ADS1256IDBR
Analog to Digital Converters (ADC)
Technical Specifications
| Type | Description |
|---|---|
| Maximum Clock Speed | 7.68 MHz |
| Quiescent Current (Iq) | 2uA |
| Integral non - linearity | - |
| Voltage Reference | External |
| Clock/Oscillator | External |
| Resolution(Bits) | 30kHz;24 |
| S/N Ratio | - |
| DNL (LSB) | - |
| Type | Description |
|---|---|
| ADC architecture | Sigma-Delta |
| Programmable Gain | Support |
| Operating Temp | -40°C ~ +105°C |
| Interface | SPI |
| Working Voltage V | 3.467 V |
| Channels | 4.0 |
| Features | Multiplexers;Input buffer;Integrated modulator;Built-in digital filter |
| Package / Case | SSOP-28-208mil |
Product Introduction
The ADS1255 and ADS1256 are extremely low-noise, 24-bit analog-to-digital (A/D) converters. They provide complete high-resolution measurement solutions for the most demanding applications.
The converter is comprised of a 4th-order, delta-sigma (ΔΣ) modulator followed by a programmable digital filter. A flexible input multiplexer handles differential or single-ended signals and includes circuitry to verify the integrity of the external sensor connected to the inputs. The selectable input buffer greatly increases the input impedance and the low-noise programmable gain amplifier (PGA) provides gains from 1 to 64 in binary steps. The programmable filter allows the user to optimize between a resolution of up to 23 bits noise-free and a data rate of up to 30k samples per second (SPS). The converters offer fast channel cycling for measuring multiplexed inputs and can also perform one-shot conversions that settle in just a single cycle.
Communication is handled over an SPI-compatible serial interface that can operate with a 2-wire connection. Onboard calibration supports both self and system correction of offset and gain errors for all the PGA settings. Bidirectional digital I/Os and a programmable clock output driver are provided for general use. The ADS1255 is packaged in an SSOP-20, and the ADS1256 in an SSOP-28.
Features
- 24 Bits, No Missing Codes − All Data Rates and PGA Settings
- Up to 23 Bits Noise-Free Resolution
- ±0.0010% Nonlinearity (max)
- Data Output Rates to 30kSPS
- Fast Channel Cycling − 18.6 Bits Noise-Free (21.3 Effective Bits) at 1.45kHz One-Shot Conversions with Single-Cycle Settling
- Flexible Input Multiplexer with Sensor Detect − Four Differential Inputs (ADS1256 only) Eight Single-Ended Inputs (ADS1256 only)
- Chopper-Stabilized Input Buffer
- Low-Noise PGA: 27nV Input-Referred Noise
- Self and System Calibration for All PGA Settings
- 5V Tolerant SPI-Compatible Serial Interface
- Analog Supply: 5V
- Digital Supply: 1.8V to 3.6V
- Power Dissipation − As Low as 38mW in Normal Mode − 0.4mW in Standby Mode
Applications
- - Scientific Instrumentation - Industrial Process Control - Medical Equipment - Test and Measurement - Weigh Scales
Datasheet
Alternative Parts
Common ADS1256IDBR alternatives overseas buyers search for:
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | ROHS3 |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
Sourcing Information
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