Datasheet LTC2488 (Analog Devices) - 30
| Manufacturer | Analog Devices |
| Description | 16-Bit 2-/4-Channel ΔΣ ADC with Easy Drive Input Current Cancellation |
| Pages / Page | 30 / 30 — TYPICAL APPLICATION. Figure 29. Easy Drive ADCs Simplify Measurement of … |
| File Format / Size | PDF / 399 Kb |
| Document Language | English |
TYPICAL APPLICATION. Figure 29. Easy Drive ADCs Simplify Measurement of High Impedance Sensors. RELATED PARTS. PART NUMBER
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Text Version of Document
LTC2488
TYPICAL APPLICATION
5V 5V R1 12 1 = EXTERNAL OSCILLATOR 51.1k VCC FO = INTERNAL OSCILLATOR 10µF C4 + LTC2492 IIN = 0 0.1µF R3 13 2 10k TO 100k REF+ SDI 14 3 0.1µF REF– SCK 3-WIRE C3 R4 I – IN = 0 SPI INTERFACE 0.1µF 51.1k 8 CH0 5 SDO 5V 9 CH1 10 4 102k 5V CH2 CS 11 CH3 + 1k 7 6 0.1µF COM GND LT1494 10k TO 100k 2488 F29 – 0.1µF 1k 0.1µF
Figure 29. Easy Drive ADCs Simplify Measurement of High Impedance Sensors RELATED PARTS PART NUMBER DESCRIPTION COMMENTS
LT1236A-5 Precision Bandgap Reference, 5V 0.05% Max Initial Accuracy, 5ppm/°C Drift LT1460 Micropower Series Reference 0.075% Max Initial Accuracy, 10ppm/°C Max Drift LT1790 Micropower SOT-23 Low Dropout Reference Family 0.05% Max Initial Accuracy, 10ppm/°C Max Drift LTC2400 24-Bit, No Latency ΔS ADC in SO-8 0.3ppm Noise, 4ppm INL, 10ppm Total Unadjusted Error, 200µA LTC2410 24-Bit, No Latency ΔS ADC with Differential Inputs 0.8µVRMS Noise, 2ppm INL LTC2411/LTC2411-1 24-Bit, No Latency ΔS ADCs with Differential Inputs in MSOP 1.45µVRMS Noise, 2ppm INL, Simultaneous 50Hz/60Hz Rejection (LTC2411-1) LTC2413 24-Bit, No Latency ΔS ADC with Differential Inputs Simultaneous 50Hz/60Hz Rejection, 800nVRMS Noise LTC2440 High Speed, Low Noise 24-Bit ΔS ADC 3.5kHz Output Rate, 200nVRMS Noise, 24.6 ENOBs LTC2442 24-Bit, High Speed, 4-Channel/2-Channel ΔS ADC with Integrated 8kHz Output Rate, 220nVRMS Noise, Simultaneous 50Hz/60Hz Amplifier Rejection LTC2449 24-Bit, High Speed, 8-Channel/16-Channel ΔS ADC 8kHz Output Rate, 200nVRMS Noise, Simultaneous 50Hz/60Hz Rejection LTC2480/LTC2482/ 16-Bit/24-Bit ΔS ADCs with Easy Drive Inputs, 600nVRMS Noise, Pin Compatible with 16-Bit and 24-Bit Versions LTC2484 Programmable Gain, and Temperature Sensor LTC2481/LTC2483/ 16-Bit/24-Bit ΔS ADCs with Easy Drive Inputs, 600nVRMS Noise, Pin Compatible with 16-Bit and 24-Bit Versions LTC2485 I2C Interface, Programmable Gain, and Temperature Sensor LTC2492 2-Channel, 14-Channel 24-Bit ΔS ADC with Easy Drive Inputs and Pin Compatible with LTC2488 Temperature Sensor LTC2496/LTC2498 16-Channel/8-Channel 16-Bit/24-Bit ΔS ADC with Easy Drive Timing Compatible with LTC2492 Inputs and SPI Interface LTC2449 High Speed 16 Input, ΔS ADC 8kHz Output Rate, Variable Speed Resolution 2488fb 30 LT 1114 REV B • PRINTED IN USA Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95Fo 0 r3 m 5- o7re 4 in 17formation www.linear.com/LTC2488 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com/LTC2488 LINEAR TECHNOLOGY CORPORATION 2006
