LTC2051/LTC2052 Dual/Quad Zero-Drift Operational Amplifiers U FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ DESCRIPTIO Maximum Offset Voltage of 3μV Maximum Offset Voltage Drift of 30nV/°C Small Footprint, Low Profile MS8/GN16 Packages Single Supply Operation: 2.7V to ±5.5V Noise: 1.5μVP-P (0.01Hz to 10Hz Typ) Voltage Gain: 140dB (Typ) PSRR: 130dB (Typ) CMRR: 130dB (Typ) Supply Current: 0.75mA (Typ) per Amplifier Extended Common Mode Input Range Output Swings Rail-to-Rail Operating Temperature Range – 40°C to 125°C Available in 3mm × 3mm × 0.8mm DFN Package U APPLICATIO S ■ ■ ■ ■ ■ ■ The LTC2051/LTC2052, despite their miniature size, feature uncompromising DC performance. The typical input offset voltage and offset drift are 0.5μV and 10nV/°C. The almost zero DC offset and drift are supported with a power supply rejection ratio (PSRR) and common mode rejection ratio (CMRR) of more than 130dB. The input common mode voltage ranges from the negative supply up to typically 1V from the positive supply. The LTC2051/LTC2052 also have an enhanced output stage capable of driving loads as low as 2kΩ to both supply rails. The open-loop gain is typically 140dB. The LTC2051/ LTC2052 also feature a 1.5μVP-P DC to 10Hz noise and a 3MHz gain-bandwidth product. Thermocouple Amplifiers Electronic Scales Medical Instrumentation Strain Gauge Amplifiers High Resolution Data Acquisition DC Accurate RC Active Filters Low Side Current Sense , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. U ■ The LTC®2051/LTC2052 are dual/quad zero-drift operational amplifiers available in the MS8 and SO-8/GN16 and S14 packages. For space limited applications, the LTC2051 is available in a 3mm × 3mm × 0.8mm dual fine pitch leadless package (DFN). They operate from a single 2.7V supply and support ±5V applications. The current consumption is 750μA per op amp. TYPICAL APPLICATIO High Performance Low Cost Instrumentation Amplifier Input Referred Noise 0.1Hz to 10Hz 2 R2 10k 0.1% R1 100Ω 0.1% 5V 2 – 8 1/2 LTC2051HV –VIN 1 3 1 R1 100Ω 0.1% μV R2 10k 0.1% 6 – 1/2 LTC2051HV + VIN 5 0 + 4 –5V 7 –1 AV = 101 20512 TA01 –2 0 2 4 6 TIME (SEC) 8 10 2052 TA02 20512fd 1 LTC2051/LTC2052 W W W AXI U U ABSOLUTE RATI GS (Note 1) Total Supply Voltage (V + to V –) LTC2051/LTC2052 .................................................. 7V LTC2051HV/LTC2052HV ....................................... 12V Input Voltage (Note 5) .......... (V + + 0.3V) to (V – – 0.3V) Output Short-Circuit Duration ......................... Indefinite Operating Temperature Range ............. – 40°C to 125°C Specified Temperature Range (Note 3) – 40°C to 125°C Storage Temperature Range ................ – 65°C to 150°C DD Package ...................................... – 65°C to 125°C Lead Temperature (Soldering, 10 sec)................. 