SGM8521XN5/TR

Preliminary Datasheet SGM8521 SGM8522 SGM8524 PRODUCT DESCRIPTION The SGM8521 (single)，SGM8522 (dual) and SGM8524 (quad) are rail-to-rail input and output voltage feedback amplifiers offering low cost. They have a wide input common-mode voltage range and output voltage swing, and take the minimum operating supply voltage down to 2.1V and the maximum recommended supply voltage is 5.5 V. All are specified over the extended –40°C to +125°C temperature range. The SGM8521/8522/8524 provide150KHz bandwidth at a low current consumption of 4.7µA per amplifier. Very low input bias currents of 0.5pA, enable the SGM8521/8522/8524 to be used for integrators, photodiode amplifiers, and piezoelectric sensors. Rail-to-Rail inputs and outputs are useful to designers buffering ASIC in single-supply systems. Applications for these amplifiers include safety monitoring, portable equipment, battery and power supply control, and signal conditioning and interfacing for transducers in very low power systems. 150KHz, 4.7µA, Rail-to-Rail I/O CMOS Operational Amplifier FEATURES • Low Cost • Rail-to-Rail Input and Output 0.8mV Typical VOS • Unity Gain Stable • Gain Bandwidth Product: 150KHz • Very low input bias currents : 0.5pA • Operates on 2.1 V to 5.5 V Supplies • Input Voltage Range = - 0.1 V to +5.6 V with VS = 5.5V • Low Supply Current: 4.7µA/Amplifier • Small Packaging SGM8521 Available in SO-8 and SOT23-5 SGM8522 Available in SO-8 and MSOP-8 SGM8524 Available in SO-16, SO-14 and TSSOP-16 PIN CONFIGURATIONS (Top View) SGM8521 The SGM8521 is available in the tiny SOT23-5 and SO-8 packages. The SGM8522 comes in the miniature SO-8 and MSOP-8 packages. The SGM8524 is offered in TSSOP-16 SO-16 and SO-14 packages. ASIC Input or Output Amplifier Sensor Interface Piezo Electric Transducer Amplifier Medical Instrumentation Mobile Communication Audio Output Portable Systems Smoke Detectors Mobile Telephone Notebook PC PCMCIA cards Battery-Powered equipment Shengbang Microelectronics Co, Ltd Tel: 86/451/84348461 www.sg-micro.com 1 -VS 2 +IN 3 5 +VS 4 -IN SOT23-5 SGM8522 SGM8521 NC APPLICATIONS OUT -IN 8 1 7 2 +IN 3 -VS 4 NC = NO CONNECT NC OUT A 1 8 -INA 2 7 OUT B +INA 3 6 -INB -VS 4 5 +INB +VS 6 OUT 5 NC SO-8 / MSOP-8 SO-8 SGM8524 SGM8524 OUT A -IN A 14 OUT D 1 13 2 3 12 +IND +VS 4 11 -VS -IN B OUT B 10 +INC 5 9 6 7 8 SO-14 -INC OUT C 16 OUT D OUT A 1 -IN A 2 15 +IN A 3 14 +IND -IND +IN A +INB +VS -IND +VS 4 13 -VS +INB 5 12 +INC -IN B 6 11 -INC OUT B 7 10 OUT C NC 8 NC = NO CONNECT 9 NC SO-16/TSSOP-16 REV. B ELECTRICAL CHARACTERISTICS : VS = +5V (At RL = 500kΩ connected to Vs/2 and VOUT = Vs/2, unless otherwise noted) SGM8521/8522/8524 PARAMETER Symbol CONDITION TYP MIN/MAX OVER TEMPERATURE +25℃ +25 ℃ VOS ±0.8 ±3.5 Input Bias Current IB Input Offset Current IOS 0℃ to 70℃ - 40℃ to - 40℃ to +85℃ +125℃ UNITS MIN/ MAX INPUT CHARACTERISTICS Input Offset Voltage mV MAX 0.5 pA TYP 0.5 pA TYP Common-Mode Voltage Range VCM VS = 5.5V V TYP Common-Mode Rejection Ratio CMRR VS = 5.5V, VCM = -0.1V to 4 V 91 72 dB MIN VS = 5.5V, VCM = -0.1V to 5.6 V 83 63 dB MIN RL = 100KΩ ,Vo = 0.1V to 4.9V 100 84 dB MIN RL =500KΩ ,Vo = 0.015V to 4.965V 104 90 dB MIN µV/℃ TYP 0.005 V MAX 22 mA MIN mA TYP Open-Loop Voltage Gain Input Offset Voltage Drift AOL -0.1 to +5.6 1.7 ∆VOS/∆T OUTPUT CHARACTERISTICS Output Voltage Swing from Rail RL = 500KΩ Output Current IOUT Short-Circuit Current ISC POWER SUPPLY Operating Voltage Range Power Supply Rejection