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ADS7883 Datasheet Preview

ADS7883 Datasheet

SAR ANALOG-TO-DIGITAL CONVERTER

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ADS7883
www.ti.com ....................................................................................................................................................................................................... SLAS594 – JULY 2008
12-BIT, 3-MSPS, MICROPOWER, MINIATURE
SAR ANALOG-TO-DIGITAL CONVERTER
FEATURES
1
3-MHz Sample Rate Serial Device
12-Bit Resolution
Zero Latency
48-MHz Serial Interface
Supply Range: 2.7 V to 5.5 V
Low Power Dissipation:
– 6.45 mW at 3-V VDD, 2 MSPS
– 13.5 mw at 5-V VDD, 3 MSPS
±0.6 LSB INL, ±0.5 LSB DNL
72 dB SINAD, –84 dB THD
Unipolar Input Range: 0 V to VDD
Power-Down Current: 1 µA
Wide Input Bandwidth: 30 MHz at 3 dB
6-Pin SOT23 Package
APPLICATIONS
Base Band Converters in Radio
Communication
Motor Current/Bus Voltage Sensors in Digital
Drives
Optical Networking (DWDM, MEMS Based
Switching)
Optical Sensors
Battery Powered Systems
Medical Instrumentations
High-Speed Data Acquisition Systems
High-Speed Closed-Loop Systems
DESCRIPTION
The ADS7883 is a 12-bit, 3-MSPS analog-to-digital converter (ADC). The device includes a capacitor based SAR
A/D converter with inherent sample and hold. The serial interface in the device is controlled by the CS and SCLK
signals for glueless connections with microprocessors and DSPs. The input signal is sampled with the falling
edge of CS, and SCLK is used for conversion and serial data output.
The device operates from a wide supply range from 2.7 V to 5.5 V. The low power consumption of the device
makes it suitable for battery-powered applications. The device also includes a power saving power-down feature
for when the device is operated at lower conversion speeds.
The high level of the digital input to the device is not limited to device VDD. Therefore the digital input can go as
high as 5.5 V when the device supply is 2.7 V. This feature is useful when digital signals are received from
another circuit with different supply levels. This also reduces restrictions on power-up sequencing.
The ADS7883 is available in a 6-pin SOT23 package and is specified for operation from –40°C to 125°C.
BIT
12-Bit
10-Bit
8-Bit
MicroPower Miniature SAR Converter Family
< 300 KSPS
ADS7866 (1.2 VDD to 3.6 VDD)
ADS7867 (1.2 VDD to 3.6 VDD)
ADS7868 (1.2 VDD to 3.6 VDD)
300 KSPS – 1.25 MSPS
ADS7886 (2.35 VDD to 5.25 VDD)
ADS7887 (2.35 VDD to 5.25 VDD)
ADS7888 (2.35 VDD to 5.25 VDD)
3 MSPS
ADS7883 3 MSPS for 4.5 VDD to 5.5 VDD
2 MSPS for 2.7 VDD to 4.5 VDD
ADS7884 (2.7 VDD to 5.5 VDD)
ADS7885 (2.7 VDD to 5.5 VDD)
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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008, Texas Instruments Incorporated




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ADS7883 Datasheet Preview

ADS7883 Datasheet

SAR ANALOG-TO-DIGITAL CONVERTER

No Preview Available !

ADS7883
SLAS594 – JULY 2008 ....................................................................................................................................................................................................... www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
SAR
+IN
VDD
CDAC
COMPARATOR
OUTPUT
LATCHES
&
3−STATE
DRIVERS
SDO
CONVERSION
&
CONTROL
LOGIC
SCLK
CS
PACKAGE/ORDERING INFORMATION(1)
DEVICE
MAXIMUM
INTEGRAL
LINEARITY
(LSB)
MAXIMUM
DIFFERENTIAL
LINEARITY
(LSB)
NO MISSING
CODES AT
RESOLUTION
(BIT)
PACKAGE
TYPE
PACKAGE
DESIGNAT
OR
TEMPERATURE
RANGE
ADS7883SB
±1
±1
ADS7883S
±2
±2
12
6-Pin
SOT23
DBV
–40°C to 125°C
11
PACKAGE
MARKING
7883
7883
7883
7883
ORDERING
INFORMATION
ADS7883SBDBVT
ADS7883SBDBVR
ADS7883SDBVT
ADS7883SDBVR
TRANSPORT
MEDIA
QUANTITY
Small Tape and
Reel 250
Large Tape and
Reel 3000
Small Tape and
Reel 250
Large Tape and
Reel 3000
(1) For most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
ABSOLUTE MAXIMUM RATINGS(1)
+IN to AGND
+VDD to AGND
Digital input voltage to GND
Digital output to GND
Operating temperature range
Storage temperature range
Junction temperature (TJ Max)
Power dissipation, SOT23 package
Thermal impedance, θJA
Lead temperature, soldering
SOT23
Vapor phase (60 sec)
Infrared (15 sec)
UNIT
–0.3 V to +VDD +0.3 V
–0.3 V to 7.0 V
–0.3 V to (7.0 V)
–0.3 V to (+VDD + 0.3 V)
–40°C to 125°C
–65°C to 150°C
150°C
(TJ Max–TA)/θJA
295.2°C/W
215°C
220°C
(1) Stresses above those listed under absolute maximum ratings may cause permanent damage to the device. Exposure to absolute
maximum conditions for extended periods may affect device reliability.
2
Submit Documentation Feedback
Product Folder Link(s): ADS7883
Copyright © 2008, Texas Instruments Incorporated



Part Number ADS7883
Description SAR ANALOG-TO-DIGITAL CONVERTER
Maker etcTI
Total Page 3 Pages
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ADS7883 Datasheet PDF





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