300°C U U W PACKAGE/ORDER I FOR ATIO TOP VIEW OUT A 1 8 –IN A 2 9 +IN A 3 V– 4 TOP VIEW V+ 7 OUT B 6 –IN B 5 +IN B OUT A –IN A +IN A V– 1 2 3 4 TOP VIEW 8 7 6 5 OUT A –IN A +IN A V– SHDN A V+ OUT B –IN B +IN B MS8 PACKAGE 8-LEAD PLASTIC MSOP DD PACKAGE 8-LEAD (3mm × 3mm) PLASTIC DFN V+ OUT B –IN B +IN B SHDN B MS10 PACKAGE 10-LEAD PLASTIC MSOP TJMAX = 125°C, θJA = 250°C/W TJMAX = 125°C, θJA = 160°C/W 10 9 8 7 6 1 2 3 4 5 TJMAX = 125°C, θJA = 250°C/W EXPOSED PAD (PIN 9) IS CONNECTED TO V– (PIN 4) ORDER PART NUMBER* DD PART MARKING ORDER PART NUMBER MS8 PART MARKING ORDER PART NUMBER MS10 PART MARKING LTC2051CDD LTC2051IDD LTC2051HVCDD LTC2051HVIDD LAAN LTC2051CMS8 LTC2051IMS8 LTC2051HVCMS8 LTC2051HVIMS8 LTC2051HMS8 LTC2051HVHMS8 LTMN LTMP LTPJ LTPK LTVF LTVH LTC2051CMS10 LTC2051IMS10 LTC2051HVCMS10 LTC2051HVIMS10 LTMQ LTMR LTRB LTRC LAEL TOP VIEW OUT A 1 8 V+ –IN A 2 7 OUT B +IN A 3 6 –IN B V– 4 5 +IN B S8 PACKAGE 8-LEAD PLASTIC SO TJMAX = 125°C, θJA = 190°C/W ORDER PART NUMBER S8 PART MARKING LTC2051CS8 LTC2051IS8 LTC2051HVCS8 LTC2051HVIS8 LTC2051HS8 LTC2051HVHS8 2051 2051I 2051HV 051HVI 2051H 051HVH Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specified with wider operating temperature ranges. 20512fd 2 LTC2051/LTC2052 U U W PACKAGE/ORDER I FOR ATIO ORDER PART NUMBER TOP VIEW OUT A 1 16 OUT D –IN A 2 15 –IN D +IN A 3 14 +IN D V+ 4 13 V – +IN B 5 12 +IN C –IN B 6 11 –IN C OUT B NC 7 8 10 OUT C 9 LTC2052CGN LTC2052IGN LTC2052HVCGN LTC2052HVIGN LTC2052HGN LTC2052HVHGN GN PART MARKING NC ORDER PART NUMBER TOP VIEW OUT A 1 14 OUT D –IN A 2 13 –IN D +IN A 3 12 +IN D V+ 4 +IN B 5 10 +IN C –IN B 6 9 –IN C OUT B 7 8 OUT C 2052 2052I 2052HV 052HVI 2052H 052HVH GN PACKAGE 16-LEAD PLASTIC SSOP TJMAX = 125°C, θJA = 110°C/W 11 V – LTC2052CS LTC2052IS LTC2052HVCS LTC2052HVIS LTC2052HS LTC2052HVHS S PACKAGE 14-LEAD PLASTIC SO TJMAX = 125°C, θJA = 110°C/W U AVAILABLE OPTIO S PART NUMBER LTC2051CDD LTC2051CS8 LTC2051CMS8 LTC2051CMS10 LTC2051HVCDD LTC2051HVCS8 LTC2051HVCMS8 LTC2051HVCMS10 LTC2051IDD LTC2051IS8 LTC2051IMS8 LTC2051IMS10 LTC2051HVIDD LTC2051HVIS8 LTC2051HVIMS8 LTC2051HVIMS10 LTC2051HS8 LTC2051HMS8 LTC2051HVHS8 LTC2051HVHMS8 LTC2052CS LTC2052CGN LTC2052HVCS LTC2052HVCGN AMPS/PACKAGE 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 4 4 4 4 SPECIFIED TEMP RANGE 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C –40°C to 85°C –40°C to 85°C –40°C to 85°C –40°C to 85°C –40°C to 85°C –40°C to 85°C –40°C to 85°C –40°C to 85°C –40°C to 125°C –40°C to 125°C –40°C to 125°C –40°C to 125°C 0°C to 70°C 0°C to 70°C 0°C to 70°C 0°C to 70°C SPECIFIED VOLTAGE 3V, 5V 3V, 5V 3V, 5V 3V, 5V 3V, 5V, ±5V 3V, 5V, ±5V 3V, 5V, ±5V 3V, 5V, ±5V 3V, 5V 3V, 5V 3V, 5V 3V, 5V 3V, 5V, ±5V 3V, 5V, ±5V 3V, 5V, ±5V 3V, 5V, ±5V 3V, 5V 3V, 5V 3V, 5V, ±5V 3V, 5V, ±5V 3V, 5V 3V, 5V 3V, 5V, ±5V 3V, 5V, ±5V PACKAGE DD SO-8 8-Lead MSOP 10-Lead MSOP DD