Datasheet LTC1860L, LTC1861L (Analog Devices)
| Manufacturer | Analog Devices |
| Description | µPower, 3V, 12-Bit, 150ksps 1- and 2-Channel ADCs in MSOP |
| Pages / Page | 12 / 1 — FEATURES. DESCRIPTIO. 12-Bit 150ksps ADCs in MSOP Package. APPLICATIO S. … |
| File Format / Size | PDF / 240 Kb |
| Document Language | English |
FEATURES. DESCRIPTIO. 12-Bit 150ksps ADCs in MSOP Package. APPLICATIO S. TYPICAL APPLICATIO. Supply Current vs Sampling Frequency
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Text Version of Document
LTC1860L/LTC1861L µPower, 3V, 12-Bit, 150ksps 1- and 2-Channel ADCs in MSOP
U FEATURES DESCRIPTIO
■
12-Bit 150ksps ADCs in MSOP Package
The LTC®1860L/LTC1861L are 12-bit A/D converters that ■ Single 3V Supply are offered in MSOP and SO-8 packages and operate on a ■ Low Supply Current: 450µA (Typ) single 3V supply. At 150ksps, the supply current is only ■ Auto Shutdown Reduces Supply Current 450µA. The supply current drops at lower speeds because to 10µA at 1ksps the LTC1860L/LTC1861L automatically power down be- ■ True Differential Inputs tween conversions. These 12-bit switched capacitor suc- ■ 1-Channel (LTC1860L) or 2-Channel (LTC1861L) cessive approximation ADCs include sample-and-holds. Versions The LTC1860L has a differential analog input with an ■ SPI/MICROWIRETM Compatible Serial I/O external reference pin. The LTC1861L offers a software- ■ High Speed Upgrade to LTC1285/LTC1288 selectable 2-channel MUX and an external reference pin on ■ Pin Compatible with 16-Bit LTC1864L/LTC1865L the MSOP version. ■ No Minimum Data Transfer Rate
U
The 3-wire, serial I/O, MSOP or SO-8 package and
APPLICATIO S
extremely high sample rate-to-power ratio make these ADCs ideal choices for compact, low power, high speed ■ High Speed Data Acquisition systems. ■ Portable or Compact Instrumentation These ADCs can be used in ratiometric applications or with ■ Low Power Battery-Operated Instrumentation external references. The high impedance analog inputs ■ Isolated and/or Remote Data Acquisition and the ability to operate with reduced spans down to 1V full scale allow direct connection to signal sources in many applications, eliminating the need for external gain stages. , LTC and LT are registered trademarks of Linear Technology Corporation. MICROWIRE is a trademark of National Semiconductor Corporation.
U TYPICAL APPLICATIO Supply Current vs Sampling Frequency Single 3V Supply, 150ksps, 12-Bit Sampling ADC
1000 CONV LOW = 1.5µs TA = 25°C 1µF VCC = 2.7V 3V 100 µA) LTC1860L 10 1 8 VREF VCC 2 7 IN+ SCK ANALOG INPUT 3 6 SERIAL DATA LINK TO SUPPLY CURRENT ( 1 0V TO 3V IN– SDO ASIC, PLD, MPU, DSP 4 5 OR SHIFT REGISTERS GND CONV 1860L TA01 0.1 0.01 0.1 1 10 100 1000 SAMPLING FREQUENCY (kHz) 1860L/61L TA02 18601Lf 1
U FEATURES DESCRIPTIO
■
12-Bit 150ksps ADCs in MSOP Package
The LTC®1860L/LTC1861L are 12-bit A/D converters that ■ Single 3V Supply are offered in MSOP and SO-8 packages and operate on a ■ Low Supply Current: 450µA (Typ) single 3V supply. At 150ksps, the supply current is only ■ Auto Shutdown Reduces Supply Current 450µA. The supply current drops at lower speeds because to 10µA at 1ksps the LTC1860L/LTC1861L automatically power down be- ■ True Differential Inputs tween conversions. These 12-bit switched capacitor suc- ■ 1-Channel (LTC1860L) or 2-Channel (LTC1861L) cessive approximation ADCs include sample-and-holds. Versions The LTC1860L has a differential analog input with an ■ SPI/MICROWIRETM Compatible Serial I/O external reference pin. The LTC1861L offers a software- ■ High Speed Upgrade to LTC1285/LTC1288 selectable 2-channel MUX and an external reference pin on ■ Pin Compatible with 16-Bit LTC1864L/LTC1865L the MSOP version. ■ No Minimum Data Transfer Rate
U
The 3-wire, serial I/O, MSOP or SO-8 package and
APPLICATIO S
extremely high sample rate-to-power ratio make these ADCs ideal choices for compact, low power, high speed ■ High Speed Data Acquisition systems. ■ Portable or Compact Instrumentation These ADCs can be used in ratiometric applications or with ■ Low Power Battery-Operated Instrumentation external references. The high impedance analog inputs ■ Isolated and/or Remote Data Acquisition and the ability to operate with reduced spans down to 1V full scale allow direct connection to signal sources in many applications, eliminating the need for external gain stages. , LTC and LT are registered trademarks of Linear Technology Corporation. MICROWIRE is a trademark of National Semiconductor Corporation.
U TYPICAL APPLICATIO Supply Current vs Sampling Frequency Single 3V Supply, 150ksps, 12-Bit Sampling ADC
1000 CONV LOW = 1.5µs TA = 25°C 1µF VCC = 2.7V 3V 100 µA) LTC1860L 10 1 8 VREF VCC 2 7 IN+ SCK ANALOG INPUT 3 6 SERIAL DATA LINK TO SUPPLY CURRENT ( 1 0V TO 3V IN– SDO ASIC, PLD, MPU, DSP 4 5 OR SHIFT REGISTERS GND CONV 1860L TA01 0.1 0.01 0.1 1 10 100 1000 SAMPLING FREQUENCY (kHz) 1860L/61L TA02 18601Lf 1
