UNISONIC TECHNOLOGIES CO., LTD LLV321 LINEAR INTEGRATED CIRCUIT GENERAL PURPOSE, LOW VOLTAGE,RAIL-TO-RAIL OUTPUT AMPLIFIERS DESCRIPTION The LLV321 is a single, low cost and voltage feedback amplifier, that consumes only 80μA supply current, 1.2MHz of bandwidth and 1.5V/μs of slew rate at a low supply voltage of 2.7V. It is supplied from 2.7V (±1.35V) to 5.5V (±2.75V). The common mode voltage range extends below the negative rail and the output provides rail-to-rail performance. The LLV321 is fabricated on a CMOS process. The combination of low power, rail-to-rail performance, low voltage operation, and tiny package options makes the device well suited for use in personal electronics equipment such as cellular handsets, pagers, PDAs, and other battery powered applications. The LLV321 is also applied in portable test instruments, telephone systems, low cost general purpose applications, cellular phones, MP3 players, personal data assistants, A/D buffer, DSP interface, audio applications, smart card readers, keyless entry, Infrared receivers for remote controls, digital still cameras and hard disk drives. FEATURES (at 2.7V) * Input Voltage Varies From -0.25V to +1.5V * Supply Current: 80µA * Output Voltage Varies from 0.01V to 2.69V * Gain Bandwidth: 1.2MHz * Slew Rate: 1.5V/µs * Fully Specified at +2.7V and +5V Supplies * Operating Temperature Range: -40°C ~ +125°C * Halogen Free ORDERING INFORMATION Ordering Number LLV321G-AL5-R LLV321G-AL5-R Package SOT-353 Packing Tape Reel (1)Packing Type (1) R: Tape Reel (2)Package Type (2) AL5: SOT-353 (3)Halogen Free (3) G: Halogen Free MARKING www.unisonic.com.tw Copyright © 2010 Unisonic Technologies Co., Ltd 1 of 6 QW-R105-041.A LLV321 PIN CONFIGURATION +IN 1 -VS 2 -IN 3 5 +VS 4 OUT + - PIN DESCRIPTION PIN NO. 1 2 3 4 5 LINEAR INTEGRATED CIRCUIT PIN NAME +IN -VS -IN OUT +VS DESCRIPTION Positive Input Negative Supply Voltage Negative Input Output Positive Supply Voltage LOGIC SYMBOL UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R105-041.A LLV321 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Input Voltage VI -VS-0.5~+VS+0.5 V Supply Voltages Vs 0~+6 V Maximum Junction Temperature TJ +175 °C Storage Temperature Range TSTG -65~+150 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. RECOMMENDED OPERATING CONDITIONS PARAMETER Power Supply Operating Ambient Operating Temperature SYMBOL VS TOPR RATINGS 2.5~5.5 -40~+125 UNIT V °C ELECTRICAL CHARACTERISTICS (TC= 25°C, VS = +2.7V, G = 2, RL = 10kΩ to VS/2, RF = 10kΩ, VO(DC) = VCC/2; unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT AC Performance Gain Bandwidth Product GBWP CL = 50pF, RL =2kΩ to VS/2 1.2 MHz Phase Margin Φm 52 deg Gain Margin Gm 17 dB Slew Rate SR VO= 1VPP 1.5 V/µs Input Voltage Noise en >50kHz 36 nV/√Hz DC Performance Input Offset Voltage (Note 1) VOS 1.7 7 mV Average Drift TCVOS 8 µV/°C Input Bias Current (Note 2) IB <1 nA Input Offset Current (Note 2) IOS <1 nA Power Supply Rejection Ratio (Note 1) PSRR DC 50 65 dB Supply Current IS 80 120 µA Input Characteristics Input Common Mode Voltage Range VCML Low 0 -0.25 V (Note 1) High 1.5 1.3 V VCMH Common Mode Rejection Ratio (Note 1) CMRR 50 70 dB Output Characteristics VOL RL = 10kΩ to VS/2; Low 0.1 0.01 V Output Voltage Swing (Note 1) VOH RL = 10kΩ to VS/2; High 2.69 2.6 V Note: 1. Guaranteed by testing or statistical analysis at +25°C. 2. +IN and -IN are gates to CMOS transistors with typical input bias current of <1nA. CMOS leakage is too small to practically measure. 