SO-8 8-Lead MSOP 10-Lead MSOP DD SO-8 8-Lead MSOP 10-Lead MSOP DD SO-8 8-Lead MSOP 10-Lead MSOP SO-8 8-Lead MSOP SO-8 8-Lead MSOP 14-Lead SO 16-Lead SSOP 14-Lead SO 16-Lead SSOP 20512fd 3 LTC2051/LTC2052 U AVAILABLE OPTIO S PART NUMBER LTC2052IS LTC2052IGN LTC2052HVIS LTC2052HVIGN LTC2052HS LTC2052HGN LTC2052HVHS LTC2052HVHGN AMPS/PACKAGE 4 4 4 4 4 4 4 4 SPECIFIED TEMP RANGE –40°C to 85°C –40°C to 85°C –40°C to 85°C –40°C to 85°C –40°C to 125°C –40°C to 125°C –40°C to 125°C –40°C to 125°C SPECIFIED VOLTAGE 3V, 5V 3V, 5V 3V, 5V, ±5V 3V, 5V, ±5V 3V, 5V 3V, 5V 3V, 5V, ±5V 3V, 5V, ±5V PACKAGE 14-Lead SO 16-Lead SSOP 14-Lead SO 16-Lead SSOP 14-Lead SO 16-Lead SSOP 14-Lead SO 16-Lead SSOP ELECTRICAL CHARACTERISTICS (LTC2051/LTC2052, LTC2051HV/LTC2052HV) The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = 3V, 5V unless otherwise noted. (Note 3) PARAMETER Input Offset Voltage Average Input Offset Drift Long-Term Offset Drift Input Bias Current (Note 4) Input Offset Current (Note 4) Input Noise Voltage Common Mode Rejection Ratio CONDITIONS (Note 2) (Note 2) VS = 3V VS = 3V VS = 5V VS = 5V VS = 3V VS = 3V VS = 5V VS = 5V RS = 100Ω, DC to 10Hz VCM = GND to V + – 1.3, VS = 3V VCM = GND to V + – 1.3, VS = 5V ● ● ● ● ● ● ● Power Supply Rejection Ratio ● Large-Signal Voltage Gain RL = 10k, VS = 3V RL = 10k, VS = 5V Output Voltage Swing High Output Voltage Swing Low Slew Rate Gain Bandwidth Product Supply Current (Per Amplifier) Supply Current, Shutdown ● ● RL = 2k to GND RL = 10k to GND RL = 2k to GND RL = 10k to GND ● ● No Load, VS = 3V, VSHDN = VIH No Load, VS = 5V, VSHDN = VIH VSHDN = VIL, VS = 3V VSHDN = VIL, VS = 5V ● ● ● ● ● ● LTC2051C/LTC2052C LTC2051I/LTC2052I MIN TYP MAX ±0.5 ±3 0.01 ±0.03 50 ±8 ±50 ±100 ±25 ±75 ±150 ±100 ±150 ±150 ±200 1.5 115 130 110 130 120 130 115 130 120 130 115 130 120 140 115 140 125 140 120 140 V+ – 0.15 V+ – 0.06 V+ – 0.05 V+ – 0.02 2 15 2 15 2 3 0.75 1.0 0.85 1.2 2 5 4 10 LTC2051H/LTC2052H MIN TYP MAX ±0.5 ±3 0.01 ±0.05 50 ±8 ±50 ±3000 ±25 ±75 ±3000 ±100 ±700 ±150 ±700 1.5 115 130 110 130 120 130 115 130 120 130 115 130 120 140 115 140 125 140 120 140 V+ – 0.15 V+ – 0.06 V+ – 0.05 V+ – 0.02 2 15 2 15 2 3 0.75 1.1 0.85 1.3 2 5 4 10 UNITS μV μV/°C nV/√mo pA pA pA pA pA pA pA pA μVP-P dB dB dB dB dB dB dB dB dB dB V V mV mV V/μs MHz mA mA μA μA 20512fd 4 LTC2051/LTC2052 ELECTRICAL CHARACTERISTICS (LTC2051/LTC2052, LTC2051HV/LTC2052HV) The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = 3V, 5V unless otherwise noted. (Note 3) PARAMETER Shutdown Pin Input Low Voltage (VIL) Shutdown Pin Input High Voltage (VIH) Shutdown Pin Input Current CONDITIONS ● ● VSHDN = VIL, VS = 3V VSHDN = VIL, VS = 5V ● ● Internal Sampling Frequency LTC2051C/LTC2052C LTC2051I/LTC2052I MIN TYP MAX V – + 0.5 V + – 0.5 –1 –3 –2 –5 7.5 LTC2051H/LTC2052H MIN TYP MAX V – + 0.5 V + – 0.5 –1 –3 –2 –5 7.5 UNITS V V μA μA kHz (LTC2051HV/LTC2052HV) The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = ±5V unless otherwise noted. (Note 3) PARAMETER Input Offset Voltage Average Input Offset Drift Long-Term Offset Drift Input Bias Current (Note 4) CONDITIONS (Note 2) (Note 2) ● ● Input Offset Current (Note 4) ● Input Noise Voltage Common Mode Rejection Ratio RS = 100Ω, DC to 10Hz VCM = V – to V + – 1.3 ● Power Supply Rejection Ratio ● Large-Signal Voltage Gain Maximum Output Voltage Swing Slew Rate Gain Bandwidth Product Supply Current (Per Amplifier) Supply Current, Shutdown Shutdown Pin Input Low Voltage (VIL) Shutdown Pin Input High Voltage (VIH) Shutdown Pin Input Current Internal Sampling Frequency RL = 10k ● RL = 2k to GND RL = 10k to GND ● ● No Load, VSHDN = VIH VSHDN = VIL ● ● ● ● VSHDN = VIL Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: These parameters are guaranteed by design. Thermocouple effects preclude measurements of these voltage levels during automated testing. Note 3: All versions of the LTC2051/LTC2052 are designed, characterized and expected to meet the extended temperature limits of –40°C and 125°C. The LTC2051C/LTC2052C/LTC2051HVC/LTC2052HVC are guaranteed to meet the temperature limits of 0°C and 70°C. The LTC2051I/LTC2052I/ LTC2051HVI/LTC2052HVI are guaranteed to meet temperature limits of – 40°C and 85°C. The LTC2051H/LTC2051HVH and LTC2052H/LTC2052HVH ● LTC2051C/LTC2052C LTC2051I/LTC2052I MIN TYP MAX ±1 ±3 0.01 ±0.03 50 ±90 ±150 ±300 ±300 ±500 1.5 125 130 120 130 120 130 115 130 125 140 120 140 ±4.75 ±4.92 ±4.90 ±4.98 2 3 1 1.5 15 30 V – + 0.5 V + – 0.5 –7 –15 7.5 LTC2051H/LTC2052H MIN TYP MAX UNITS ±1 ±3 μV 0.01 ±0.05 μV/°C 50 nV/√mo ±90 ±150 pA ±3000 pA ±300 pA ±700 pA 1.5 μVP-P 125 130 dB 120 130 dB 120 130 dB 115 130 dB 125 140 dB 120 140 dB ±4.50 ±4.92 V ±4.85 ±4.98 V 2 V/μs 3 MHz 1 1.5 mA 15 30 μA V – + 0.5 V V + – 0.5 V –7 – 15 μA 7.5 kHz are guaranteed to meet the temperature limits of – 40°C and 125°C. Note 4: The bias current measurement accuracy depends on the proximity of the negative supply bypass capacitors to the device under test. Because of this, only the bias current of channel B (LTC2051) and channels A and B (LTC2052) are 100% tested to the data sheet specifications. The bias currents of the remaining channels are 100% tested to relaxed limits, however, their values are guaranteed by design to meet the data sheet limits. Note 5: This parameter is guaranteed to meet specified performance through design and characterization. It has not been tested. Note 6: The θJA specified for the DD package is with minimal PCB heat spreading metal. Using expanded metal area on all layers of a board reduces this value. 