VOL 2 Industrial Signal Chain High Performance Analog ICs Industrial systems demand semiconductors that are precise, flexible and reliable. Linear Technology offers a broad line of high performance analog ICs that simplify system design with rugged devices featuring parameters fully guaranteed over the -40°C to 85°C temperature range. We back this up with knowledgeable applications support, long product life cycles and superior on-time delivery. This brochure spotlights recently released signal path ICs from Linear Technology that are ideally suited for demanding industrial applications, including: • • • • • • • • ADCs DACs Amplifiers Comparators Filters Voltage References RMS-to-DC Converters Silicon Oscillators For the latest datasheets, application notes, software design tools and interactive selection tables, visit www.linear.com. I/H Grade Parts by Product Type Linear Technology offers over 450 OSCILLATOR, 9 analog and mixed-signal base parts REFERENCE, 12 FILTER, 13 specified from -40°C to 85°C or beyond for the most demanding MUX, 5 COMPARATOR, 29 industrial signal chain applications. ADC, 162 AMPLIFIER, 170 DAC, 55 Industrial Signal Chain AMPLIFIERS Precision Amplifiers–pg 02 Low Bias Current Amplifiers–pg 03 Low Power Amplifiers–pg 04 Speed + Precision Amplifiers–pg 05 Instrumentation Amplifiers–pg 06 PGAs and Difference Amplifiers–pg 07 Current Sense Amplifiers–pg 08 ADCs No Latency Delta-Sigma™ ADCs–pg 10 Easy Drive Delta-Sigma ADCs–pg 11 General Purpose SAR ADCs–pg 12 High Speed ADCs–pg 16 Signal Chain Modules–pg 17 FILTERS ADC Drivers and Filters–pg 09 DACs Micropower Voltage Output–pg 18 RMS-DC CONVERSION–pg 19 PRECISION REFERENCES–pg 20 SILICON OSCILLATORS–pg 21 02 IND U STR IA L SIG N A L CHA I N PREC IS ION OPERAT ION AL AMPLIF IERS Precision Operational Amplifiers Linear Technology's precision amplifiers combine DC accuracy with other critical features such as low noise, low power, small packages and rail-to-rail inputs and outputs, making them useful in a wide range of applications. LT®1637 . Over-The-Top®: Operates with Inputs Above V + . Rail-to-Rail Input and Output . Micropower: 250µA Supply Current Max . Gain-Bandwidth Product: 1.1MHz . Slew Rate: 0.4V/µs . Low Input Offset Voltage: 350µV Max . Reverse Battery Protection to 25V . High CMRR: 110dB . Available in 8-Lead MSOP, PDIP and SO Packages; Switchable Precision Current Source 4V TO 44V + 4.7µF LT1004-1.2 R 2k R* + TP0610 LT1637 – IOUT SHDN IOUT = 1.2 R e.g., 10mA = 1201 *OPTIONAL FOR LOW OUTPUT CURRENTS, R* = R plus a Tiny (3mm × 3mm × 0.8mm) DFN Package Precision Op Amps Part No Amplifiers per Package VOS Max 25°C (µV) VOS TC Max (µV/°C) IB Max 25°C (nA) AVOL (dB) en (nV/ Hz ) Typ GBW (MHz) Rail-toRail IS/Amp Max (mA) LTC ® 2054/5 1/2 3 0.03 0.15 VSUPPLY (V) 140 – 0.5 Out 0.15 LTC2050/1/2 1/2/4 3 0.03 2.7–7 0.075 140 – 3 Out 1.2 LTC2050/1/2HV 1/2/4 3 2.7–7 0.03 0.15 140 – 3 Out 1.5 2.7–12 LTC2054/5HV 1/2 LTC1150/1 1/2 5 0.03 0.15 140 – 0.5 Out 0.18 2.7–12 5 0.05 0.1 – – 2.5 – 1.5 4.75–32 LT1007 LTC6078/9 1 25 0.6 35 146 2.5 8 – 4 4–44 2/4 25 0.7 0.001 130 18 0.75 In/Out 0.072 2.7–5.5 LT6010 1 35 0.8 0.11 126 14 0.33 Out 0.15 2.7–40 LT1028 1 40 0.8 90 150 0.85 75 9.5 8–44 LT1881/2 2/4 50 0.8 0.2 124 14 1 Out 0.9 2.4–40 LT1884/5 2/4 50 0.8 0.4 124 9.5 2 Out 0.9 2.4–40 LT1991 1 50 1 5 – 46 0.56 In/Out 0.11 2.4–40 LT6011/2 2/4 60 0.8 0.3 126 14 0.33 Out 0.15 2.4–40 LT1677 1 60 1.5 20 146 3.2 7.2 In/Out 3.5 2.5–44 LTC6081/2 2/4 70 0.8 0.001 120 13 3.6 In/Out 0.425 2.7–5.5 LT1468/9 1/2 75 2 40 139 5 90 5 6–36 LT1678/9 2/4 100 3 20 130 3.9 20 In/Out 3.5 2.7–36 LTC6244HV 2 100 2.5 0.075 128 8 50 Out 7.4 2.8–10.5 LTC6241/2 2/4 125 2.5 0.075 124 7 18 Out 2.2 2.8–6 LTC6241/2HV 2/4 175 2.5 0.075 124 7 18 Out 2.2 2.8–11 LT1013/4 2/4 150 2 20 138 22 0.5 4–44 LTC6240 1 175 2.5 0.001 124 7 18 Out 2.4 2.8–6 LTC6240HV 1 250 2.5 0.001 129 7 18 Out 3.3 2.8–11 LT1637 1 350 3 50 118 27 1 In/Out 0.25 1.8–44 LT1800/1/2 1/2/4 350 5 250 99 8.5 80 In/Out 2 2.3–12.6 LT1494/5/6 1/2/4 375 2 1 114 185 0.003 In/Out 0.0015 2.1–36 LT1490/1A 2/4 500 4 8 124 50 0.18 In/Out 0.055 2–44 LT6003/4/5 1/2/4 500 5 0.09 114 325 0.002 In/Out 0.001 1.6–16 LT6202/3/4 1/2/4 500 24 7000 106 1.9 100 In/Out 3.5 2.5–12.6 LT1638/9 2/4 600 6 50 124 20 1.2 In/Out 0.23 2.2–44 LT6000/1/2 1/2/4 750 5 5 96 75 0.05 In/Out 0.016 1.8–18 LTC6087/8 2/4 750 5 1 typ 136 12 14 In/Out 1.3 2.7–6 LTC6084/5 2/4 750 5 1 typ 126 27 1.5 In/Out 0.13 2.5–6 IND U STR IA L SIG N A L CHA I N 03 L OW BIAS C U RREN T OPERAT ION AL AMPLIF IERS Low Bias Current Operational Amplifiers LTC6078 . Maximum Offset Voltage of 25µV (25°C) . Maximum Offset Drift of 0.7µV/°C . Maximum Input Bias: Input Bias vs Temperature 180 VS = 5V 160 VCM = 2.5V INPUT BIAS CURRENT (pA) CMOS operational amplifiers are known for their low bias current and low power operation. Linear Technology’s family of CMOS op amps combine these advantages with high precision usually associated with bipolar amplifiers. The LTC6241 features peak-topeak input referred noise of 550nV from 0.1Hz to 10Hz, allowing it to extract even the tiniest of signals from high impedance sensors. The LTC6078 delivers extraordinary DC precision at the lowest possible supply current, making it ideal for portable and looppowered instrumentation applications. 140 120 100 80 60 40 20 0 0 1pA (25°C) 50pA ()85°C) . Micropower: 54µA per Amp . 95dB CMRR (Min) . 100dB PSRR (Min) . Input Noise Voltage: 16nV/ Hz . Rail-to-Rail Inputs and Outputs . 