3. Min/Max ratings are based on product characterization and simulation. Individual parameters are tested as noted. Outgoing quality levels are determined from tested parameters. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 6 QW-R105-041.A LLV321 LINEAR INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS (Cont.) (TC= 25°C, VS = +5V, G = 2, RL = 10kΩ to VS/2, RF = 10kΩ, VO(DC) = VCC/2; unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT AC Performance Gain Bandwidth Product GBWP CL = 50pF, RL =2kΩ to VS/2 1.4 MHz Phase Margin Φm 73 deg Gain Margin Gm 12 dB Slew Rate SR 1.5 V/µs Input Voltage Noise en >50kHz 33 nV/√Hz DC Performance Input Offset Voltage (Note 1) VOS 1 7 mV Average Drift TCVOS 6 µV/°C Input Bias Current (Note 2) IB <1 nA Input Offset Current (Note 2) IOS <1 nA Power Supply Rejection Ratio (Note 1) PSRR DC 50 65 dB Open Loop Gain (Note 1) Av 50 70 dB Supply Current IS 100 150 µA Input Characteristics Input Common Mode Voltage Range VCML Low 0 -0.4 V (Note 1) High 3.8 3.6 V VCMH Common Mode Rejection Ratio (Note 1) CMRR 50 75 dB Output Characteristics VO RL = 2kΩ to VS/2; Low/High V 0.036~4.95 RL = 10kΩ to VS/2; Low 0.1 0.013 V VOL Output Voltage Swing (Note 1) RL = 10kΩ to VS/2; High 4.98 4.9 V VOH (Note 1) Io Sourcing; VO=0V 5 +34 mA Short Circuit Output Current (Note 1) Sinking; VO=5V 10 -23 mA Io Note: 1. Guaranteed by testing or statistical analysis at +25°C. 2. +IN and -IN are gates to CMOS transistors with typical input bias current of <1nA. CMOS leakage is too small to practically measure. 3. Min/max ratings are based on product characterization and simulation. Individual parameters are tested as noted. Outgoing quality levels are determined from tested parameters. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 6 QW-R105-041.A LLV321 LINEAR INTEGRATED CIRCUIT APPLICATION INFORMATION General Description The UTC LLV321 is a low cost, single supply, low voltage and voltage feedback amplifier which is characterized a rail- to- rail output. It is designed to operate on a CMOS process, and is unity gain stable. Figure 1 shows the typical non-inverting circuit schematic +VS 6.8µF + 0.01µF + +IN UTC LLV321 - OUT Rf Rg Figure 1. Typical Non-Inverting Configuration Power Dissipation For the UTC LLV321, the maximum internal power dissipation is directly depending on the maximum junction temperature. If the maximum junction temperature is higher than 150°C, some performances are declined. If the maximum junction temperature becomes higher than 175°C for an extended time, device failure may be cause. Driving Capacitive Loads In figure 2, a small series resistance (RS) at the output of the amplifier, will improve stability and settling performance. Driving a capacitive load introduces phase-lag into the output signal, which reduces phase margin in the amplifier. The unity gain follower is the most sensitive configuration. In a unity gain follower configuration, the UTC LLV321 requires a 450Ω series resistor to drive a 200pF load. The response is as seen in TYPICAL CHARACTERISTIC. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 6 QW-R105-041.A LLV321 TYPICAL CHARACTERISTIC Small Signal Pulse Response 300 200 100 0 300 200 100 0 VOUT1 0 Magnitude (dB) LINEAR INTEGRATED CIRCUIT 12.5 Time (µs) 25 Frequency Response vs. CL for Unity Gain Configuration 3 2 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 0.01 CL=50pF RS=0 CL=100pF RS=400Ω CL=200pF RS=450Ω 0.1 1 Frequency (MHz) 10 UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 6 QW-R105-041.A