Ratio Quiescent Current / Amplifier PSRR IQ DYNAMIC PERFORMANCE 2.1 V MIN 5.5 V MAX Vs = +2.5 V to + 5.5 V VCM = (-VS) + 0.5 91 dB MIN IOUT = 0 4.7 µA MAX CL = 100pF Gain-Bandwidth Product GBP 150 KHz TYP Slew Rate SR G = +1 , 2V Output Step 0.04 V/µs TYP Settling Time to 0.1% tS G = +1, 2 V Output Step 32 µs TYP µs TYP VIN ·Gain = Vs Overload Recovery Time NOISE PERFORMANCE Voltage Noise Density en f = 1kHz f = 10kHz 40 nV/ Hz TYP 12 nV/ Hz TYP Specifications subject to change without notice. ２ SGM8521/8522/8524 PACKAGE/ORDERING INFORMATION MODEL SGM8521 SGM8522 SGM8524 ORDER NUMBER PACKAGE DESCRIPTION SGM8521XN5/TR SOT23-5 Tape and Reel, 3000 8521 SGM8521XS/TR SO-8 Tape and Reel, 2500 SGM8521XS SGM8522XS/TR SO-8 Tape and Reel, 2500 SGM8522XS SGM8522XMS/TR MSOP-8 Tape and Reel, 3000 SGM8522XMS SGM8524XS/TR SO-16 Tape and Reel, 2500 SGM8524XS SGM8524XS14 SO-14 Tube SGM8524XS14 SGM8524XTS/TR TSSOP-16 Tape and Reel, 3000 SGM8524XTS ABSOLUTE MAXIMUM RATINGS PACKAGE OPTION MARKING INFORMATION CAUTION Supply Voltage, V+ to V- . . . . . . . . . . . . . . . . . . . . . 7.5 V Common-Mode Input Voltage . . . . . . . . . . . . . . . . . . . . (–VS) – 0.5 V to (+VS )+0.5V Storage Temperature Range . . . . . . . . .–65℃ to +150℃ Junction Temperature . . . . . . . . . . . . . . . .. . . . . . . .160℃ Operating Temperature Range . . . . . . –55℃ to +150℃ This integrated circuit can be damaged by ESD. Shengbang Micro-electronics recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. Package Thermal Resistance @ TA = 25℃ SOT23-5, θJA.............................................................. 190℃/W SO-8, θJA......................................................................125℃/W MSOP-8, θJA.............................................................. 216℃/W SO-16, θJA..................................................................... 82℃/W TSSOP-16, θJA............................................................ 105℃/W Lead Temperature Range (Soldering 10 sec) .....................................................260℃ ESD Susceptibility HBM................................................................................4000V MM....................................................................................400V NOTES 1. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ３ SGM8521/8522/8524 TYPICAL PERFORMANCE CHARACTERISTICS At TA= +25℃, VS = +5V, and RL=500kΩ connected to Vs/2,unless otherwise noted. Small-Signal Step Response Small-Signal Step Response G = +1 RL = 500KΩ CL = 100pF 50mV/div 50mV/div G = +1 RL = 500KΩ CL = 20pF 50µs/div 50µs/div Small-Signal Overshoot vs.Load Capacitance Large-Signal Step Response 50 1V/div Small-Signal Overshoot(%) G = +1 CL = 100pF RL = 500KΩ G=-1 RFB=560KΩ 40 30 20 10 G=+1 RL=500KΩ 0 10 100µs/div Quiescent Current(μA) Output Voltage(Vp-p) 5 VS = 5V Maximum Output Voltage Without Slew-Rate Induced Distortion 3 20 6 2 VS = 2.5V 1 17.5 5.5 ISC 5 15 12.5 4.5 4 10 IQ 7.5 3.5 0 5 3 1 10 Frequency(kHz) 100 2 ４ Short-Circuit Current(mA) VS = 5.5V 4 1000 Quiescent And Short-Circuit Current vs.Supply Voltage Maximum Output Voltage vs. Frequency 6 100 Load Capacitance(pF) 2.5 3 3.5 4 4.5 Supply Voltage(V) 5 5.5 SGM8521/8522/8524 TYPICAL PERFORMANCE CHARACTERISTICS At TA= +25℃, VS = +5V, and RL=500kΩ connected to Vs/2,unless otherwise noted. Input Voltage Noise Spectral Density vs.Frequency CMRR And PSRR vs.Frequency 1000 100 Voltage Noise(nV/ √Hz) 90 80 CMRR CMRR,PSRR(dB) 70 