2.7V to 5.5V Operation Voltage 25 50 75 100 TEMPERATURE ('C) 125 Thermocouple Signal Conditioner 5V SMT 1/4W 150k NORMALLY FLOATING + 1/2 LTC6078 0.1µF OMEGA 5TC-TT-K-30-36 THERMOCOUPLE SMT 1/4W 150k – 5V 2.49M K LT1025 OUT = 10mV/∞C 0∞C TO 500∞C ±0.5∞C 1k 40.6µV/∞C 100pF 10k 5.6pF AMPLIFIER PROTECTED TO ±190V, ACCIDENTAL CONTACT Low Bias Current Op Amps Products Amplifiers per Package VOS Max 25°C (µV) TCVOS Max (µV/°C) IB Max 25°C (pA) en Typ (nV/ Hz ) GBW Typ (MHz) SR Typ (V/µs) I S / Amp Max 25°C (mA) VSUPPLY (V) Packages LTC6078/9 2/4 25 0.7 1 18 0.75 0.05 0.072 2.7 to 6 MS-8, DFN/DFN, SSOP LTC6081/2 2/4 70 0.8 1 13 3.6 1 0.425 2.7 to 5.5 MS-8, DFN/DFN, SSOP LTC6240 1 175 2.5 1 7 18 10 2.4 2.8 to 6 SOT-23, SO-8 LTC6240HV 1 250 2.5 1 7 18 10 3.3 2.8 to 11 SOT-23, SO-8 LT1462/3 2/4 800 20 2 76 0.175 0.13 0.045 10 to 40 SO-8, DIP, SO-14 LT1057/8 2/4 450 10 50 13 5 14 2.5 8 to 40 SO-8, DIP, SO-16 LTC2050/1/2 1/2/4 3 0.03 75 – 3 2 1.2 2.7 to 12 SOT-23, DFN, MSOP, SO-8 LTC6244 2 100 2.5 75 8 50 35 7.4 2.8 to 6 MS-8, DFN LTC6244HV 2 100 2.5 75 8 50 35 7.4 2.8 to 10.5 MS-8, DFN LTC6241/2 2/4 125 2.5 75 7 18 10 2.2 2.8 to 6 DFN, SO-8/SSOP, DFN LTC6241/2HV 2/4 175 2.5 75 7 18 10 2.2 2.8 to 11 DFN, SO-8/SSOP, DFN LT6003/4/5 1/2/4 500 5 90 325 0.002 0.0008 1 1.6 to 16 SOT23-5, DFN/MS-8, TSSOP LTC2054/5 2/4 3 0.03 150 – 0.5 0.5 150 2.7 to 6 SOT23-5, DFN-8, SO-8 LTC6084/5 2/4 750 5 1 typ 27 1.5 0.5 0.13 2.5 to 6 DFN-8, MS-8, DFN-16, SSOP-16 LTC6087/8 2/4 750 5 1 typ 12 14 7.2 1.3 2.7 to 5.5 MS-8, DFN/SSOP,DFN IND U STR IA L SIG N A L CHA I N L OW POWER OPERAT ION AL AMPLIF IERS Low Power Operational Amplifiers Linear Technology’s family of low power precision operational amplifiers are designed to maximize battery life and performance through a combination of low operating current and wide supply range. These products also maintain excellent precision required for the most advanced handheld instruments. Micropower Oxygen Sensor 10M 1% 100k 1% LT6003 100k 1% OXYGEN SENSOR CITY TECHNOLOGY 4OX(2) . Wide Supply Range: 1.6V to 16V . Low Supply Current: 1µA/Amplifier Max . Low Input Bias Current: 90pA Max . Low Input Offset Voltage: 500µV Max . Low Input Offset Voltage Drift: 2µV/°C . AVOL Driving 20k Load: 100,000 Min . Capacitive Load Handling: 500pF . Specified from –40°C to 125°C . Tiny 2mm x 2mm DFN or SOT-23 Package 1.6V LT6003 VOUT = 1V IN AIR ISUPPLY = 0.95µA 100Ω 1% www.citytech.com VOS Distribution 35 PERCENT OF UNITS (%) 04 VS = 5V, 0V VCM = 2.5V 30 MS8 PACKAGE 1377 AMPLIFIERS 25 20 15 10 5 0 –600 –400 –200 0 200 400 INPUT OFFSET VOLTAGE (µV) 600 Low Power Op Amps Part No Amplifiers per Package I S / Amp (mA) Max IB (nA) en (nV/ Hz ) Typ GBW (MHz) Typ VOS (mV) VSUPPLY (V) Rail-toRail LT6003/4/5 1/2/4 0.001 0.5 0.09 325 0.002 1.6 to 16 In/Out SOT23-5, DFN-4, DFN-8, MS-8, DFN-16, TSSOP-16 LT1494/5/6 1/2/4 0.0015 0.375 1 185 0.0027 2.1 to 36 In/Out DIP-8, MS-8, SO-8, DIP-14, SO-14 LT1672/3/4 1/2/4 0.002 0.375 1 185 0.012 2.1 to 36 In/Out MS-8, SO-8, DIP-14, SO-14, SSOP-16 Packages LT6000/1/2 1/2/4 0.016 0.6 5 75 0.05 1.8 to 18 In/Out DFN, MSOP, SSOP-16 LT1178/9 2/4 0.017 0.07 5 49 0.085 2 to 44 – SO-8, DIP, SO-16 LT2178/9 2/4 18 0.07 5 49 0.0175 2.2 to 44 – SO-8, SO-14 LT1462/3 2/4 0.045 0.8 0.002 76 0.175 10 to 40 – SO-8, SO-14, PDIP LT2078/9 2/4 0.05 0.07 8 28 0.2 2.3 to 44 – SO-8, SO-14 LT1078/9 2/4 0.05 0.07 8 28 0.2 2.2 to 44 – SO-8, SO-16, PDIP LTC2055HV 2 0.15 0.003 0.15 – 0.5 2.7 to 12 Out DFN-8, MS-8 LTC2054HV 1 0.175 0.003 0.15 – 0.5 2.7 to 12 Out SOT23-5 LT1635 1 0.2 1.3 4.5 50 0.175 1.1 to 14 Out DIP-8, SO-8 IND U STR IA L SIG N A L CHA I N 05 S PEED + PREC IS ION OPERAT ION AL AMPLIF IERS Speed + Precision Operational Amplifiers Linear Technology Speed + Precision Amplifiers offer an excellent combination of high gain bandwidth product and fast slew rate, low noise and high precision, making them an excellent choice in data acquisition and high speed sensor conditioning applications. Very Low Noise Large Area Photodiode 0.25pF 5V PHILIPS BF862 JFET 1M 5V LTC6244 4.99k . Input Bias Current: 1pA (Typ at 25°C) . Low Offset Voltage: 100µV Max . Low Offset Drift: 2.5µV/°C Max . 0.1Hz to 10Hz Noise: 1.5µVP-P . Slew Rate: 40V/µs . Gain Bandwidth Product: 50MHz . Output Swings Rail-to-Rail . Supply Operation: 1/2 LTC6244HV IPD 4.7µF* VOUT = 1M • IPD BW = 350kHz NOISE = 291nV AT 10kHz – –5V VOUT + 4.99k –5V VBB HAMAMATSU LARGE AREA PHOTODIODE S1227-1010BQ CPD = 3000pF * CAN BE MICROPHONIC, FILM, X7R, IF NEEDED. VOS Distribution 120 2.8V to 6V LTC6244 110 . Low Input Capacitance: 2.1pF NUMBER OF UNITS 100 90 LTC6244MS8 VS = 5V, 0V VCM = 2.5V TA = 25∞C 80 70 60 50 40 30 20 10 0 –60 Speed + Precision Operational Amplifiers 20 40 –40 –20 0 INPUT OFFSET VOLTAGE (µV) 60 Part No Amplifiers per Package GBW Typ (MHz) SR Typ (V/µs) VOS Max (µV) VOS TC Max (µV/°C) IB Max (nA) en Rail-to- (nV/ Hz ) Rail Typ IS/Amp Max (mA) VSUPPLY (V) Packages LT1806/7 1/2 325 125 550 5 4000 In/Out 3.5 13 2.5–12.6 SOT23-6, SO-8, MSOP-8 LT6230/1/2 1/2/4 215 70 500 3 10000 Out 1.1 3.75 3–12.6 SOT23-6, DFN-8, SO-8, SSOP-16 LT6202/3/4 1/2/4 100 25 500 24 7000 In/Out 1.9 3.5 2.5–12.6 SOT23-6, DFN-8, SO-8, MSOP-8, SO-14, SSOP-16 LT1468 /9 1/2 90 22 75 2 40 – 5 5 6–36 S0-8, PDIP LT1800/1/2 1/2/4 80 25 350 5 250 In/Out 8.5 2 2.3–12.6 SOT23-5, DFN-8, SO-8, MSOP-8, SO-14 LT1028 1 75 15 40 0.8 90 – 0.85 9.5 8–44 SO-8, PDIP LT1037 1 60 15 25 0.6 35 – 2.5 4.3 8–44 SO-8, PDIP LT6220/1/2 1/2/4 60 20 350 5 150 In/Out 10 1 2.2–12.6 SOT23-5, DFN-8, SO-8, SSOP-16 LT6233/4/5 1/2/4 60 17 500 3 3000 Out 1.9 1.25 3–12.6 SOT23-6, DFN-8, SO-8, SSOP-16 LTC6244HV 2 50 35 100 2.5 0.075 Out 8 7.4 2.8–10.5 DFN-8, MSOP-8 LT1630/1 2/4 30 9.2 525 5.5 1000 In/Out 6 4.4 2.6–36 SO-8, PDIP, SO-14 1215/6 2/4 23 30 300 2.5 500 – 12 6.6 2.5–36 SO-8, PDIP, SO-14 LT1678/9 2/4 20 6 100 3 20 In/Out 3.9 3.4 3–36 SO-8, SO-14 LTC6241/2HV 2/4 18 10 125 2.5 0.075 Out 7 2.2 2.8–11 DFN-8, SO-16, DFN-16, SSOP-16 