20512fd 5 LTC2051/LTC2052 U W TYPICAL PERFOR A CE CHARACTERISTICS Common Mode Rejection Ratio vs Frequency 140 DC CMRR vs Common Mode Input Range VS = 3V OR ±5V VCM = 0.5VP-P 120 120 100 100 VS = 10V –PSRR 100 60 PSRR (dB) 80 80 VS = 5V VS = 3V CMRR (dB) CMRR (dB) PSRR vs Frequency 120 140 80 60 60 +PSRR 40 40 40 20 20 0 1 100 1k FREQUENCY (Hz) 10 0 0 100k 10k 20 0 2 4 6 4 VS = 3V 2 5 4 VS = 5V 4 3 VS = 3V 2 1 1 0 0 0.01 RL TO GND 3 OUTPUT VOLTAGE (V) 5 OUTPUT VOLTAGE (V) OUTPUT SWING (V) Output Swing vs Load Resistance ±5V 6 VS = 5V 1M 20512 G03 Output Swing vs Output Current RL TO GND 3 100k 20512 G02 Output Voltage Swing vs Load Resistance 5 1k 10k FREQUENCY (Hz) VCM (V) 20512 G01 6 100 10 10 8 2 1 0 –1 –2 –3 –4 0 2 10 8 4 6 LOAD RESISTANCE (kΩ) 0.1 1 OUTPUT CURRENT (mA) 20512 G04 6 8 4 LOAD RESISTANCE (kΩ) 10 Bias Current vs Temperature 10k 80 PHASE 80 100 1k 60 2 120 GAIN GAIN (dB) 1 0 –1 40 140 20 160 –2 0 –3 –4 –5 0.01 1 0.1 OUTPUT CURRENT (mA) 10 20512 G07 V = 3V OR ±5V –20 CS = 50pF L RL = 100k –40 1k 100 10k 100k FREQUENCY (Hz) BIAS CURRENT (pA) RL TO GND PHASE (DEG) OUTPUT SWING (V) 2 20512 G06 Gain/Phase vs Frequency 100 5 3 0 20512 G05 Output Swing vs Output Current, ±5V Supply 4 –5 10 100 VS = ±5V VS = 5V 10 VS = 3V 180 1M 200 10M 20512 G08 1 –50 50 0 TEMPERATURE (°C) 100 125 20512 G09 20512fd 6 LTC2051/LTC2052 U W TYPICAL PERFOR A CE CHARACTERISTICS Input Bias Current vs Input Common Mode Voltage Transient Response Input Overload Recovery INPUT (V) 150 OUTPUT (V) 2V/DIV 200 100 VS = ±5V 50 VS = 5V AV = 1 RL = 10k CL = 100pF VS = ±5V VS = 3V –3 1 3 –1 0 INPUT COMMON MODE VOLTAGE (V) 5 0 – 0.1 1.5 0 20512 G11 1μs/DIV AV = – 100 RL = 100k CL = 10pF VS = 3V 500μs/DIV 2050 G12 20512 G10 Sampling Frequency vs Supply Voltage Sampling Frequency vs Temperature 10 SAMPLING FREQUENCY (kHz) 10 9 8 7 6 5 3 5 7 9 9 8 VS = ±5V VS = 3V 7 6 5 –50 11 SUPPLY VOLTAGE (V) 50 0 TEMPERATURE (°C) 20512 G13 100 125 20512 G14 Supply Current (Per Amplifier) vs Supply Voltage Supply Current (Per Amplifier) vs Temperature 1.2 1.2 1.0 1.0 SUPPLY CURRENT (mA) –5 SAMPLING FREQUENCY (kHz) 0 SUPPLY CURRENT (mA) INPUT BIAS CURRENT (pA) 250 0.8 0.6 0.4 0.2 0.8 0.6 VS = ±5V VS = 5V VS = 3V 0.4 0.2 0 2.5 4.5 6.5 8.5 SUPPLY VOLTAGE (V) 10.5 20512 G15 0 –50 50 0 TEMPERATURE (°C) 100 125 20512 G16 20512fd 7 LTC2051/LTC2052 U W U U APPLICATIO S I FOR ATIO Shutdown The LTC2051 includes a shutdown pin in the 10-lead MSOP. When this active low pin is high or allowed to float, the device operates normally. When the shutdown pin is pulled low, the device enters shutdown mode; supply current drops to 3μA, all clocking stops and the output assumes a high impedance state. Clock Feedthrough, Input Bias Current The LTC2051/LTC2052 use autozeroing circuitry to achieve an almost zero DC offset over temperature, common mode voltage and power supply voltage. The frequency of the clock used for autozeroing is typically 7.5kHz. The term clock feedthrough is broadly