60 50 40 30 20 10 100 PSRR 0 0.01 0.1 1 10 Frequency(kHz) 100 10 0.01 1000 1 10 100 Frequency(kHz) Output Voltage Swing vs.Output Current Output Voltage Swing vs.Output Current 3 5 135℃ 135℃ Sourcing Current -50℃ 2 VS = 3V 1 -50℃ 25℃ 135℃ Sinking Current -50℃ Sourcing Current 3 2 Sinking Current -50℃ 1 25℃ 135℃ 0 VS = 5V 25℃ 4 25℃ Output Voltage(V) Output Voltage(V) 0.1 0 0 4 8 12 16 20 0 Output Current(mA) 5 10 15 20 25 30 Output Current(mA) Supply Current vs.Temperature Supply Current( µA) 7 6 VS=5V 5 4 3 2 -45 -25 -5 15 35 55 75 95 115 135 Temperature(℃) ５ SGM8521/8522/8524 Power-Supply Bypassing and Layout APPLICATION NOTES The SGM852X family operates from either a single +2.5V to +5.5V supply or dual ±1.25V to ±2.75V supplies. For single-supply operation, bypass the power supply VDD with a 0.1µF ceramic capacitor which should be placed close to the VDD pin. For dual-supply operation, both the VDD and the VSS supplies should be bypassed to ground with separate 0.1µF ceramic capacitors. 2.2µF tantalum capacitor can be added for better performance. Driving Capacitive Loads The SGM852X can directly drive 250pF in unity-gain without oscillation. The unity-gain follower (buffer) is the most sensitive configuration to capacitive loading. Direct capacitive loading reduces the phase margin of amplifiers and this results in ringing or even oscillation. Applications that require greater capacitive drive capability should use an isolation resistor between the output and the capacitive load like the circuit in Figure 1. The isolation resistor RISO and the load capacitor CL form a zero to increase stability. The bigger the RISO resistor value, the more stable VOUT will be. Note that this method results in a loss of gain accuracy because RISO forms a voltage divider with the RLOAD. VDD VDD 10µF 10µF 0.1µF 0.1µF Vn RISO SGM8521 Vn VOUT VIN SGM8521 CL VOUT Vp 10µF Vp 0.1µF VSS(GND) Figure 1. Indirectly Driving Heavy Capacitive Load An improvement circuit is shown in Figure 2, It provides DC accuracy as well as AC stability. RF provides the DC accuracy by connecting the inverting signal with the output, 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 phase margin in the overall feedback loop. VOUT SGM8521 VSS Figure 3. Amplifier with Bypass Capacitors CF RF RISO SGM8521 VIN VOUT CL RL Figure 2. Indirectly Driving Heavy Capacitive Load with DC Accuracy For no-buffer configuration, there are two others ways to increase the phase margin: (a) by increasing the amplifier’s gain or (b) by placing a capacitor in parallel with the feedback resistor to counteract the parasitic capacitance associated with inverting node. ６ SGM8521/8522/8524 Typical Application Circuits Differential Amplifier C The circuit shown in Figure 4 performs the difference function. If the resistors ratios are equal ( R4 / R3 = R2 / R1 ), then VOUT = ( Vp – Vn ) × R2 / R1 + Vref. R2 R1 VIN R2 Vn SGM8521 VOUT R1 SGM8521 VOUT R3 = R1 // R2 Vp R3 R4 Figure 6. Low Pass Active Filter Vref Figure 4. Differential Amplifier Instrumentation Amplifier The circuit in Figure 5 performs the same function as that in Figure 4 but with the high input impedance. R2 R1 SGM8521 Vn VOUT SGM8521 Vp SGM8521 R3 R4 Vref Figure 5. Instrumentation Amplifier Low Pass Active Filter The low pass filter shown in Figure 6 has a DC gain of ( - R2 / R1 ) and the –3dB corner frequency is 1/2πR2C. Make sure the filter is within the bandwidth of the amplifier. The Large values of