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ADS1296IPAG Arkusz danych(PDF) 1 Page - Texas Instruments

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Numer części ADS1296IPAG
Szczegółowy opis  Low-Power, 8-Channel, 24-Bit Analog Front-End for Biopotential Measurements
Download  73 Pages
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Producent  TI [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI - Texas Instruments

ADS1296IPAG Arkusz danych(HTML) 1 Page - Texas Instruments

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Control
Oscillator
SPI
TestSignalsand
Monitors
PACE
RLD
Wilson
Terminal
WCT
Reference
REF
ADC7
ADC8
ADC1
ADC2
ADC3
ADC4
ADC5
ADC6
A7
A8
A1
A2
A3
A4
A5
A6
MUX
¼
¼
¼
ToChannel
RESP
ADS1294
ADS1296
ADS1298
www.ti.com
SBAS459D – JANUARY 2010 – REVISED MAY 2010
Low-Power, 8-Channel, 24-Bit Analog Front-End for Biopotential Measurements
Check for Samples: ADS1294, ADS1296, ADS1298
With its high levels of integration and exceptional
1
FEATURES
performance, the ADS1294/6/8 family enables the
23
Eight Low-Noise PGAs and
creation of scalable medical instrumentation systems
Eight High-Resolution ADCs (ADS1298)
at significantly reduced size, power, and overall cost.
Low Power: 0.75mW/channel
The ADS1294/6/8 have a flexible input multiplexer
Input-Referred Noise: 4mVPP (150Hz BW, G = 6)
per channel that can be independently connected to
Input Bias Current: 200pA
the internally-generated signals for test, temperature,
and lead-off detection. Additionally, any configuration
Data Rate: 250SPS to 32kSPS
of input channels can be selected for derivation of the
CMRR: –115dB
right leg drive (RLD) output signal. The ADS1294/6/8
Programmable Gain: 1, 2, 3, 4, 6, 8, or 12
operate at data rates as high as 32kSPS, thereby
allowing
the
implementation
of
software
pace
Supplies: Unipolar or Bipolar
detection. Lead-off detection can be implemented
Analog: 2.7V to 5.25V
internal to the device, either with a pull-up/pull-down
Digital: 1.65V to 3.6V
resistor or an excitation current sink/source. Three
integrated amplifiers generate the Wilson Central
Built-In Right Leg Drive Amplifier, Lead-Off
Terminal
(WCT)
and
the
Goldberger
Central
Detection, WCT, Test Signals
Terminals (GCT) required for a standard 12-lead
Pace Detection
ECG.
Digital Pace Detection Capability
Multiple ADS1294/6/8 devices can be cascaded in
Built-In Oscillator and Reference
high
channel
count
systems
in
a
daisy-chain
Flexible Power-Down, Standby Mode
configuration.
SPI™-Compatible Serial Interface
Package options include a tiny 8mm × 8mm, 64-ball
Operating Temperature Range: 0°C to +70°C
BGA and a TQFP-64. Both packages are specified
(–40°C to +85°C grade available soon)
from 0°C to +70°C (–40°C to +85°C for TQFP
industrial grade version available soon).
APPLICATIONS
Medical Instrumentation (ECG and EEG)
including:
Patient monitoring; Holter, event, stress,
and vital signs ECG, AED, telemedicine,
fetal ECG
Bispectral index (BIS), Evoked audio
potential (EAP), Sleep study monitor
High-Precision, Simultaneous, Multichannel
Signal Acquisition
DESCRIPTION
The ADS1294/6/8 are a family of multichannel,
simultaneous
sampling,
24-bit,
delta-sigma
(
ΔΣ)
analog-to-digital converters (ADCs) with a built-in
programmable
gain
amplifier
(PGA),
internal
reference,
and
an
onboard
oscillator.
The
ADS1294/6/8 incorporate all of the features that are
commonly required in medical electrocardiogram
(ECG) and electroencephalogram (EEG) applications.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
SPI is a trademark of Motorola.
3
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2010, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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