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ADS1226IRGVT Electronic IC Chip 24 Bit Analog To Digital Converter 2 Input 1 Sigma-Delta 16-VQFN (4x4)

Categories Electronic IC Chip
Model Number: ADS1226IRGVT
Place of Origin: Original
Brand Name: Original Manufacturer
Certification: Rosh
MOQ: 1
Price: Negotiation
Packaging Details: Original Packing
Delivery Time: In stock
Payment Terms: TT, Paypal, Western Union And So On
Supply Ability: 80000
Number of Bits: 24
Sampling Rate (Per Second): 100
Number of Inputs: 2
Input Type: Differential, Single Ended
Data Interface: SPI
Configuration: MUX-ADC
Ratio - S/H:ADC: -
Number of A/D Converters: 1
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ADS1226IRGVT Electronic IC Chip 24 Bit Analog To Digital Converter 2 Input 1 Sigma-Delta 16-VQFN (4x4)


ADS1226IRGVT Electronic IC Chip 24 Bit Analog to Digital Converter 2 Input 1 Sigma-Delta 16-VQFN (4x4)


Number of Bits24
Sampling Rate (Per Second)100
Number of Inputs2
Input TypeDifferential, Single Ended
Data InterfaceSPI
ConfigurationMUX-ADC
Ratio - S/H:ADC-
Number of A/D Converters1
ArchitectureSigma-Delta
Reference TypeExternal
Voltage - Supply, Analog2.7 V ~ 5.5 V
Voltage - Supply, Digital2.7 V ~ 5.5 V
FeaturesTemperature Sensor
Operating Temperature-40°C ~ 105°C
Package / Case16-VQFN Exposed Pad
Supplier Device Package16-VQFN (4x4)
Base Part NumberADS1226

FEATURES DESCRIPTION

· 100SPS Data Rate (High-Speed Mode) The ADS1225 and ADS1226 are 24-bit delta-sigma


· Single-Cycle Settling

· Easy Conversion Control with START Pin

· Automatic Shutdown

analog-to-digital (A/D) converters. They offer excellent performance, ease-of-use, and low power in a small 4mm × 4mm QFN package and are well-suited for demanding high-resolution

· Low Noise: 4mVRMS Noise (High-Resolution measurements, especially in portable and other

Mode) space-saving and power-constrained applications.

· Input Multiplexer with Two Differential The ADS1225 and ADS1226 convert on command

Channels (ADS1226) using a dedicated START pin. Simply pulse this pin to


· Voltage Reference Supports Ratiometric Measurements

· Self-Calibrating

initiate a conversion. Data is read in a single cycle for retrieval over a 2-wire serial interface that easily connects to popular microcontrollers like the MSP430. After the conversion completes, the

· Simple Read-Only 2-Wire Serial Interface ADS1225 and ADS1226 automatically shuts down all


· Internal High-Impedance Input Buffer

· Internal Temperature Sensor

· Internal Oscillator

· Low-Power: 1mW While Operating, < 1mA

circuitry.

Internal features include a two-channel multiplexer (ADS1226), selectable input buffer, temperature sensor, and oscillator. The full-scale range is defined by the external voltage reference with support


During Shutdown provided for up to a 5V differential input signal. Two


· Analog and Digital Supplies: 2.7V to 5.5V

APPLICATIONS

operating modes allow for speed (100SPS data rate, 15mVRMS noise) or resolution (4mVRMS noise, 16SPS data rate).

· Hand-Held Instrumentation The ADS1225/6 supports 2.7 to 5.5V analog and


· Portable Medical Equipment

· Industrial Process Control

digital supplies. Power consumption is 1mW while converting with 3V supplies. The ADS1225 and ADS1226 are fully specified over an extended industrial temperature range of –40°C to +105°C.



PARAMETER


TEST CONDITIONS

ADS1225, ADS1226

UNIT

MINTYPMAX
Analog Input
Full-scale input voltageAINP – AINN±VREFV

Absolute input voltage

Buffer off; AINP, AINN with respect to GNDGND – 0.1AVDD + 0.1V
Buffer on; AINP, AINN with respect to GNDGND + 0.05AVDD – 1.5V

Differential input impedance

Buffer off2MΩ
Buffer on1GΩ
Common-mode input impedanceBuffer off4MΩ
System Performance
Resolution24Bits

Data rate

High-Speed mode75100125SPS(1)
High-Resolution mode121622SPS(1)
Integral nonlinearity (INL)End-point fit0.00050.0020% of FSR(2)
Offset error60200mV
Offset error drift0.3mV/°C
Gain error0.0040.025%
Gain error drift0.3ppm/°C
Common-mode rejectionAt dc8595dB
Analog power-supply rejectionAt dc, ± 10% Δ in AVDD95dB
Digital power-supply rejectionAt dc, DVDD = 2.7V to 5.5V80dB

Noise

High-Speed mode1.5ppm of FSR, rms
High-Resolution mode0.4ppm of FSR, rms
Temperature Sensor
Temperature sensor voltageTA = +25°C106mV
Temperature sensor coefficient360mV/°C
Voltage Reference Input
Reference input voltageVREF = VREFP – VREFN0.5 AVDDV
Negative reference inputGND – 0.1VREFP – 0.5V
Positive reference inputVREFN + 0.5AVDD + 0.1V
Voltage reference impedance1.5MΩ

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