LTC6240HV 1 18 10 175 2.5 0.001 Out 7 2.4 2.8–11 SOT23-5, SO-8 LTC6087/8 2/4 14 7.2 750 5 0.001 typ In/Out 12 1.3 2.7–5.5 DFN-10, MSOP-8, DFN-16, SSOP-16 LT1124/5 2/4 12.5 4.5 70 1 20 – 2.7 2.75 8–44 SO-8, PDIP, SO-16 06 IND U STR IA L SIG N A L CHA I N IN S T RU MEN TAT ION AMPLIF IERS Instrumentation Amplifiers Zero Drift, Precision Instrumentation Amplifier with Digitally Programmable Gain 2.7V to ± 5V + Zero Drift +– x1 – With very low DC offset along with high input impedance and high excellent common mode rejection, Linear Technology’s in-amps are designed to cover all ranges of applications where extreme precision and stability of the circuit are required. Many of these, such as the LTC2053 implement a zero-drift architecture, improving total system precision and eliminating the need for post assembly trim. This family of parts includes different gain-setting methods, including a single gain setting resistor, two resistors (similar to an op amp) and digitally programmable gain. From fixed gain to programmable gain, Linear Technology offers a variety of instrumentation amplifiers, suited for all your circuit needs. OUT SENSE SERIAL/ PARALLEL REF SERIAL/PARALLEL INTERFACE µP LTC6915 RESISTOR ARRAY LTC6915 . 14 Levels of Programmable Gain 0, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048 or 4096 . Parallel or Serial (SPI) Interface for Gain Setting . 125dB CMRR Independent of Gain . Gain Accuracy: 0.075% . Maximum Offset Voltage: 10µV . Maximum Offset Drift: 50nV/°C . Rail-to-Rail Input/Output . 2.7V to ±5.5V Supply Range . 3mm x 4mm DFN, SSOP-16 Packages LTC6915 Demo Board Device Gain Range VOS Max 25°C (µV) Supply Current Max 25°C (mA) CMRR Min 25°C (dB) GBW (MHz) Supply Voltage (V) Package Gain Set Comments LTC1100 10 or 100 10 2.8 104 1.8 4.75–18 SOW-16, PDIP Fixed Gain Zero Drift LT1101 10 or 100 160 0.13 100 0.37 1.8–44 SOW-16, PDIP Fixed Gain Micropower Single Supply LT1167 1–10k 40 1.3 126 1 4.6–40 SO-8, PDIP One R Set Gain Precision, Low Ib LT1168 1–10k 40 0.53 126 0.4 4.6–40 SO-8, PDIP One R Set Gain Low Ib, Low Power LT1789-1 1–1k 100 0.095 100 0.06 2.2–36 SO-8 One R Set Gain Precision, Micropower LT1789-10 10–1k 160 0.095 98 0.025 2.2–36 SO-8 One R Set Gain Precision, Micropower LT1920 1–10k 125 1.3 110 0.8 4.6–40 SO-8, PDIP One R Set Gain Precision LTC2053 Any 10 1.3 105 0.2 2.7–11 MSOP-8, DFN-8 Two Rs Set Gain Zero Drift, RRIO LTC2053SYNC Any 10 1.3 105 0.2 2.7–11 MSOP-8, DFN-8 Two Rs Set Gain Zero Drift, Rail-to-Rail, Sync to External Clock LTC6800 Any 100 1.2 90 0.2 2.7–5.5 MSOP-8, DFN-8 Two Rs Set Gain Low Cost, Zero Drift, RRIO LTC6915 1–4096 10 1.6 105 0.2 2.7–11 DFN-12, SSOP-16 Digital Gain Zero Drift, Serial/Parallel Programmable IND U STR IA L SIG N A L CHA I N P R O GR AMMABL E G AIN AMPLIF IERS AN D G AIN -S ELEC TABLE D IF F EREN C E AM PLIFIERS PGAs and Gain-Selectable Difference Amplifiers With hundreds of different gain configurations available, Linear Technology’s selectable gain amplifiers give designers precise gain just by strapping the pins. Free Configurator software shows the pin connections for your specific design. These amplifiers accurately amplify small differential voltages and reject large common mode signals. Linear Technology’s single and dual programmable gain amplifiers allow designers to change the gain on-the-fly, providing even more circuit flexibility. Rail-to-Rail Gain = 1 Difference Amplifier 5V 50k 450k VOUT = VREF + ΔVIN SWING 40mV TO EITHER RAIL ROUT <0.1Ω 150k VM(IN) ΔVIN VP(IN) – 450k + 450k – LT1991 + LT1991 450k 150k INPUT RANGE –0.5V TO 5.1V RIN = 900kΩ 4pF 50k . Difference Amplifier Gain Range: 1 to 13 . Noninverting Amplifier Gain Range: 0.07 to 14 . Inverting Amplifier Gain Range: -0.08 to -13 . Gain Error: <0.04% . Gain Drift: <3ppm/°C . Wide Supply Range: Single 2.7V to Split ±18V . Micropower: 100µA Supply Current . Precision: 50µV Maximum Input Offset Voltage . 560kHz Gain Bandwidth Product . Rail-to-Rail Output 4pF VREF = 2.5V LT1990 Demo Board PGAs and Diff Amps IS /Amp (mA) Max GBW (MHz) Gain Range Packages Comments Device Channels VSUPPLY (V) LTC6910-1 S 2.7–10.5 3 11 0, 1, 2, 5, 10, 20, 50, 100 SO-8 Digitally Controlled Programmable Gain LTC6910-2 S 2.7–10.5 3 13 0, 1, 2, 4, 8, 16, 32, 64 SO-8 Digitally Controlled Programmable Gain LTC6910-3 S 2.7–10.5 3 11 0, 1, 2, 3, 4, 5, 6, 7 SO-8 Digitally Controlled Programmable Gain LTC6911-1 D 2.7–10.5 3 11 0, 1, 2, 5, 10, 20, 50, 100 MS-10 Matched Amplifiers with Digitally Programmable Gain LTC6911-2 D 2.7–10.5 3 11 0, 1, 2, 4, 8, 16, 32, 64 MS-10 Matched Amplifiers with Digitally Programmable Gain LTC6912-1 D 2.7–10.5 2.75 30 0, 1, 2, 5, 10, 20, 50, 100 DFN-12, GN-16 Programmable Gain Amplifiers with Serial Digital Interface LTC6912-2 D 2.7–10.5 2.75 30 0, 1, 2, 4, 8, 16, 32, 64 DFN-12, GN-16 Programmable Gain Amplifiers with Serial Digital Interface LT1990 S 2.7–36 0.12 0.1 1 or 10 SO-8 ±250V Input Range G = 1, 10, µpower, Difference Amplifier LT1991 S 2.7–36 0.11 0.56 -13–14 MS-10, DFN-10 Precision, 100µA Gain Selectable Amplifier LT1995 S 5–36 8.5 30 -7– 8 MS-10, DFN-10 30MHz, 1000V/µs Gain Selectable Amplifier LT1996 S 2.7–36 0.11 0.56 -117–118 MS-10, DFN-10 Precision, 100µA Gain Selectable Amplifier LTC6915 S 2.7–11 1.6 0.2 0, 1, 2, 4, 8, 16, 32, 64, 128, DFN-12, GN-16 256, 512, 1024, 2048, or 4096 Zero Drift, Precision Instrumentation Amplifier with Digitally Programmable Gain 07 08 IND U STR IA L SIG N A L CHA I N C U RREN T S EN S E AMPL IF IERS High Side Current Sense Amplifiers High Side Current Sense Amplifiers Linear Technology offers the largest portfolio of high precision current sense amplifiers on the market. Higher precision means smaller value sense resistors, lower