TYPICAL APPLICATION
5V 5V R1 12 1 = EXTERNAL OSCILLATOR 51.1k VCC FO = INTERNAL OSCILLATOR 10µF C4 + LTC2492 IIN = 0 0.1µF R3 13 2 10k TO 100k REF+ SDI 14 3 0.1µF REF– SCK 3-WIRE C3 R4 I – IN = 0 SPI INTERFACE 0.1µF 51.1k 8 CH0 5 SDO 5V 9 CH1 10 4 102k 5V CH2 CS 11 CH3 + 1k 7 6 0.1µF COM GND LT1494 10k TO 100k 2488 F29 – 0.1µF 1k 0.1µF
Figure 29. Easy Drive ADCs Simplify Measurement of High Impedance Sensors RELATED PARTS PART NUMBER DESCRIPTION COMMENTS
LT1236A-5 Precision Bandgap Reference, 5V 0.05% Max Initial Accuracy, 5ppm/°C Drift LT1460 Micropower Series Reference 0.075% Max Initial Accuracy, 10ppm/°C Max Drift LT1790 Micropower SOT-23 Low Dropout Reference Family 0.05% Max Initial Accuracy, 10ppm/°C Max Drift LTC2400 24-Bit, No Latency ΔS ADC in SO-8 0.3ppm Noise, 4ppm INL, 10ppm Total Unadjusted Error, 200µA LTC2410 24-Bit, No Latency ΔS ADC with Differential Inputs 0.8µVRMS Noise, 2ppm INL LTC2411/LTC2411-1 24-Bit, No Latency ΔS ADCs with Differential Inputs in MSOP 1.45µVRMS Noise, 2ppm INL, Simultaneous 50Hz/60Hz Rejection (LTC2411-1) LTC2413 24-Bit, No Latency ΔS ADC with Differential Inputs Simultaneous 50Hz/60Hz Rejection, 800nVRMS Noise LTC2440 High Speed, Low Noise 24-Bit ΔS ADC 3.5kHz Output Rate, 200nVRMS Noise, 24.6 ENOBs LTC2442 24-Bit, High Speed, 4-Channel/2-Channel ΔS ADC with Integrated 8kHz Output Rate, 220nVRMS Noise, Simultaneous 50Hz/60Hz Amplifier Rejection LTC2449 24-Bit, High Speed, 8-Channel/16-Channel ΔS ADC 8kHz Output Rate, 200nVRMS Noise, Simultaneous 50Hz/60Hz Rejection LTC2480/LTC2482/ 16-Bit/24-Bit ΔS ADCs with Easy Drive Inputs, 600nVRMS Noise, Pin Compatible with 16-Bit and 24-Bit Versions LTC2484 Programmable Gain, and Temperature Sensor LTC2481/LTC2483/ 16-Bit/24-Bit ΔS ADCs with Easy Drive Inputs, 600nVRMS Noise, Pin Compatible with 16-Bit and 24-Bit Versions LTC2485 I2C Interface, Programmable Gain, and Temperature Sensor LTC2492 2-Channel, 14-Channel 24-Bit ΔS ADC with Easy Drive Inputs and Pin Compatible with LTC2488 Temperature Sensor LTC2496/LTC2498 16-Channel/8-Channel 16-Bit/24-Bit ΔS ADC with Easy Drive Timing Compatible with LTC2492 Inputs and SPI Interface LTC2449 High Speed 16 Input, ΔS ADC 8kHz Output Rate, Variable Speed Resolution 2488fb 30 LT 1114 REV B • PRINTED IN USA Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95Fo 0 r3 m 5- o7re 4 in 17formation www.linear.com/LTC2488 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com/LTC2488 LINEAR TECHNOLOGY CORPORATION 2006