feedback resistors can couple with parasitic capacitance and cause undesired effects such as ringing or oscillation in high-speed amplifiers. Keep resistors value as low as possible and consistent with output loading consideration. ７ SGM8521/8522/8524 PACKAGE OUTLINE DIMENSIONS SOT23-5 D θ b 0.20 Symbol L E E1 e C A1 e1 Min Max Min Max 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 0.400 0.012 0.016 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 e1 L A A2 Dimensions In Inches 1.050 e ８ Dimensions In Millimeters A L 0 0.950TYP 1.800 2.000 0.700REF 0.037TYP 0.071 0.079 0.028REF L1 0.300 0.600 0.012 0.024 θ 0° 8° 0° 8° SGM8521/8522/8524 PACKAGE OUTLINE DIMENSIONS SO-8 D C E E1 L Symbol θ e Min Max Min Max 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 0.190 0.250 0.007 0.010 D 4.780 5.000 0.188 0.197 E 3.800 4.000 0.150 0.157 E1 5.800 6.300 0.228 0.248 A1 1.270TYP 0.050TYP L 0.400 1.270 0.016 0.050 θ 0° 8° 0° 8° A A2 Dimensions In Inches A e B Dimensions In Millimeters ９ SGM8521/8522/8524 PACKAGE OUTLINE DIMENSIONS MSOP-8 C E θ e A2 A A1 E1 L b Symbol Dimensions In Millimeters Min Max Dimensions In Inches Min Max A A1 A2 b c D e E E1 L θ 0.800 1.200 0.000 0.200 0.760 0.970 0.30 TYP 0.15 TYP 2.900 3.100 0.65 TYP 2.900 3.100 4.700 5.100 0.410 0.650 0° 6° 0.031 0.047 0.000 0.008 0.030 0.038 0.012 TYP 0.006 TYP 0.114 0.122 0.026 TYP 0.114 0.122 0.185 0.201 0.016 0.026 0° 6° D １０ SGM8521/8522/8524 PACKAGE OUTLINE DIMENSIONS SO-16 D L C E A A1 A2 b c D E E1 e L θ θ A1 A e A2 E1 Symbol Dimensions In Millimeters Min Max Dimensions In Inches Min Max 1.350 1.750 0.100 0.250 1.350 1.550 0.330 0.510 0.170 0.250 9.800 10.20 3.800 4.000 5.800 6.200 1.270 (BSC) 0.400 1.270 0° 8° 0.053 0.069 0.004 0.010 0.053 0.061 0.013 0.020 0.007 0.010 0.386 0.402 0.150 0.157 0.228 0.244 0.050 (BSC) 0.016 0.050 0° 8° b １１ SGM8521/8522/8524 PACKAGE OUTLINE DIMENSIONS TSSOP-16 A b E E1 Symbol PIN #1 IDENT. A2 A e C L θ D A D E b c E1 A A2 A1 e L H θ Dimensions In Millimeters Min Max 4.900 4.300 0.190 0.090 6.250 5.100 4.500 0.300 0.200 6.550 1.100 0.800 1.000 0.020 0.150 0.65 (BSC) 0.500 0.700 0.25(TYP) 1° 7° Dimensions In Inches Min Max 0.193 0.169 0.007 0.004 0.246 0.201 0.177 0.012 0.008 0.258 0.043 0.031 0.039 0.001 0.006 0.026 (BSC) 0.020 0.028 0.01(TYP) 1° 7° H A1 １２ SGM8521/8522/8524 PACKAGE OUTLINE DIMENSIONS SO-14 D L2 L θ1 E E1 θ2 INDEX Φ0.8±0.1 DEP0.2±0.1 h Φ2.0±0.1 BTM E-MARK DEP0.1±0.05 θ h e b 0.25 B B M A3 A1 A2 0.10 θ4 b c BASE METAL b1 WITH PLATING c1 A θ3 L1 R R1 Symbol A A1 A2 A3 b b1 c c1 D E E1 e L L1 L2 R R1 h θ θ1 θ2 θ3 θ4 Dimensions In Millimeters MIN NOM MAX 1.35 0.10 1.25 0.55 0.36 0.35 0.16 0.15 8.53 5.80 3.80 0.45 0.07 0.07 0.30 0° 6° 6° 5° 5° 1.60 0.15 1.45 0.65 0.40 1.75 0.25 1.65 0.75 0.49 0.45 0.25 0.25 8.73 6.20 4.00 0.20 8.63 6.00 3.90 1.27 BSC 0.60 0.80 1.04 REF 0.25 BSC 0.40 8° 8° 7° 7° 0.50 8° 10° 10° 9° 9° SECTION B-B １３ SGM8521/8522/8524 REVISION HISTORY Location Page 11/06— Data Sheet changed from Preliminary to REV. A Changes to ABSOLUTE MAXIMUM ATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 11/06— Data Sheet changed from REV. A to REV. B Adds SO-14 Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1, 3 Shengbang Microelectronics Co, Ltd Unit 3, ChuangYe Plaza No.5, TaiHu Northern Street, YingBin Road Centralized Industrial Park Harbin Development Zone Harbin, HeiLongJiang 150078 P.R. China Tel.: 86-451-84348461 Fax: 86-451-84308461 www.sg-micro.com １４ SGM8521/8522/8524