (IN+ or IN-) VSS-0.5V VDD+0.5V PDB Input Voltage VSS-0.5V +7V -45℃ +125℃ Operating Temperature Range Junction Temperature +160℃ Storage Temperature Range -55℃ Lead Temperature (soldering, 10sec) +150℃ +260℃ Package Thermal Resistance (TA=+25℃) SOP-8, θJA 125℃/W MSOP-8, θJA 216℃/W SOT23-5, θJA 190℃/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. 3 www.corebai.com CBM8551-CBM8552-CBM8554 OPERATION INSTRUCTION ELECTRICAL CHARACTERISTICS VS=+5V, VCM=+2.5V, VO=+2.5V, TA=+25℃,unless otherwise noted. PARAMETER CONDITION MIN TYP MAX UNIT Input Offset Voltage (VOS) 1 30 μV Input Bias Current (IB) 20 pA Input Offset Current (IOS) 10 pA VCM = 0V to 5V 110 dB RL = 10kΩ, VO = 0.3V to 4.7V 145 dB 30 nV/℃ RL = 100kΩ to - VS 4.998 V RL = 10kΩ to - VS 4.994 V RL = 100kΩ to + VS 2 mV RL = 10kΩ to + VS 5 mV RL =10Ω to - VS 60 mA 65 mA INPUT CHARACTERISTICS Common-Mode Rejection Ratio (CMRR) Large Signal Voltage Gain ( AVO) Input Offset Voltage Drift (∆VOS/∆T) OUTPUT CHARACTERISTICS Output Voltage High (VOH) Output Voltage Low (VOL) Short Circuit Limit (ISC) Output Current (IO) POWER SUPPLY Power Supply Rejection Ratio (PSRR) VS = 2.5V to 5.5V 115 dB Quiescent Current (IQ) VO = 0V, RL = 0Ω 180 μA Gain-Bandwidth Product (GBP) G = +100 1.8 MHz Slew Rate (SR) RL = 10kΩ 0.95 V/μs 0.10 ms 0Hz to 10Hz 0.3 μVp-p f = 1kHz 38 DYNAMIC PERFORMANCE Overload Recovery Time NOISE PERFORMANCE Voltage Noise (en p-p) Voltage Noise Density (en) 4 www.corebai.com nV/ t CBM8551-CBM8552-CBM8554 OPERATION INSTRUCTION TYPICAL CHARACTERISTICS 5 www.corebai.com CBM8551-CBM8552-CBM8554 OPERATION INSTRUCTION TYPICAL CHARACTERISTICS 6 www.corebai.com CBM8551-CBM8552-CBM8554 OPERATION INSTRUCTION APPLICATION NOTES Size CBM855X series op amps are unity-gain stable and suitable for a wide range of general-purpose applications. The small footprints of the CBM855X series packages save space on printed circuit boards and enable the design of smaller electronic products. Power Supply Bypassing and Board Layout CBM855X series operates from a single 1.8V to 5.5V supply or dual ±0.9V 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 180uA per channel) of CBM855X series will help to maximize battery life. They are ideal for battery powered systems Operating Voltage CBM855X series operate under wide input supply voltage (1.8V to 5.5V). In addition, all temperature specifications apply from -40℃ to +125℃. 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 CBM855X series 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 CBM855X series can typically swing to less than 5mV from supply rail in light resistive loads (>100kΩ), and 60mV of supply rail in moderate resistive loads (10kΩ). Capacitive Load Tolerance The CBM855X 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. 