voltage drop and lower power/heat dissipation. LTC6102/HV . Supply Range: 4V to 60V, 70V Abs Max (LTC6102) 5V to 100V, 105V Abs Max (LTC6102HV) . ±10µV Input Offset Max . ±50nV/°C Input Offset Drift Max . Fast Response: 1µs Step Response . Gain Configurable with Two Resistors . Low Input Bias Current: Part No VOS Max 25°C (mV) VOS TC Max (µV/°C) IS Max 25°C (mA) VSENSE Max Bi(mV) directional Packages Comments LTC6102HV 10 0.05 0.45 105 no DFN-8, MS-8 Precision Zero Drift LTC6102 10 0.05 0.45 70 no DFN-8, MS-8 Precision Zero Drift LT1787HV 75 0.5 0.12 60 yes SO-8, MS-8 Precision, 60V VIN LT1787 75 0.5 0.12 36 yes SO-8, MS-8 Precision, High-Side LTC4151 4000 0.3 80 no DFN-10, MS-10 Integrated 12-Bit I2C ADC LT6106 250 1 typ 0.095 44 no SOT23-5 Low Cost 36V High-Side LT6107 250 1 typ 0.095 44 no SOT23-5 Wide Temperature range: -55C to 150C LT6105 300 0.5 typ 0.3 44 no DFN-6, MS-8 Wide Input Range -0.3V to 44V (Independent of V+) LTC6101HV 300 1 0.45 105 no SOT23-5, MS-8 High Voltage, High-Side LTC6101 300 1 0.45 70 no SOT23-5, MS-8 High Voltage, High-Side LT6100 300 1.5 typ 0.13 48 no DFN-8, MS-8 Precision, Gain Selectable LTC6103 450 1.5 0.5 70 no MS-8 Dual High Voltage, High-Side LTC6104 450 1.5 0.52 70 yes MS-8 High Voltage, HighSide, Bidirectional 3nA Max . Operating Temperature Range: –40°C to 125°C . PSRR: 130dB Min . Available in 8-Lead MSOP and 3mm × 3mm DFN Packages LTC6102 Demo Board High Voltage Current Sensing with 16-Bit Resolution ILOAD – VSENSE Gain of 50 Current Sense Amplifier RIN 100Ω SOURCE – 0.3V TO 44V RIN2 VS+ 100Ω 5V TO 105V –IN + – V– 5V TO 44V R1 200Ω + +IN L O A D Over-The-Top Current Sense V+ 0.02Ω RIN1 100Ω LT6105 +IN + –IN VOUT – V+ VOUT = 49.9 • VSENSE – VOUT = LOAD VOUT = (VS+ – VS–) • VOUT (0V TO 4.3V) ILOAD V– 2.85V TO 36V TO LOAD 5V LT1636 LTC6101HV ROUT 4.99k + ROUT 4.99k VS– OUT RS 0.2Ω VOUT = 1V/A ILOAD = ROUT RIN VOUT (RS)(R2/R1) R2 2k ROUT • VSENSE RIN Selected Op Amps for Current Sense Applications Part No VOS Max 25°C (µV) VOS Drift Max 25°C (µV/°C) ISUPPLY Max 25°C (mA) SR Typ (V/µs) Sense Voltage Max (V) LTC2050/1/2 3 0.03 1.5 2 12 LT1991 50 1 0.11 0.12 LTC4150 100 LT1636 225 5 0.055 LT1637/8/9 350 3 0.25 Packages Comments SOT-23, DFN-8, MSOP, SO-8, SSOP-16 Zero Drift Amplifiers 60 DFN-10, MS-10 Precision, 100µA, Gain Selectable Difference Amplifier 9 MS-8 Coulomb Counter 0.045 44 DFN-8, DIP-8, MS-8, SO-8 Over-The-Top Micropower Op Amp 0.35 44 DFN-8, DIP-8, MS-8, SO-8, DIP-14, SO-14 Single/Dual/Quad, High Voltage Over-The-Top Input 0.14 LT1494/5/6 375 2 0.0015 .001 36V DIP-8, MS-8, SO-8, DIP-14, SO-14 Single/Dual/Quad, Rail-to-Rail I/O Over-The-Top LT1490/1A 500 4 0.055 0.06 44 DFN-8, DIP-8, MS-8, SO-8, DIP-14, SO-14 Dual/Quad, Rail-to-Rail I/O Over-The-Top LT1990 5200 22 0.18 0.55 250 SO-8 Diff Amp, Built-In Resistors, ±250V Input LT1995 5000 26 8.5 1000 15.5 MS-8 30Mhz Diff Amp, Built-In Resistors * See additional applications in Linear Technology's Online Current Sense Circuit Collection: http://www.linear.com/currentsense IND U STR IA L SIG N A L CHA I N 09 AD C D RIV ERS /F ILT ERS High Speed Differential ADC Drivers/Filters As new data converters are developed with higher throughput and resolution, the demands on the circuits that drive these converters increase significantly. Several products from Linear Technology address this challenge. Linear Technology offers high speed ADC drivers with features such as integrated gain-setting resistors, integrated filters, low noise and distortion, rail-to-rail operation and matched dual channels. LTC6420-20 . Matched Gain ±0.1dB . Matched Phase ±0.1° at 100MHz . Channel Separation 80dB at 100MHz . 1.8GHz –3dB Bandwidth; Fixed Gain of 10V/V (20dB) . IMD3 = –84dBc at 100MHz, 2VP-P . Equivalent OIP3 = 46dBm at 100MHz . 1nV/3Hz Internal Op Amp Noise . 6.2dB Noise Figure . Differential Inputs and Outputs . Rail-to-Rail Output Swing . 80mA Supply Current (240mW) per Amplifier . 1.1V to 1.6V Output Common Mode Voltage, Adjustable . DC- or AC-Coupled Operation . 20-Lead 3mm × 4mm × 0.75mm QFN Package LTC6420 Demo Board Matched Dual Amplifier with Output Common Mode Biasing 3V 0.1µF 1000pF VOCM A V+ A ZIN = 200Ω –IN A 100Ω +IN A 100Ω – 12.5Ω + 12.5Ω +OUT A VOCM A 0.1µF –OUT A 1000Ω V– LTC6420-20 0.1µF VIN B ENABLEA 1000Ω 0.1µF VIN A VOCM A +IN B 100Ω –IN B 100Ω VOCM A V– ±0.1dB GAIN MATCHING ±0.1° PHASE MATCHING AT 100MHz 1000Ω 12.5Ω + –OUT B VOCM B 0.1µF 12.5Ω – +OUT B VOCM B 1000Ω ZIN = 200Ω VOCM B V+ B 0.1µF 1000pF ENABLEB VOCM B 3V Differential ADC Drivers and Filters Part No Input Frequency Range Gain Distortion Noise Supply Voltage Supply Current Features LT1994 DC-3MHz R-Set -94dBc @ 1MHz 3nV/ Hz 2.375V to 12.6V 14mA Wide VS Range LTC6403 DC-15MHz R-Set -89dBc @ 5MHz 2.8nV/ Hz 2.7V to 5.5V 11mA Low Power LT6600 DC-20MHz R-Set -88dBc @ 1MHz 14nV/ Hz 3V to 11V 35mA Integrated 4th Order Filter LT6402 DC-30MHz 6, 12, 20dB -84dBc @ 10MHz 1.85nV/ Hz 4V to 5.25V 30mA Fixed Gain LT6411 DC-30MHz 0, 6dB -77dBc @ 30MHz 8nV/ Hz 4.5V to 12.5V 16mA Selectable Gain LTC6404 DC-30MHz R-Set -92dBc @ 10MHz 1.5nV/ Hz 2.7V to 5.5V 27mA Low Noise LTC6405 DC-60MHz R-Set -90dBc @ 20MHz 1.6nV/ Hz 2.7V to 5.25V 18mA RR In LTC6406 DC-60MHz R-Set -72dBc @ 50MHz 1.6nV/ Hz 2.7V to 3.5V 18mA RR In LT1993 DC-70MHz 6, 12, 20dB -80dBc @ 50MHz 2.15nV/ Hz 4V to 5.25V 100mA Fixed Gain LTC6401 DC-140MHz 8, 14, 20, 26dB -88dBc @ 70MHz 2.1nV/ Hz 2.85V to 3.5V 45mA Fixed Gain LTC6421 DC-140MHz 8, 14, 20, 26dB -74dBc @ 100MHz 2.2nV/ Hz 2.85V to 3.5V 40mA Matched Dual LTC6400 DC-300MHz 8, 14, 20, 26dB -81dBc @ 140MHz 2.1nV/ Hz 2.85V to 3.5V 85mA Fixed Gain LTC6420 DC-300MHz 8, 14, 20, 26dB -80dBc @ 100MHz 2.2nV/ Hz 2.85V to 3.5V 80mA Matched Dual LTC6410-6 