Datasheet LTC2400 (Analog Devices)
| Hersteller | Analog Devices |
| Beschreibung | 24-Bit µPower No Latency ∆Σ™ ADC in SO-8 |
| Seiten / Seite | 40 / 1 — FEATURES. DESCRIPTIO. 4ppm INL, No Missing Codes. 4ppm Full-Scale Error. … |
| Dateiformat / Größe | PDF / 481 Kb |
| Dokumentensprache | Englisch |
FEATURES. DESCRIPTIO. 4ppm INL, No Missing Codes. 4ppm Full-Scale Error. Single Conversion Settling Time
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LTC2400 24-Bit µPower No Latency ∆ΣTM ADC in SO-8
U FEATURES DESCRIPTIO
■ 24-Bit ADC in SO-8 Package The LTC®2400 is a 2.7V to 5.5V micropower 24-bit ■
4ppm INL, No Missing Codes
converter with an integrated oscillator, 4ppm INL and ■
4ppm Full-Scale Error
0.3ppm RMS noise. It uses delta-sigma technology and ■
Single Conversion Settling Time
provides single cycle settling time for multiplexed appli-
for Multiplexed Applications
cations. Through a single pin the LTC2400 can be config- ■
0.5ppm Offset
ured for better than 110dB rejection at 50Hz or 60Hz ±2%, ■
0.3ppm Noise
or it can be driven by an external oscillator for a user ■ Internal Oscillator—No External Components defined rejection frequency in the range 1Hz to 120Hz. Required The internal oscillator requires no external frequency ■ 110dB Min, 50Hz/60Hz Notch Filter setting components. ■ Reference Input Voltage: 0.1V to VCC The converter accepts any external reference voltage from ■ Live Zero—Extended Input Range Accommodates 0.1V to V 12.5% Overrange and Underrange CC. With its extended input conversion range of –12.5% VREF to 112.5% VREF, the LTC2400 smoothly ■ Single Supply 2.7V to 5.5V Operation resolves the offset and overrange problems of preceding ■ Low Supply Current (200µA) and Auto Shutdown sensors or signal conditioning circuits.
U APPLICATIO S
The LTC2400 communicates through a flexible 3-wire digital interface which is compatible with SPI and ■ Weight Scales MICROWIRETM protocols. ■ Direct Temperature Measurement , LTC and LT are registered trademarks of Linear Technology Corporation. ■ Gas Analyzers No Latency ∆Σ is a trademark of Linear Technology Corporation. MICROWIRE is a trademark of National Semiconductor Corporation. ■ Strain-Gage Transducers ■ Instrumentation ■ Data Acquisition ■ Industrial Process Control ■ 6-Digit DVMs
U TYPICAL APPLICATIO Total Unadjusted Error vs Output Code
10 2.7V TO 5.5V VCC = 5V 8 VREF = 5V 1µF VCC= INTERNAL OSC/50Hz REJECTION 6 TA = 25°C F V = EXTERNAL CLOCK SOURCE O = LOW CC FO = INTERNAL OSC/60Hz REJECTION 4 LTC2400 2 REFERENCE 0 VOLTAGE VREF SCK 0.1V TO V –2 CC 3-WIRE –4 ANALOG SPI INTERFACE LINEARITY ERROR (ppm) INPUT RANGE VIN SDO –6 –0.12VREF TO 1.12VREF GND CS –8 2400 TA01 –10 0 8,338,608 16,777,215 OUTPUT CODE (DECIMAL) 2400 TA02 1
U FEATURES DESCRIPTIO
■ 24-Bit ADC in SO-8 Package The LTC®2400 is a 2.7V to 5.5V micropower 24-bit ■
4ppm INL, No Missing Codes
converter with an integrated oscillator, 4ppm INL and ■
4ppm Full-Scale Error
0.3ppm RMS noise. It uses delta-sigma technology and ■
Single Conversion Settling Time
provides single cycle settling time for multiplexed appli-
for Multiplexed Applications
cations. Through a single pin the LTC2400 can be config- ■
0.5ppm Offset
ured for better than 110dB rejection at 50Hz or 60Hz ±2%, ■
0.3ppm Noise
or it can be driven by an external oscillator for a user ■ Internal Oscillator—No External Components defined rejection frequency in the range 1Hz to 120Hz. Required The internal oscillator requires no external frequency ■ 110dB Min, 50Hz/60Hz Notch Filter setting components. ■ Reference Input Voltage: 0.1V to VCC The converter accepts any external reference voltage from ■ Live Zero—Extended Input Range Accommodates 0.1V to V 12.5% Overrange and Underrange CC. With its extended input conversion range of –12.5% VREF to 112.5% VREF, the LTC2400 smoothly ■ Single Supply 2.7V to 5.5V Operation resolves the offset and overrange problems of preceding ■ Low Supply Current (200µA) and Auto Shutdown sensors or signal conditioning circuits.
U APPLICATIO S
The LTC2400 communicates through a flexible 3-wire digital interface which is compatible with SPI and ■ Weight Scales MICROWIRETM protocols. ■ Direct Temperature Measurement , LTC and LT are registered trademarks of Linear Technology Corporation. ■ Gas Analyzers No Latency ∆Σ is a trademark of Linear Technology Corporation. MICROWIRE is a trademark of National Semiconductor Corporation. ■ Strain-Gage Transducers ■ Instrumentation ■ Data Acquisition ■ Industrial Process Control ■ 6-Digit DVMs
U TYPICAL APPLICATIO Total Unadjusted Error vs Output Code
10 2.7V TO 5.5V VCC = 5V 8 VREF = 5V 1µF VCC= INTERNAL OSC/50Hz REJECTION 6 TA = 25°C F V = EXTERNAL CLOCK SOURCE O = LOW CC FO = INTERNAL OSC/60Hz REJECTION 4 LTC2400 2 REFERENCE 0 VOLTAGE VREF SCK 0.1V TO V –2 CC 3-WIRE –4 ANALOG SPI INTERFACE LINEARITY ERROR (ppm) INPUT RANGE VIN SDO –6 –0.12VREF TO 1.12VREF GND CS –8 2400 TA01 –10 0 8,338,608 16,777,215 OUTPUT CODE (DECIMAL) 2400 TA02 1