used to indicate visibility of this clock frequency in the op amp output spectrum. There are typically two types of clock feedthrough in autozeroed op amps like the LTC2051/LTC2052. The first form of clock feedthough is caused by the settling of the internal sampling capacitor and is input referred; that is, it is multiplied by the closed-loop gain of the op amp. This form of clock feedthrough is independent of the magnitude of the input source resistance or the magnitude of the gain setting resistors. The LTC2051/LTC2052 have a residue clock feedthrough of less than 1μVRMS input referred at 7.5kHz. The second form of clock feedthrough is caused by the small amount of charge injection occurring during the sampling and holding of the op amps input offset voltage. The current spikes are multiplied by the impedance seen at the input terminals of the op amp, appearing at the output multiplied by the closed-loop gain of the op amp. To reduce this form of clock feedthrough, use smaller valued gain setting resistors and minimize the source resistance at the input. If the resistance seen at the inputs is less than 10k, this form of clock feedthrough is less than 1μVRMS input referred at 7.5kHz, or less than the amount of residue clock feedthrough from the first form previously described. Placing a capacitor across the feedback resistor reduces either form of clock feedthrough by limiting the bandwidth of the closed-loop gain. Input bias current is defined as the DC current into the input pins of the op amp. The same current spikes that cause the second form of clock feedthrough previously described, when averaged, dominate the DC input bias current of the op amp below 70°C. At temperatures above 70°C, the leakage of the ESD protection diodes on the inputs increase the input bias currents of both inputs in the positive direction, while the current caused by the charge injection stays relatively constant. At elevated temperatures (above 85°C) the leakage current begins to dominate and both the negative and positive pin’s input bias currents are in the positive direction (into the pins). Input Pins, ESD Sensitivity ESD voltages above 700V on the input pins of the op amp will cause the input bias currents to increase (more DC current into the pins). At these voltages, it is possible to damage the device to a point where the input bias current exceeds the maximums specified in this data sheet. U TYPICAL APPLICATIO The dual chopper op amp buffers the inputs of A1 and corrects its offset voltage and offset voltage drift. With the RC values shown, the power-up warm-up time is typically 20 seconds. The step response of the composite amplifier does not present settling tails. The LT®1677 should be used when extremely low noise, VOS and VOS drift are needed and the input source resistance is low. (For instance