DC-300MHz 6dB -62dBc @ 140MHz 11dB 2.8V to 5.25V 125mA RF Gain Block 10 IND U STR IA L SIG N A L CHA I N D ATA C ON V ERS ION F OR L OW F REQU EN C Y S IG N ALS Data Conversion for Low Frequency Signals Linear Technology’s family of No Latency Delta-Sigma analog-to-digital converters (ADCs) is unrivaled in performance, ease of use and tiny package sizes. With ADC resolutions from 16 bits up to 24 bits, up to 16 input channels and either I2C or SPI serial interfaces, we offer a data converter for nearly any precision measurement application. The entire delta-sigma ADC portfolio is supported with evaluation boards and a free Quick Eval software tool (www.linear.com/company/software.jsp), complete with the DC590B USB data acquisition board. LTC2449 . Up to Eight Differential or 16 Single-Ended Input Channels . Up to 8kHz Output Rate, 4kHz Multiplexing Rate . Selectable Speed/Resolution with Variable Oversampling Ratio 2µVRMS Noise at 1.76kHz Output Rate 200nVRMS Noise at 13.8Hz Output Rate with Simultaneous 50/60Hz Rejection . No Latency Mode, Each Conversion is Accurate Even After a New Channel is Selected . 0.0005% INL, No Missing Codes . Internal Oscillator—No External Components . Tiny 5mm x 7mm QFN Package . Differential Input and Differential Reference with GND to V LTC2449 Demo Board CC Common Mode Range Quick Eval User Interface DC590B USB Serial Controller No Latency Delta-Sigma ADCs (<8kHz Output Rate) Part No Bits Input Channels Sample Rate (sps) LTC2440 24 1 Differential 4000 200nV 2.5µV 10ppm LTC2442 24 2 Differential/ 4 Single-Ended 8000 220nV 2.5µV 10ppm LTC2444 24 4 Differential/ 8 Single-Ended 8000 280nV 2.5µV 10ppm LTC2445 24 4 Differential/ 8 Single-Ended 8000 200nV 2.5µV 10ppm MUXOUT/ADCIN Pins Allow External Buffer in Front of ADC QFN-38 (5 x 7) LTC2446 24 4 Differential/ 8 Single-Ended 8000 280nV 2.5µV 10ppm Multiple Reference Inputs QFN-38 (5 x 7) LTC2447 24 4 Differential/ 8 Single-Ended 8000 200nV 2.5µV 10ppm Multiple Reference Inputs, MUXOUT/ADCIN Pins Allow External Buffer in Front of ADC QFN-38 (5 x 7) LTC2448 24 8 Differential/ 16 Single-Ended 8000 280nV 2.5µV 10ppm LTC2449 24 8 Differential/ 16 Single-Ended 8000 200nV 2.5µV 10ppm RMS Noise Offset Error Full-Scale Error Comments Packages (mm × mm) SSOP-16 Internal Amplifiers SSOP-36 QFN-38 (5 x 7) QFN-38 (5 x 7) MUXOUT/ADCIN Pins Allow External Buffer in Front of ADC QFN-38 (5 x 7) IND U STR IA L SIG N A L CHA I N D ATA C ON V ERS ION F OR L OW F REQU EN C Y S IG N ALS Easy Drive™ and Ultra-Tiny Delta-Sigma ADCs Voted one of Electronic Design’s ADCs of the Year in 2007, the LTC2450 family of ultra-tiny ADCs are ideal for measuring automotive signals such as temperature, pressure and viscosity. For higher precision applications, Linear offers a complete family of single channel, dual channel, and eight channel pin- and software-compatible 24-bit and 16-bit Easy Drive ADCs. Ultra-Tiny Delta Sigma ADCs Part No Bits Input Channels (Differential/SingleEnded) LTC2450 16 1 1.4µV SPI 60Hz 0.05% DFN-6 (2 x 2) LTC2451 16 1 1.4µV I2C 60Hz 0.05% DFN-8 (3 x 2), TSOT23-8 LTC2452 16 1 1.4µV SPI 60Hz 0.05% DFN-8 (3 x 2), TSOT23-8 LTC2453 16 1 1.4µV I2C 60Hz 0.05% DFN-8 (3 x 2), TSOT23-8 LTC2480 16 1 0.6µV SPI 15Hz 0.004% • • DFN-10 (3 x 3) 15Hz 0.004% • • DFN-10 (3 x 3) RMS Noise I/O Sample Rate Total Unadjusted Error (Max) 2 PGA Temp Sensor Packages (mm x mm) LTC2481 16 1 0.6µV IC LTC2482 16 1 0.6µV SPI 7.5Hz 0.004% DFN-10 (3 x 3) LTC2483 16 1 0.6µV I2C 7.5Hz 0.004% DFN-10 (3 x 3) LTC2484 24 1 0.6µV SPI 15Hz 0.004% • DFN-10 (3 x 3) • DFN-10 (3 x 3) 2 LTC2485 24 1 0.6µV IC 15Hz 0.004% LTC2486 16 2/4 0.6µV SPI 15Hz 0.004% • • DFN-14 (4 x 3) LTC2487 16 2/4 0.6µV I2C 15Hz 0.004% • • DFN-14 (4 x 3) LTC2488 16 2/4 0.6µV SPI 7.5Hz 0.004% DFN-14 (4 x 3) DFN-14 (4 x 3) 2 LTC2489 16 2/4 0.6µV IC 7.5Hz 0.004% LTC2492 24 2/4 0.6µV SPI 15Hz 0.004% • DFN-14 (4 x 3) LTC2493 24 2/4 0.6µV I2C 15Hz 0.004% • DFN-14 (4 x 3) LTC2494 16 8/16 0.6µV SPI 15Hz 0.004% • • DFN-38 (5 x 7) 15Hz 0.004% • • DFN-38 (5 x 7) 2 LTC2495 16 8/16 0.6µV IC LTC2496 16 8/16 0.6µV SPI 7.5Hz 0.004% DFN-38 (5 x 7) LTC2497 16 8/16 0.6µV I2C 7.5Hz 0.004% DFN-38 (5 x 7) LTC2498 24 8/16 0.6µV SPI 15Hz 0.004% • DFN-38 (5 x 7) 15Hz 0.004% • DFN-38 (5 x 7) LTC2499 24 8/16 2 0.6µV IC LTC2492 Allows Easy Measurement of Multiple Thermistors or High Impedance Sensors 5V 5V R1 51.1k C4 0.1µF 12 10µF IIN+ = 0 R3 10k TO 100k 0.1µF C3 0.1µF R4 51.1k IIN– = 0 REF + 14 REF– 9 11 + 0.1µF 10k TO 100k 10 5V 102k 7 1k LT1494 – 1 FO = EXTERNAL OSCILLATOR = INTERNAL OSCILLATOR LTC2492 13 8 5V VCC CH0 2 SDI 3 SCK SDO 3-WIRE SPI INTERFACE 5 CH1 CH2 4 CS CH3 COM GND 6 0.1µF 1k 0.1µF Ultra-Tiny ADC Demo Board 11 12 IND U STR IA L SIG N A L CHA I N S IMU LTAN EOU S S AMPL IN G AD C s General Purpose SAR ADCs Linear offers a wide range of general purpose ADCs from 8 bits, 12 bits, up to 16 bits. These SAR ADCs feature excellent AC and DC performance with low power. From single input channel to multiplexed/simultaneous sampling applications, Linear has the right general purpose/SAR ADC for you. LTC2351 . 1.5Msps ADC with Six Simultaneously Simultaneous Sampling ADCs Sampled Differential Inputs . 250ksps Throughput per Channel . 75dB SINAD . 3V Single Supply Operation (16.5mW @ 1.5Msps) . 2.5V Internal Reference, Can be Overdriven with External Reference . 3-Wire SPI-Compatible Serial Interface . 