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ADS1194CPAG Datasheet(PDF) 1 Page - Texas Instruments

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Part # ADS1194CPAG
Description  Low-Power, 8-Channel, 16-Bit Analog Front-End for Biopotential Measurements
Download  76 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

ADS1194CPAG Datasheet(HTML) 1 Page - Texas Instruments

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background image
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
ADS1194, ADS1196
ADS1198
www.ti.com
SBAS471C
– APRIL 2010 – REVISED NOVEMBER 2011
Low-Power, 8-Channel, 16-Bit Analog Front-End
for Biopotential Measurements
Check for Samples: ADS1194, ADS1196, ADS1198
With its high levels of integration and exceptional
1
FEATURES
performance, the ADS1194/6/8 family enables the
23
Eight Low-Noise PGAs and
creation of scalable medical instrumentation systems
Eight High-Resolution ADCs (ADS1198)
at significantly reduced size, power, and overall cost.
Low Power: 0.55mW/channel
The ADS1194/6/8 have a flexible input multiplexer
Input-Referred Noise:
per channel that can be independently connected to
12
μVPP (150Hz BW, G = 6)
the internally-generated signals for test, temperature,
and lead-off detection. Additionally, any configuration
Input Bias Current: 200pA
of input channels can be selected for derivation of the
Data Rate: 125SPS to 8kSPS
right leg drive (RLD) output signal. The ADS1194/6/8
CMRR:
–105dB
operate at data rates as high as 8kSPS, thereby
allowing
the
implementation
of
software
pace
Programmable Gain: 1, 2, 3, 4, 6, 8, or 12
detection. Lead-off detection can be implemented
Supports AAMI EC11, EC13, IEC60601-1,
internal to the device, either with a pull-up/pull-down
IEC60601-2-27, and IEC60601-2-51 Standards
resistor or an excitation current sink/source. Three
Supplies: Unipolar or Bipolar
integrated amplifiers generate the Wilson Center
Terminal (WCT) and the Goldberger terminals (GCT)
– Analog: 2.7V to 5.25V
required
for
a
standard
12-lead
medical
– Digital: 1.65V to 3.6V
electrocardiogram (ECG).
Built-In Right Leg Drive Amplifier, Lead-Off
Multiple ADS1194/6/8 devices can be cascaded in
Detection, WCT, Test Signals
high
channel
count
systems
in
a
daisy-chain
Pace Detection Channel Select
configuration.
Built-In Oscillator and Reference
Package options include a tiny 8mm
× 8mm, 64-ball
Flexible Power-Down, Standby Mode
BGA and a TQFP-64. Both packages are specified
SPI
™-Compatible Serial Interface
over the temperature range of 0
°C to +70°C.
Operating Temperature Range:
0
°C to +70°C
APPLICATIONS
Medical Instrumentation (ECG) including:
– Patient monitoring; Holter, event, stress,
and vital signs Including ECG, AED,
Telemedicine
– Evoked audio potential (EAP), Sleep study
monitor
High-Precision, Simultaneous, Multichannel
Signal Acquisition
DESCRIPTION
The ADS1194/6/8 are a family of multichannel,
simultaneous
sampling,
16-bit,
delta-sigma
(
ΔΣ)
analog-to-digital converters (ADCs) with a built-in
programmable
gain
amplifier
(PGA),
internal
reference, and an onboard oscillator.
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
© 2010–2011, 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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