7 www.corebai.com CBM8551-CBM8552-CBM8554 OPERATION INSTRUCTION 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 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 8 www.corebai.com CBM8551-CBM8552-CBM8554 OPERATION INSTRUCTION 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 CBM855X. Figure 4. Differential Amplifier 왠䗸 = 왠䗸 = If the resistor ratios are equal (i.e. R1=R3 and R2=R4), then 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 9 www.corebai.com CBM8551-CBM8552-CBM8554 OPERATION INSTRUCTION Instrumentation Amplifier The triple CBM855X 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 10 www.corebai.com CBM8551-CBM8552-CBM8554 OPERATION INSTRUCTION PACKAGE OUTLINE DIMENSIONS SOT23-5 Symbol Dimensions In Millimeters Dimensions Inches Min Max Min Max A 1.050 1.250 0.041 0.049 A1 0.000 0.100 0.000 0.004 A2 1.050 1.150 0.041 0.045 b 0.300 0.500 0.012 0.020 c 0.100 0.200 0.004 0.008 D 2.820 3.020 0.111 0.119 E 1.500 1.700 0.059 0.067 E1 2.650 2.950 0.104 0.116 e 0.950 BSC 0.037 BSC e1 1.900 BSC 0.075BSC L 0.300 0.600 0.012 0.024 θ 0° 8° 0° 8° 11 www.corebai.com CBM8551-CBM8552-CBM8554 OPERATION INSTRUCTION MSOP-8 Symbol Dimensions In Millimeters Dimensions Inches Min Max Min Max A 0.820 1.100 0.032 0.043 A1 0.020 0.150 0.001 0.006 A2 0.750 0.950 0.030 0.037 b 0.250 0.380 0.010 0.015 c 0.090 0.230 0.004 0.009 D 2.900 3.100 0.114 0.122 E 2.900 3.100 0.114 0.122 E1 4.750 5.050 0.187 0.199 e 0.650 BSC 0.026 BSC L 0.400 0.800 0.016 0.031 θ 0° 6° 0° 6° 12 www.corebai.com CBM8551-CBM8552-CBM8554 OPERATION INSTRUCTION TSSOP-14 Symbol Dimensions In Millimeters Min TYP A Max 1.200 A1 0.050 A2 0.900 b 0.200 0.280 c 0.100 0.190 D 4.860 4.960 5.060 E 6.200 6.400 6.600 E1 4.300 4.400 4.500 e L 0.150 1.000 1.050 0.650 BSC 0.450 0.600 L1 1.000 REF L2 0.250 BSC R 0.090 θ 1° 0.750 8° 13 www.corebai.com CBM8551-CBM8552-CBM8554 OPERATION INSTRUCTION SOIC-8(SOP8) Symbol Dimensions In Millimeters Dimensions Inches Min Max Min Max A 1.350 1.750 0.053 0.069 A1 0.100 0.250 0.004 0.010 A2 1.350 1.550 0.053 0.061 b 0.330 0.510 0.013 0.020 c 0.170 0.250 0.006 0.010 D 4.700 5.100 0.185 0.200 E 3.800 4.000 0.150 0.157 E1 5.80 6.200 0.228 0.244 e 1.270 BSC 0.050 BSC L 0.400 1.270 0.016 0.050 θ 0° 8° 0° 8° 14 www.corebai.com CBM8551-CBM8552-CBM8554 OPERATION INSTRUCTION SOIC-14(SOP14) Symbol Dimensions In Millimeters Dimensions Inches Min Max Min Max A 1.350 1.750 0.053 0.069 A1 0.100 0.250 0.004 0.010 A2 1.250 1.650 0.049 0.065 A3 0.550 0.750 0.022 0.030 b 0.360 0.490 0.014 0.019 D 8.530 8.730 0.336 0.344 E 5.800 6.200 0.228 0.244 E1 3.800 4.000 0.150 0.157 e L 1.270 BSC 0.450 0.050 BSC 0.800 0.018 0.032 L1 1.040 REF 0.040 REF L2 0.250 BSC 0.010 BSC R 0.070 0.003 R1 0.070 0.003 h 0.300 0.500 0.012 0.020 θ 0° 8° 0° 8° 15 www.corebai.com CBM8551-CBM8552-CBM8554 OPERATION INSTRUCTION PACKAGE/ORDERING INFORMATION PRODUCT ORDERING PAKEAGE TRANSPOT MARKING MEDIA,QUANTILY SOT23-5 8551 Tape and Reel,3000 -40℃~125℃ SOIC-8(SOP8) CBM8551 Tape and Reel,2500 CBM8552AS8 -40℃~125℃ SOIC-8(SOP8) CBM8552 Tape and Reel,2500 CBM8552AMS8 -40℃~125℃ MSOP-8 CBM8552 Tape and Reel,3000 CBM8554ATS14 -40℃~125℃ TSSOP-14 CBM8554 Tape and Reel,2500 CBM8554AS14 -40℃~125℃ SOIC-14(SOP14) CBM8554 Tape and Reel,2500 TEMPRANGE PACKAGE CBM8551AST5 -40℃~125℃ CBM8551AS8 NUMBER CBM8551 CBM8552 CBM8554 16 www.corebai.com