0V to 2.5V Unipolar, or ±1.25V Bipolar Differential Input Range Part No Bits Input Channels Input Range Sample Rate Packages (mm x mm) LTC2351-14 14 6 Differential 0V–2.5V or ±1.25V 1.5Msps QFN-32 (5 x 5) LTC1408 14 6 Differential 0V–2.5V or ±1.25V 600ksps QFN-32 (5 x 5) LTC1407A 14 2 Differential 0V–2.5V 3Msps MSOP-10 LTC1407A-1 14 2 Differential ±1.25V 3Msps MSOP-10 LTC2351-12 12 6 Differential 0V–2.5V or ±1.25V 1.5Msps QFN-32 (5 x 5) LTC1408-12 12 6 Differential 0V–2.5V or ±1.25V 600ksps QFN-32 (5 x 5) LTC1407 12 2 Differential 0V–2.5V 3Msps MSOP-10 LTC1407-1 12 2 Differential ±1.25V 3Msps MSOP-10 . Small 32-Pin (5mm × 5mm) QFN Package LTC2351-14 Block Diagram 10µF CH5– 21 CH4– 18 CH3– 15 12 13 CH2– CH2+ 11 – 10 S AND H S AND H 9 CH1– CH1+ 8 – 7 CH0– 6 CH0+ 5 – S AND H VDD VCC 24 4 + – CH3+ 14 + S AND H 16 + – CH4+ 17 + S AND H 19 + + – CH5+ 20 3V S AND H 1.5Msps 12-BIT ADC 25 12-BIT LATCH 0 12-BIT LATCH 1 12-BIT LATCH 2 12-BIT LATCH 3 12-BIT LATCH 4 12-BIT LATCH 5 THREESTATE SERIAL OUTPUT PORT 3 1 2 OVDD 3V SD0 OGND MUX TIMING LOGIC 2.5V REFERENCE 30 32 31 33 22 GND 10µF 23 29 VREF BIP 26 27 SEL2 SEL1 28 SEL0 CONV SCK DGND 0.1µF IND U STR IA L SIG N A L CHA I N 13 FAS T, T IN Y S IN G LE C H AN N EL AD C s Fast, Tiny Single Channel ADCs LTC2366 LTC2366: 3Msps 12-Bit ADC . 12-Bit Resolution . Pin- and Software-Compatible 3Msps/1Msps/ 3V LTC2366 10µF 500ksps/250ksps/100ksps Family . Low Noise: 73dB SNR . Low Power Dissipation: 6mW @ 1Msps . Single Supply 2.35V to 3.6V Operation . No Data Latency . Sleep Mode with 0.1µA Typical Supply Current . Dedicated External Reference and OVDD Digital ANALOG INPUT 0V TO 3V VDD CS VREF SDO GND SCK AIN OVDD SERIAL DATA LINK TO ASIC, PLD, MPU, DSP OR SHIFT REGISTERS 4.7µF DIGITAL OUTPUT SUPPLY 1V TO 3.6V Output Supply . SPI/MICROWIRE-Compatible Serial I/O . Guaranteed Operation from –40°C to 125°C . Tiny 6- and 8-Lead TSOT-23 Plastic Packages Fast, Tiny Single Channel ADCs I/O Power @ Max Sample Rate Maximum Ambient Temperature Packages Part No Bits Sample Rate LTC2355-14 14 3.5Msps 3.1V–3.6V 0V–2.5V Serial 18mW 85°C MSOP-10 LTC2356-14 14 3.5Msps 3.1V–3.6V ±1.25V Serial 18mW 85°C MSOP-10 LTC1403A 14 2.8Msps 2.7V–3.6V 0V–2.5V Serial 12mW 125°C MSOP-10 LTC1403A-1 14 2.8Msps 2.7V–3.6V ±1.25V Serial 12mW 85°C MSOP-10 LTC1414 14 2.2Msps ±5V ±2.5V Parallel 175mW 85°C SSOP-28 LTC2355-12 12 3.5Msps 3.1V–3.6V 0V–2.5V Serial 18mW 85°C MSOP-10 LTC2356-12 12 3.5Msps 3.1V–3.6V ±1.25V Serial 18mW 85°C MSOP-10 LTC2366 12 3Msps 2.35V–3.6V 0V–3.6V Serial 7.8mW 125°C TSOT23-6/8 LTC1412 12 3Msps ±5V ±2.5V Parallel 150mW 85°C SSOP-28 LTC1403 12 2.8Msps 2.7V–3.6V 0V–2.5V Serial 12mW 125°C MSOP-10 LTC1403-1 12 2.8Msps 2.7V–3.6V ±1.25V Serial 12mW 85°C MSOP-10 LTC2365 12 1Msps 2.35V–3.6V 0V–3.6V Serial 6mW 125°C TSOT23-6/8 LTC2362 12 500ksps 2.35V–3.6V 0V–3.6V Serial 3.3mW 125°C TSOT23-6/8 LTC2361 12 250ksps 2.35V–3.6V 0V–3.6V Serial 2.2mW 125°C TSOT23-6/8 LTC2360 12 100ksps 2.35V–3.6V 0V–3.6V Serial 1.5mW 125°C TSOT23-6/8 VCC Input Range IND U STR IA L SIG N A L CHA I N G EN ERAL PU RPOS E AN ALOG -T O-D IG ITAL C ON V ERT ERS General Purpose ADCs LTC1867 16-Bit, 8-Channel, 200ksps ADC . 8 Single-Ended Inputs, 4 Differential Inputs, or 5V Combinations of Both . 16-Bit No Missing Codes and ±2LSB INL (Max) . Sample Rate: 200ksps . Unipolar or Bipolar Conversion Modes . Internal or External Reference . Low Power: 1.3mA at 200ksps, 0.76mA at 100ksps CH0 LTC1867 CH1 16-BIT – 200ksps ADC CH3 CH4 CH5 SDI + CH2 ANALOG INPUT MUX SDO SERIAL PORT SCK CS/CONV CH6 Supply Current vs Sampling Frequency VREF 2.2µF 2.5V REF CH7/COM REFCOMP 2.0 S U P P LY C U R R E N T (mA) 14 10µF 1.5 1.0 0.5 0.01 1 10 100 1000 f S A MP LE (k s p s ) LTC1867 Demo Board Low Power Serial ADCs Input Span VCC Power (mW) I/O Packages (mm x mm) 200 (175) 0V – 4.096V or ±2.048 (0V – 2.5V or ±1.25V) 5V (3V) 6.5 (2.25) SPI SSOP-16 2 Single-Ended 250 (150) 0V– 5V (0V to 3V) 5V (3V) 4.25 (2.25) SPI SO-8, MSOP-10 16 1 Differential 250 (150) 0V– 5V (0V to 3V) 5V (3V) 4.25 (1.22) SPI SO-8, MSOP-8 LTC2308 12 8 Single-Ended/ 4 Differential 500 0V– 4.096V or ±2.048 5V 17.5 SPI QFN-24 (4 x 4) LTC1863 (L) 12 8 Single-Ended/ 4 Differential 200 (175) 0V– 4.096V or ±2.048 (0V – 2.5V or ±1.25V) 5V (3V) 6.5 (2.25) SPI SSOP-16 LTC2309 12 8 Single-Ended/ 4 Differential 14 0V– 4.096V or ±2.048 5V 11.5 I2C QFN-24 (4 x 4) LTC2306 12 2 Single-Ended 500 0V– 5V 5V 14 SPI DFN-10 (3 x 3) LTC1861 (L) 12 2 Single-Ended 250 (150) 0V– 5V (0V to 3V) 5V (3V) 4.25 (2.25) SPI SO-8, MSOP-10 LTC2302 12 1 Differential 500 0V– 5V 5V 14 SPI DFN-10 (3 x 3) LTC1860 (L) 12 1 Differential 250 (150) 0V– 5V (0V– 3V) 5V (3V) 4.25 (1.22) SPI SO-8, MSOP-8 Part No Bits Input Channels LTC1867(L) 16 8 Single-Ended/ 4 Differential LTC1865 (L) 16 LTC1864 (L) (L) Signifies VCC = 3V Sample Rate (ksps) IND U STR IA L SIG N A L CHA I N 15 S OF T S PAN AD C s F OR WID E IN PU T RAN G E APPLIC AT ION S SoftSpan™ ADCs for Wide Input Range Applications LTC1859 16-Bit, 8-Channel ADC with Software Programmable Input Ranges . Sample Rate: 100ksps . 8-Channel Multiplexer with ±25V Protection . Single 5V Supply . Software-Programmable Input Ranges: +15V – COM LT1639 10k + -15V 12V TO 25V . Fixed ±10V Input Range SETRA 206 (LTC1856/LTC1855/LTC1854) . 8 Single-Ended or 4 Differential Inputs . 