ADS1294CZXGT Texas Instruments - Data & Signal Conversion

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ADS1294CZXGT

4-Channel 24-Bit ADC With Integrated ECG Front End

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Series Information for ADS1294CZXGT - Texas Instruments

Features

Built-In Oscillator and Reference
Built-In Right Leg Drive Amplifier, Lead-Off Detection, Wilson Center Terminal, Pace Detection, Test Signals
CMRR: u2013115 dB
Data Rate: 250 SPS to 32 kSPS
Digital Pace Detection Capability
Eight Low-Noise PGAs and Eight High-Resolution ADCs (ADS1298, ADS1298R)
Input Bias Current: 200 pA
Input-Referred Noise: 4 u03bcVPP (150 Hz BW, G = 6)
Integrated Respiration Impedance Measurement
Low Power: 0.75 mW/channel
Programmable Gain: 1, 2, 3, 4, 6, 8, or 12
SPIu2122-Compatible Serial Interface
Supports systems meeting AAMI EC11, EC13, IEC60601-1, IEC60601-2-27, and IEC60601-2-51 Standards
Unipolar or Bipolar Supplies: u2013 AVDD = 2.7 V to 5.25 V u2013 DVDD = 1.65 V to 3.6 V

ROHS Compliant

Datasheet

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Description

AFE 24BIT 32KSPS 4CH 64NFBGA

The ADS1294, ADS1296, ADS1298 (ADS129x) and ADS1294R, ADS1296R ADS1298R (ADS129xR) are a family of multichannel, simultaneous sampling, 24-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with built-in programmable gain amplifiers (PGAs), internal reference, and an onboard oscillator. The ADS129x and ADS129xR incorporate all of the features that are commonly required in medical electrocardiogram (ECG) and electroencephalogram (EEG) applications. With high levels of integration and exceptional performance, the ADS129x and ADS129xR enables the development of scalable medical instrumentation systems at significantly reduced size, power, and overall cost. The ADS129x and ADS129xR have a flexible input multiplexer (mux) per channel that can be independently connected to the internally-generated signals for test, temperature, and lead-off detection. Additionally, any configuration of input channels can be selected for derivation of the right leg drive (RLD) output signal. The ADS129x and ADS129xR operate at data rates as high as 32 kSPS, thereby allowing the implementation of software pace detection. Leadoff detection can be implemented internal to the device, either with a pullup or pulldown resistor, or an excitation current sink or source. Three integrated amplifiers generate the Wilson central terminal (WCT) and the Goldberger central terminals (GCT) required for a standard 12-lead ECG. The ADS129xR versions include a fully integrated, respiration impedance measurement function. Multiple ADS129x and ADS129xR devices can be cascaded in high channel count systems in a daisy-chain configuration. Package options include a tiny 8-mm × 8-mm, 64-ball BGA, and a TQFP-64. The ADS129x BGA version is specified over the commercial temperature range of 0°C to 70°C. The ADS129xR BGA and ADS129x TQFP versions are specified over the industrial temperature range of –40°C to +85°C.

Specifications

Resolution (Bits):

24bit

Sampling Rate:

32kSPS

Input Channel Type:

Differential

Data Interface:

Serial SPI

Supply Voltage Type:

Single

Supply Voltage Min:

2.7V

Supply Voltage Max:

5.25V

ADC / DAC Case Style:

NFBGA

No. of Pins:

64Pins

Operating Temperature Min:

0°C

Operating Temperature Max:

70°C

Product Range:

Quad 24-Bit Sigma-Delta ADCs

Automotive Qualification Standard:

RoHS Phthalates Compliant:

Yes

MSL:

MSL 3 - 168 hours

SVHC:

No SVHC (27-Jun-2018)

No. of Channels:

4Channels

Operating Temperature Range:

0°C to +70°C

Supply Current:

3.1mA

Supply Voltage Range:

2.7V to 5.25V

Supply Voltage Range - Analogue:

2.7V to 5.25V

Supply Voltage Range - Digital:

1.65V to 3.6V

Alternate Descriptions

Avnet America

AFE General Purpose 4ADC 24-Bit 1.8V/3V 64-Pin NFBGA T/R

Avnet Europe

AFE General Purpose 4ADC 24-Bit 1.8V/3V 64-Pin NFBGA T/R

Texas Instruments

4-Channel 24-Bit ADC With Integrated ECG Front End

ADS1294CZXGT

Semiconductors - ICs

> Data & Signal Conversion

> Analog-to-Digital Converters - ADC

Features

Description

Specifications

Alternate Descriptions