Datasheet LTC2309 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | 8-Channel, 12-Bit SAR ADC with I2C Interface |
| Pages / Page | 26 / 1 — 12-Bit Resolution. Low Power: 1.5mW at 1ksps, 35µW Sleep Mode. 14ksps … |
| File Format / Size | PDF / 1.7 Mb |
| Document Language | English |
12-Bit Resolution. Low Power: 1.5mW at 1ksps, 35µW Sleep Mode. 14ksps Throughput Rate. Low Noise: SNR = 73.4dB
Model Line for this Datasheet
- LTC2309CF#PBF LTC2309CF#PBF LTC2309CF#TRPBF LTC2309CF#TRPBF LTC2309CUF#PBF LTC2309CUF#PBF LTC2309CUF#TRPBF LTC2309CUF#TRPBF LTC2309HF#PBF LTC2309HF#PBF LTC2309HF#TRPBF LTC2309HF#TRPBF LTC2309IF#PBF LTC2309IF#PBF LTC2309IF#TRPBF LTC2309IF#TRPBF LTC2309IUF#PBF LTC2309IUF#PBF LTC2309IUF#TRPBF LTC2309IUF#TRPBF
Text Version of Document
LTC2309 8-Channel, 12-Bit SAR ADC with I2C Interface FeAtuRes DesCRIptIOn n
12-Bit Resolution
The LTC®2309 is a low noise, low power, 8-channel, 12-bit n
Low Power: 1.5mW at 1ksps, 35µW Sleep Mode
successive approximation ADC with an I2C compatible n
14ksps Throughput Rate
serial interface. This ADC includes an internal reference n
Low Noise: SNR = 73.4dB
and a fully differential sample-and-hold circuit to reduce n Guaranteed No Missing Codes common mode noise. The LTC2309 operates from an n Single 5V Supply internal clock to achieve a fast 1.3µs conversion time. n 2-Wire I2C Compatible Serial Interface with Nine The LTC2309 operates from a single 5V supply and Addresses Plus One Global for Synchronization draws just 300µA at a throughput rate of 1ksps. The n Fast Conversion Time: 1.3µs ADC enters nap mode when not converting, reducing n Internal Reference the power dissipation. n Internal 8-Channel Multiplexer n Internal Conversion Clock The LTC2309 is available in both a small 24-pin 4mm × n Unipolar or Bipolar Input Ranges (Software Selectable) 4mm QFN and a 20-pin TSSOP package. The internal 2.5V n Guaranteed Operation from –40°C to 125°C reference and 8-channel multiplexer further reduce PCB (TSSOP Package) board space requirements. n 24-Pin 4mm × 4mm QFN and 20-Pin TSSOP Packages The low power consumption and small size make the AppLICAtIOns LTC2309 ideal for battery-operated and portable applica- tions, while the 2-wire I2C compatible serial interface makes n Industrial Process Control this ADC a good match for space-constrained systems. n Motor Control L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Easy Drive is a trademark of Linear Technology Corporation. All other trademarks are the n Accelerometer Measurements property of their respective owners. n Battery-Operated Instruments n Isolated and/or Remote Data Acquisition n Power Supply Monitoring BLOCK DIAGRAM 5V
Integral Nonlinearity
0.1µF 10µF
vs Output Code
1.00 V 0.75 CH0 DD AD1 CH1 LTC2309 AD0 0.50 CH2 0.25 CH3 ANALOG + SCL ANALOG INPUTS INPUT 12-BIT I2C 0 0V TO 4.096V UNIPOLAR CH4 MUX SAR ADC – PORT SDA INL (LSB) ±2.048V BIPOLAR CH5 –0.25 CH6 –0.50 VREF CH7 INTERNAL 2.2µF –0.75 COM 2.5V REF –1.00 0 1024 2048 3072 4096 OUTPUT CODE REFCOMP 2309 G01 GND 0.1µF 10µF 2309 TA01 2309fd Document Outline Features Description Applications Absolute Maximum Ratings Pin Configuration Order Information CONVERTER AND MULTIPLEXER CHARACTERISTICS ANALOG INPUT DYNAMIC ACCURACY INTERNAL REFERENCE CHARACTERISTICS I2C Inputs and Digital Outputs POWER REQUIREMENTS I2C TIMING CHARACTERISTICS ADC TIMING CHARACTERISTICS Typical Performance Characteristics Pin Functions Functional Block Diagram TIMING DIAGRAM Applications Information Package Description Revision History Typical Application Related Parts
12-Bit Resolution
The LTC®2309 is a low noise, low power, 8-channel, 12-bit n
Low Power: 1.5mW at 1ksps, 35µW Sleep Mode
successive approximation ADC with an I2C compatible n
14ksps Throughput Rate
serial interface. This ADC includes an internal reference n
Low Noise: SNR = 73.4dB
and a fully differential sample-and-hold circuit to reduce n Guaranteed No Missing Codes common mode noise. The LTC2309 operates from an n Single 5V Supply internal clock to achieve a fast 1.3µs conversion time. n 2-Wire I2C Compatible Serial Interface with Nine The LTC2309 operates from a single 5V supply and Addresses Plus One Global for Synchronization draws just 300µA at a throughput rate of 1ksps. The n Fast Conversion Time: 1.3µs ADC enters nap mode when not converting, reducing n Internal Reference the power dissipation. n Internal 8-Channel Multiplexer n Internal Conversion Clock The LTC2309 is available in both a small 24-pin 4mm × n Unipolar or Bipolar Input Ranges (Software Selectable) 4mm QFN and a 20-pin TSSOP package. The internal 2.5V n Guaranteed Operation from –40°C to 125°C reference and 8-channel multiplexer further reduce PCB (TSSOP Package) board space requirements. n 24-Pin 4mm × 4mm QFN and 20-Pin TSSOP Packages The low power consumption and small size make the AppLICAtIOns LTC2309 ideal for battery-operated and portable applica- tions, while the 2-wire I2C compatible serial interface makes n Industrial Process Control this ADC a good match for space-constrained systems. n Motor Control L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Easy Drive is a trademark of Linear Technology Corporation. All other trademarks are the n Accelerometer Measurements property of their respective owners. n Battery-Operated Instruments n Isolated and/or Remote Data Acquisition n Power Supply Monitoring BLOCK DIAGRAM 5V
Integral Nonlinearity
0.1µF 10µF
vs Output Code
1.00 V 0.75 CH0 DD AD1 CH1 LTC2309 AD0 0.50 CH2 0.25 CH3 ANALOG + SCL ANALOG INPUTS INPUT 12-BIT I2C 0 0V TO 4.096V UNIPOLAR CH4 MUX SAR ADC – PORT SDA INL (LSB) ±2.048V BIPOLAR CH5 –0.25 CH6 –0.50 VREF CH7 INTERNAL 2.2µF –0.75 COM 2.5V REF –1.00 0 1024 2048 3072 4096 OUTPUT CODE REFCOMP 2309 G01 GND 0.1µF 10µF 2309 TA01 2309fd Document Outline Features Description Applications Absolute Maximum Ratings Pin Configuration Order Information CONVERTER AND MULTIPLEXER CHARACTERISTICS ANALOG INPUT DYNAMIC ACCURACY INTERNAL REFERENCE CHARACTERISTICS I2C Inputs and Digital Outputs POWER REQUIREMENTS I2C TIMING CHARACTERISTICS ADC TIMING CHARACTERISTICS Typical Performance Characteristics Pin Functions Functional Block Diagram TIMING DIAGRAM Applications Information Package Description Revision History Typical Application Related Parts