28-Pin SSOP Package PRESSURE INPUT UP TO 10,000psi RD SCK µP CH2 SDI CONTROL CH3 DGND CH4 SDO CH5 BUSY CH1 0V to 5V, 0V to 10V, ±5V or ±10V (LTC1859/LTC1858/LTC1857) CONVST CH0 LTC1859 CH6 OVDD 3V TO 5V CH7 DVDD 5V MUXOUT+ MUXOUT– AVDD ADC+ ADC– 5V AGND3 10µF 10µF 10µF AGND2 REFCOMP VREF AGND1 SOFTWARE-PROGRAMMABLE SINGLE-ENDED OR DIFFERENTIAL INPUTS (0V TO 5V, 0V TO 10V, ±5V OR ±10V) LINES 1µF 10µF ±10V ADCs (Software-Programmable or Resistor-Selectable) Sample Rate (ksps) Max DNL (LSB) Max INL (LSB) Part No Bits Input Channels Input Span VCC Power (mW) I/O Packages LTC1859 16 8 100 Software-Programmable 0V–5V, 0V–10V, ±5V, or ±10V 5V 40 2 3 Serial SSOP-28 LTC1856 16 8 100 ±10V 5V 40 2 3 Serial SSOP-28 LTC1605 16 1 100 ±10V, ±4V, 0V–4V 5V 55 1 2 Parallel PDIP-28, SSOP-28, SW-28 LTC1606 16 1 250 ±10V 5V 75 1 2 Parallel PDIP-28, SSOP-28, SW-28 LTC1609 16 1 200 0V– 5V, 0V–10V, 0V– 4V, ±10V, ±5V, ±3.3V 5V 65 1 2 Serial SSOP-28, SW-28 LTC1858 14 8 100 Software-Programmable 0V–5V, 0V–10V, ±5V, or ±10V 5V 40 1 1.5 Serial SSOP-28 LTC1855 14 8 100 ±10V 5V 40 1 1.5 Serial SSOP-28 LTC1857 12 8 100 Software-Programmable 0V–5V, 0V–10V, ±5V, or ±10V 5V 40 1 1 Serial SSOP-28 LTC1854 12 8 100 ±10V 5V 40 1 1 Serial SSOP-28 16 IND U STR IA L SIG N A L CHA I N H IG H S PEED D ATA AC QU IS IT ION High Speed ADCs Linear’s high speed ADCs offer the lowest power consumption and highest AC performance in the industry. They incorporate many unique features to ease system design and space constraints, including integrated bypass capacitance and integrated series resistance for 501 digital outputs. The entire high speed ADC portfolio is supported with evaluation boards and a free Quick Eval-II PScope software tool (www.linear.com/company/software.jsp). LTC2209 . Sample Rate: 160Msps . 77.3dBFS Noise Floor . 100dB SFDR . PGA Front End (2.25VP-P or 1.5VP-P Input Range) . 700MHz Full Power Bandwidth S/H . Optional Internal Dither . Optional Data Output Randomizer . LVDS or CMOS Outputs . Single 3.3V Supply . Power Dissipation: 1.45W . 64-Pin (9mm x 9mm QFN Package) LTC2209 Demo Board DC890B USB Interface Board High Speed ADC Snapshot Part No Bits Sample Rate ADCs SNR SFDR Full Power Bandwidth Power Dissipation LTC2209 16 160Msps 1 77.4dB 100dB 700MHz 1450mW LTC2208 16 130Msps 1 77.7dB 100dB 700MHz 1250mW LTC2207 16 105Msps 1 77.9dB 100dB 700MHz 900mW LTC2206 16 80Msps 1 77.9dB 100dB 700MHz 725mW LTC2205 16 65Msps 1 79.0dB 100dB 700MHz 610mW LTC2204 16 40Msps 1 79.1dB 100dB 700MHz 480mW LTC2203 16 25Msps 1 81.6dB 100dB 380MHz 220mW LTC2202 16 10Msps 1 81.6dB 100dB 380MHz 140mW LTC2285 14 125Msps 2 72.4dB 88dB 640MHz 790mW LTC2255 14 125Msps 1 72.4dB 88dB 640MHz 395mW LTC2242-12 12 250Msps 1 65.4dB 78dB 1.2GHz 740mW IND U STR IA L SIG N A L CHA I N 17 H IG H S PEED D ATA AC QU IS IT ION Signal Chain Module The LTM® 9001 signal chain module integrates a high speed ADC, a fixed-gain ADC driver amplifier, the bypass capacitance and the anti-alias filter components. This System in Package (SiP) module is 11.25mm x 11.25mm, which is about half of the board space for the equivalent circuit if done discretely. Demo boards are available today. Contact your local LTC sales engineer. LTM9001-AA Demo Board The LTM9001 Signal Chain Module Incorporates an ADC, Amplifier and Filtering VCC = 3.3V VDD = 3.3V SENSE LTM9001 0VDD = 0.5V TO 3.6V D15 IN RF – ANTI-ALIAS FILTER SAW 16-BIT 130Msps ADC IN+ LO • • • D0 CLKOUT OF DIFFERENTIAL FIXED GAIN AMPLIFIER OGND GND ENC+ ENC– ADC CONTROL PINS CMOS OR LVDS 18 IND U STR IA L SIG N A L CHA I N U LT RA-T IN Y 1 2 -/1 0 -/8 -BIT D AC S / C OMPAC T MIC ROPOWER D AC S Ultra-Tiny 12-/10-/8-Bit DACs with Internal Reference Linear Technology’s DACs work well in a wide variety of open-loop or closed-loop systems, adjusting gain, offset and many other signals. From 8-bit singles to 16-bit octals, serial or parallel I/O, Linear has a DAC to suit your application. LTC2630/LTC2631/LTC2640 . Integrated Precision Reference: 2.5V Full Scale 10ppm/°C (LTC2630-L) 4.096V Full Scale 10ppm/°C (LTC2630-H) . Maximum 12-Bit INL Error: 1LSB . Guaranteed Monotonic Over Temperature . Selectable Internal Reference or Supply as . Low Power Operation: 180µA at 3V, 1.8µA (Max) Shutdown Mode . Guaranteed Operation to 125°C . Power-On Reset to Zero or Midscale Options . Tiny 6-Lead SC70 Package (LTC2630) . Tiny 8-Lead TSOT-23 Packages (LTC2631, LTC2640) Single DACs w/ Internal Reference Reference (LTC2630) . Bidirectional Reference: External Input or 10ppm/°C Output (LTC2631/LTC2640) . SPI Serial Interface (LTC2630/LTC2640) . I2C Serial Interface (LTC2631) . 2.7V to 5.5V Supply Range (LTC2630-L) Single DACs w/ Reference Input/Output Resolution SPI I2C SPI Maximum Ambient Temperature 12-Bit LTC2630-12 LTC2631-12 LTC2640-12 125°C 10-Bit LTC2630-10 LTC2631-10 LTC2640-10 125°C 8-Bit LTC2630-8 LTC2631-8 LTC2640-8 125°C Compact, Micropower DACs for Control Loop Applications . Smallest Pin-Compatible DAC Family: Compact, Micropower DACs for Control Loop Applications Single, Dual, Quad and Octal LTC2600: 16 Bits LTC2610: 14 Bits LTC2620: 12 Bits . Guaranteed 16-Bit Monotonic Over Temperature . Wide 2.5V to 5.5V Supply Range . Low Power Operation . Individual Channel Power-Down to 1µA, Max . Ultralow Crosstalk Between DACs (<10µV) . High Rail-to-Rail Output Drive (±15mA, Min) . Double-Buffered Digital Inputs LTC2601 Demo Board, Single 16-Bit DAC in 3mm x 3mm Package. Demo Board works with QuickEval System. Part No Bits DAC Outputs I/O Packages Power (mW) VCC LTC2600/ LTC2610/ LTC2620 16/14/12 8 SPI SSOP-16 20 2.5V–5.5V LTC2604/ LTC2614/ LTC2624 16/14/12 4 SPI SSOP-16 10 2.5V–5.5V LTC2602/ LTC2612/ LTC2622 16/14/12 2 SPI MSOP-8 6.5 2.5V–5.5V LTC2601/ LTC2611/ LTC2621 16/14/12 1 SPI DFN-10 1.875 2.5V–5.5V LTC2605/ LTC2615/ LTC2625 16/14/12 8 I2C SSOP-16 20 2.7V–5.5V LTC2609/ LTC2619/ LTC2929 16 4 I2C SSOP-16 10 2.7V–5.5V LTC2607/ LTC2617/ LTC2627 16 2 I2C MSOP-8 6.5 2.7V–5.5V LTC2606/ LTC2616/ LTC2626 16 1 I2C DFN-10 1.875 2.7V–5.5V LTC1660/ LTC1665 10/8 8 SPI SSOP-16 1 2.7V–5.5V LTC1664 10 4 SPI SSOP-16 1 2.7V–5.5V LTC1662 10 2 SPI MSOP-8 0.017 2.7V–5.5V TSOT23-5, MSOP-8 0.375 2.7V–5.5V LTC1669 10 1 2 IC IND U STR IA L SIG N A L CHA I N 19 RMS -T O-D C C ON V ERT ERS RMS-to-DC Converters Linear Technology’s simple, true RMS-to-DC converters use an innovative delta-sigma computational technique that features high linearity and accuracy suitable for a wide variety of AC