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ADS1258IPHPREP-ADS1258MPHPTEP-ADS1258MRTCTEP
Enhanced Product 16-Channel, 24-Bit Analog-to-Digital Converter
ADS1258 ADS1258-EP
www.ti.com SBAS445D –MARCH 2009–REVISED MARCH 2011
16-CHANNEL, 24-BIT ANALOG-TO-DIGITAL CONVERTER
Checkfor Samples: ADS1258-EP
1FEATURES
23• 24 Bits, No Missing Codes APPLICATIONS Fixed-Channelor Automatic Channel Scan •
Medical, Avionics, and Process Control Fixed-Channel Data Rate: 125 kSPS •
Machine and System Monitoring Auto-Scan Data Rate: 23.7 kSPS/Channel •
Fast Scan Multi-Channel Instrumentation Single-Conversion Settled Data •
Industrial Systems 16 Single-Endedor8 Differential Inputs •
Test and Measurement Systems Unipolar(5V)or Bipolar (±2.5V) Operation SUPPORTS DEFENSE, AEROSPACE,•
Low Noise: 2.8 μVRMS
at 1.8 kSPS AND MEDICAL APPLICATIONS•
0.0003% Integral Nonlinearity •
Controlled Baseline•
DC Stability (typical): •
One Assembly/Test Site0.02 μV/°C
Offset Drift, 0.4 ppm/°C Gain Drift One Fabrication Site•
Open-Sensor Detection •
Availablein Military (–55°C/125°C) and•
Conversion Control Pin Industrial (–40°C/105°C) Temperature Ranges(1)
Multiplexer Output for External Signal •
Extended Product Life CycleConditioning Extended Product-Change Notification•
On-Chip Temperature, Reference, Offset, Gain, •
Product Traceabilityand Supply Voltage Readback 42-mW Power Dissipation Standby, Sleep, and Power-Down Modes 8 General-Purpose Inputs/Outputs (GPIO) 32.768-kHz Crystal Oscillatoror External Clock (1) Custom temperature ranges available
DESCRIPTIONThe ADS1258isa 16-channel (multiplexed), low-noise, 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC)
that provides single-cycle settled dataat channel scan rates from 1.8kto 23.7k samples per second (SPS) per
channel.A flexible input multiplexer accepts combinationsof eight differentialor 16 single-ended inputs withaof5Vor true bipolar rangeof ±2.5V when operating witha 5-V reference. Theis followed bya fifth-order sinc digital filter optimized for low-noise priorto the inputof the ADC. voltage, gain, and offset data. externalor additional