a 350Ω strain gauge bridge.) The LT1012 or equivalent should be used when low bias current (100pA) is also required in conjunction with DC to 10Hz low noise, low VOS and VOS drift. The measured typical input offset voltages are less than 1μV. 20512fd 8 LTC2051/LTC2052 U TYPICAL APPLICATIO Obtaining Ultralow VOS Drift and Low Noise + 5 2 – 1 1/2 LTC2051 3 + + 1/2 LTC2051 R4 6 5V 7 – C1 R5 20512 F01 C2 R1 OUT R2 R3 3 + 1 8 6 A1 2 – OUT – A1 R1 R2 R3 R4 R5 C1 C2 eIN (DC – 1Hz) eIN (DC – 10Hz) LT1677 2.49k 3.01k 340k 10k 100k 0.01μF 0.001μF 0.15μVP-P 0.2μVP-P LT1012 750Ω 57Ω 250k 10k 100k 0.01μF 0.001μF 0.3μVP-P 0.4μVP-P U PACKAGE DESCRIPTIO DD Package 8-Lead Plastic DFN (3mm × 3mm) (Reference LTC DWG # 05-08-1698) R = 0.115 TYP 5 0.38 ± 0.10 8 0.675 ±0.05 3.00 ±0.10 (4 SIDES) 3.5 ±0.05 1.65 ±0.05 2.15 ±0.05 (2 SIDES) 1.65 ± 0.10 (2 SIDES) PIN 1 TOP MARK (NOTE 6) 0.200 REF PACKAGE OUTLINE 0.75 ±0.05 0.00 – 0.05 4 0.25 ± 0.05 1 0.50 BSC 2.38 ±0.10 (2 SIDES) BOTTOM VIEW—EXPOSED PAD NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-1) 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON TOP AND BOTTOM OF PACKAGE 0.25 ± 0.05 0.50 BSC 2.38 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS (DD) DFN 1203 20512fd 9 LTC2051/LTC2052 U PACKAGE DESCRIPTIO MS8 Package 8-Lead Plastic MSOP (Reference LTC DWG # 05-08-1660) 0.254 (.010) DETAIL “A” 0° – 6° TYP GAUGE PLANE 0.53 ± 0.152 (.021 ± .006) 1.10 (.043) MAX DETAIL “A” 3.00 ± 0.102 (.118 ± .004) (NOTE 3) 0.86 (.034) REF 0.18 (.007) SEATING PLANE 8 7 6 5 0.127 ± 0.076 (.005 ± .003) 0.65 (.0256) NOTE: BSC 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX 0.889 ± 0.127 (.035 ± .005) 3.00 ± 0.102 (.118 ± .004) 5.23 (NOTE 4) (.206) MIN 4.90 ± 0.152 (.193 ± .006) 0.22 – 0.38 (.009 – .015) TYP 0.52 (.0205) REF 1 2 3 3.20 – 3.45 (.126 – .136) 4 0.65 (.0256) BSC 0.42 ± 0.038 (.0165 ± .0015) TYP RECOMMENDED SOLDER PAD LAYOUT MSOP (MS8) 0204 MS Package 10-Lead Plastic MSOP (Reference LTC DWG # 05-08-1661) 3.00 ± 0.102 (.118 ± .004) (NOTE 3) 10 9 8 7 6 0.254 (.010) 3.00 ± 0.102 (.118 ± .004) (NOTE 4) 4.90 ± 0.152 (.193 ± .006) DETAIL “A” 0.497 ± 0.076 (.0196 ± .003) REF 0.889 ± 0.127 (.035 ± .005) 5.23 (.206) MIN 0° – 6° TYP 3.20 – 3.45 (.126 – .136) GAUGE PLANE 1 2 3 4 5 0.53 ± 0.152 (.021 ± .006) DETAIL “A” 0.86 (.034) REF 1.10 (.043) MAX 0.50 0.305 ± 0.038 (.0197) (.0120 ± .0015) BSC TYP RECOMMENDED SOLDER PAD LAYOUT 0.18 (.007) MSOP (MS) 0603 SEATING PLANE 0.17 – 0.27 (.007 – .011) TYP 0.50 (.0197) BSC 0.127 ± 0.076 (.005 ± .003) NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX 20512fd 10 LTC2051/LTC2052 U PACKAGE DESCRIPTIO S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) .189 – .197 (4.801 – 5.004) NOTE 3 .010 – .020 × 45° (0.254 – 0.508) .008 – .010 (0.203 – 0.254) 7 8 .004 – .010 (0.101 – 0.254) .053 – .069 (1.346 – 1.752) .045 ±.005 5 6 .050 BSC 0°– 8° TYP .016 – .050 (0.406 – 1.270) .050 (1.270) BSC .014 – .019 (0.355 – 0.483) TYP NOTE: 1. DIMENSIONS IN INCHES (MILLIMETERS) 2. DRAWING NOT TO SCALE 3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) .150 – .157 (3.810 – 3.988) NOTE 3 .228 – .244 (5.791 – 6.197) .245 MIN .160 ±.005 SO8 0303 1 3 2 .030 ±.005 TYP 4 RECOMMENDED SOLDER PAD LAYOUT GN Package 16-Lead Plastic SSOP (Narrow .150 Inch) (Reference LTC DWG # 05-08-1641) .015 ± .004 × 45° (0.38 ± 0.10) .007 – .0098 (0.178 – 0.249) .0532 – .0688 (1.35 – 1.75) .004 – .0098 (0.102 – 0.249) .189 – .196* (4.801 – 4.978) .045 ±.005 0° – 8° TYP 16 15 14 13 12 11 10 9 .016 – .050 (0.406 – 1.270) .009 (0.229) REF .0250 (0.635) BSC .008 – .012 (0.203 – 0.305) TYP .254 MIN NOTE: 1. CONTROLLING DIMENSION: INCHES INCHES 2. DIMENSIONS ARE IN (MILLIMETERS) .229 – .244 (5.817 – 6.198) .0165 ± .0015 3. DRAWING NOT TO SCALE *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE .150 – .165 .150 – .157** (3.810 – 3.988) .0250 BSC RECOMMENDED SOLDER PAD LAYOUT 1 2 3 4 5 6 7 GN16 (SSOP) 0204 8 S Package 14-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) .337 – .344 (8.560 – 8.738) NOTE 3 .045 ±.005 .050 BSC 14 N 12 11 10 9 8 N .245 MIN .160 ±.005 .150 – .157 (3.810 – 3.988) NOTE 3 .228 – .244 (5.791 – 6.197) 1 .030 ±.005 TYP 13 2 3 N/2 N/2 RECOMMENDED SOLDER PAD LAYOUT 1 .010 – .020 × 45° (0.254 – 0.508) .008 – .010 (0.203 – 0.254) 2 3 4 5 6 7 .053 – .069 (1.346 – 1.752) .004 – .010 (0.101 – 0.254) 0° – 8° TYP .016 – .050 (0.406 – 1.270) NOTE: 1. DIMENSIONS IN .014 – .019 (0.355 – 0.483) TYP .050 (1.270) BSC INCHES (MILLIMETERS) 2. DRAWING NOT TO SCALE 3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) S14 0502 20512fd Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. 11 LTC2051/LTC2052 U TYPICAL APPLICATIO Paralleling Amplifiers to Improve Noise R2 R1 2 – 1/4 LTC2052 3 1 R + R 5V R2 R1 VIN 6 0.1μF – 1/4 LTC2052 5 7 R 13 + – 4 1/4 LTC2052 12 + 14 VOUT 11 R2 0.1μF R1 9 1/4 LTC2052 10 –5V – 8 R + VOUT R2 NOISE OF EACH PARALLEL OP AMP =3 ; INPUT DC – 10Hz NOISE ≅ 0.8μVP-P = R1 VIN √3 20512 F02 RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LTC1051/LTC1053 Precision Zero-Drift Op Amp Dual/Quad LTC1151 ±15V Zero-Drift Op Amp Dual High Voltage Operation ±18V LTC1152 Rail-to-Rail Input and Output Zero-Drift Op Amp Single Zero-Drift Op Amp with Rail-to-Rail Input and Output and Shutdown LTC2050 Zero-Drift Op Amp in SOT-23 Single Supply Operation 2.7V to ±5V, Shutdown LTC2053 Zero-Drift Precision Instrumentation Amp MS8, 116dB CMRR, Two External Resistors Set Gain LTC6800 Rail-to-Rail Input and Output Instrumentation Amp Low Cost, MS8, Two External Resistors Set Gain 20512fd 12 Linear Technology Corporation LT 0108 REV D • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com © LINEAR TECHNOLOGY CORPORATION 2000