measurement applications. LTC1968 . High Linearity: 0.02% Linearity Allows Simple System Calibration . Wide Input Bandwidth: Bandwidth to 0.1% Additional Gain RMS Noise Measurement VOLTAGE NOISE IN 2.5V 2.5V Error: 40kHz + . No-Hassle Simplicity: True RMS-to-DC Conversion with Only One 100Ω External Capacitor . Low Supply Current: 330µA . Flexible Inputs: Differential or Single Ended . Flexible Output: Rail-to-Rail Output . Small Size: Space-Saving 8-Pin MSOP Package 1k 1/2 LT6203 – –2.5V 100Ω VOUT = V+ IN1 VOUT 1mVDC 1µVRMS OF INPUT NOISE CAVE 10µF LTC1968 IN2 OUT RTN EN GND 100k 0.1µF 1.5µF –2.5V BW 1kHz TO 100kHz INPUT SENSITIVITY = 1µVRMS TYP L I N E A R I TY E R R OR ( V OUT m V DC – V IN m V A C RMS ) Linearity Performance 0.2 LTC1968, ΔΣ 0 -0.2 -0.4 -0.6 CONVENTIONAL LOG/ANTILOG -0.8 LTC1968 Demo Board 60Hz SINEWAVE -1.0 0 100 200 300 400 500 V IN (mV AC RMS ) RMS-to-DC Converters Part No 1% Error Bandwidth (Typ) kHz 3dB Error Bandwidth (Typ) kHz Max Linearity Error (%) Max Conversion Gain Error (%) VS Max (V) ISUPPLY Max 25°C (mA) Package LTC1966 6 800 0.15 0.3 12 0.17 MSOP-8 LTC1967 200 4000 0.15 0.3 6 0.39 MSOP-8 LTC1968 500 15000 0.15 0.3 6 2.3 MSOP-8 20 IND U STR IA L SIG N A L CHA I N PREC IS ION REF EREN C ES Precision References Linear Technology offers a broad line of series and shunt precision voltage references, where some are designed to operate in either shunt or series mode. Linear’s references offer excellent initial accuracy and low drift over time and temperature. LT6650 The LT6650 combines a 400mV reference and a buffer to provide a programmable output voltage. Full-Bridge Load Current Monitor VAUTOMOTIVE 5V R5 900k LT1990 . Low Quiescent Current: 5.6µA (Typ) . Wide Supply Range: 1.4V to 18V . 400mV Reference ±1% Maximum Accuracy R1 1M Over Temperature at 5V –+ . Rail-to-Rail Buffer Amplifier . 0.5% 400mV Maximum Initial RS R6 100k – VOUT + IL R2 1M VREF = 1.5V Accuracy at 5V OUT IN . Shunt Configurable . Sinks and Sources Current . Wide Operational Range –40°C to 125°C . Externally Adjustable Output Voltage . Low Profile 1mm 5-Lead SOT-23 R7 100k LT6650 _ VCM < _ 73V –12 < VOUT = VREF ± (10 • IL • RS) 54.9k R3 40k 1nF FB R10 100k R4 R8 40k 900k R9 100k GND 30k 1µF FOR RS = 1m: VOUT = 0.5V for IL = 100A VOUT = 1.5V for IL = 0A VOUT = 2.5V for IL = –100A (ThinSOT™) Package Selected Precision References Max Accuracy Drift (%) (ppm/°C) Package ISUPPLY* Min Line In/Out RegMax Voltage (V) (ppm/V) 1.25, 2.048, 2.5, 33.3, 4.049, 5 0.05 10 SOT-23-6 60µA 0.1 170 High Precision SOT-23 Reference Series 2.5, 3, 4, 5 0.04 3 SO-8 50µA 0.3 6 Precision LDO with Shutdown LT1460 Series 2.5, 3, 3.3, 5, 10 0.075 10 SO-8, MS-8, 130µA DIP-8, TO-12 0.9 25 Output Capacitor Optional LT1236 Both 5, 10 0.05 5 SO-8, DIP 2.2 6 Tight Tolerance and Low TC LT1634 Shunt 1.25, 2.5, 4.096, 5 0.05 10 MS-8, SO-8 7µA N/A N/A Micropower, Precision Shunt LT1019 Both 2.5, 4, 5, 10 0.05 5 DIP-8, TO-5, SO-8 1mA 1.1 3 High Line Rejection LT6650 Series -18–18 0.5 30 typ SOT-23 11µA 0.1 900 400mV Ref with Rail-to-Rail Amplifier LT6660 Series 2.5, 3, 3.3, 5, 10 0.2 20 DFN 180µA 0.9 800 Micropower Precision Series LTC6652 Series 1.25, 2.048, 2.5, 3, 3.3, 4.096, 5 0.05 5 MS-8 560µA 0.3 50 Precision, Low Drift, Low Noise Part No Series/ Shunt Reference Values (V) LT1790 Series LT1461 1.2mA Comment *Min Operating Current for Series Operation or Max Quiescent for Shunt Operation IND U STR IA L SIG N A L CHA I N 21 S IL IC ON OS C ILLAT ORS Silicon Oscillators Linear Technology’s silicon oscillators generate precisely controlled square wave clock signals. These low power solid-state devices are resistant to shock and vibration, have fast start-up characteristics and offer a wide range of output frequencies that are set by a single resistor, by strapping pins, or through a digital serial interface. They are useful for general system timing as well as for synchronizing switching regulators. LTC6906 . Micropower: 65µA Max at 1MHz . Resistor Programmable: 10kHz to 1MHz . 1% accuracy @ 25°C Micropower Clock Generator NO DECOUPLING CAPACITOR NEEDED LTC6906 Demo Board (1.5% over 0°C to 70°C) . Supply Voltage and Current: LTC6906 2.25V TO 3.6V .10 .3 .1 2V to 5.5V, IS = 25µA at 100kHz . No Decoupling Capacitor Needed . Start-Up Time Under 100µ at 1MHz V+ OUT GND GRD DIV SET 10kHz TO 1MHz RSET 100k TO 1M First Cycle After Power-Up is Accurate . CMOS Output Driver . Low Profile (1mm) SOT-23 Package Silicon Oscillators Part No Program Method Frequency Range Frequency Accuracy Max 25°C Frequency Drift IS Max VS = VMIN (µA) Package Comments LTC1799 Resistor 1kHz–30MHz 1.50% 40ppm/°C 1.1@3MHz SOT-23 General Purpose LTC6900 Resistor 1kHz–20MHz 1.50% 40ppm/°C 0.86@10MHz SOT-23 Low Power LTC6902 Resistor 5kHz–20MHz 1.50% 40ppm/°C 1.8@10MHz MS-10 4 Outputs, Spread Spectrum LTC6903 Serial–SPI 1kHz–68MHz 1.10% 10ppm/°C 3.1@5MHz MS-8 SPI Interface 2 LTC6904 Serial–I C 1kHz–68MHz 1.10% 10ppm/°C 3.1@5MHz MS-8 I²C Interface LTC6905 Resistor 17MHz–170MHz 1.40% 20ppm/°C 5@21MHz SOT-23 High Frequency LTC6905-xxx Fixed 20MHz–133MHz 1.00% 20ppm/°C 15@133MHz SOT-23 No Freq Set Resistor Required LTC6906 Resistor 10KHz – 1MHz 0.50% 50ppm/°C .015@100kHz SOT-23 Micropower LTC6907 Resistor 40KHz–4MHz 0.50% 50ppm/°C .036@400kHz SOT-23 Micropower LTC6908-x Resistor 50kHz–10MHz 1.50% 40ppm/°C 1.6@5MHz SOT-23, DFN-6 2 Outputs, Spread Spectrum LTC6930-x Pin-Set 32.678kHz– 8.192MHz 0.09% 1ppm/°C 0.43@5MHz DFN-8, MS-8 8 Pin-Selectable Frequencies per Device , LTC, LT, LTM and Over-The-Top are registered trademarks and Easy Drive, No Latency, Delta-Sigma, SoftSpan and ThinSOT are trademarks of Linear Technology Corporation. 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