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ADS7811 PDF даташит

Спецификация ADS7811 изготовлена ​​​​«Burr-Brown Corporation» и имеет функцию, называемую «16-Bit 250kHz Sampling CMOS ANALOG-to-DIGITAL CONVERTER».

Детали детали

Номер произв ADS7811
Описание 16-Bit 250kHz Sampling CMOS ANALOG-to-DIGITAL CONVERTER
Производители Burr-Brown Corporation
логотип Burr-Brown Corporation логотип 

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ADS7811 Даташит, Описание, Даташиты
®
ADS7811
ADS7811
16-Bit 250kHz Sampling CMOS
ANALOG-to-DIGITAL CONVERTER
FEATURES
q 250kHz SAMPLING RATE
q COMPLETE WITH S/H, REF, CLOCK, ETC.
q 96dB min SFDR WITH 100kHz INPUT
q 84dB min SINAD
q ±2.5V INPUT RANGE
q 28-LEAD SOIC
APPLICATIONS
q WIRELESS BASE STATIONS
q SPECTRUM ANALYSIS
q IMAGING SYSTEMS
q DATA ACQUISITION
DESCRIPTION
The ADS7811 is a complete 16-bit sampling analog-
to-digital (A/D) converter featuring excellent AC
performance and a 250kHz throughput rate. The de-
sign includes a 16-bit capacitor-based SAR A/D
converter with an inherent sample and hold (S/H), a
precision reference, and an internal clock. Spurious-
free dynamic range with a 100kHz full-scale sinewave
input is typically greater than 100dB. The ±2.5V input
range allows development of precision systems using
only ±5V supplies. The converter is available in a
28-lead SOIC package specified for operation over
the industrial –25°C to +85°C temperature range.
±2.5V Input
REF Out/In
Clock
Successive Approximation Register and Control Logic
CDAC
Buffer
5k
Internal
+2.5V Ref
Comparator
Output
Latches
and
Three
State
Drivers
R/C
CS
BUSY
Parallel
Data
Bus
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©1997 Burr-Brown Corporation
PDS-1300A
ADS7811Printed in U.S.A. November, 1997
®









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ADS7811 Даташит, Описание, Даташиты
SPECIFICATIONS
At TA = –25°C to +85°C, fS = 250kHz, +VS = +5V, and –VS = –5V, using internal reference, unless otherwise specified.
ADS7811U
PARAMETER
RESOLUTION
ANALOG INPUT
Voltage Range
Impedance
Capacitance
THROUGHPUT SPEED
Conversion Cycle
Throughput Rate
DC ACCURACY
Integral Linearity Error
No Missing Codes
Transition Noise(2)
Full Scale Error(3)
Full Scale Error Drift
Full Scale Error(3)
Full Scale Error Drift
Bipolar Zero Error
Bipolar Zero Error Drift
Power Supply Sensitivity
AC ACCURACY
Spurious-Free Dynamic Range
Total Harmonic Distortion
Signal-to-(Noise+Distortion)
Signal-to-Noise
Usable Bandwidth(5)
Aperture Delay
REFERENCE
Internal Reference Voltage
Internal Reference Source Current
Internal Reference Drift
External Reference Voltage Range
External Reference Current Drain
DIGITAL INPUTS
Logic Levels
VIL
VIH
IIL
IIH
DIGITAL OUTPUTS
Data Format
Data Coding
VOL
VOH
Leakage Current
Output Capacitance
DIGITAL TIMING
Bus Access Time
Bus Relinquish Time
POWER SUPPLIES
+VS
–VS
+IS
–IS
Power Dissipation
TEMPERATURE RANGE
Specified Performance
Storage
CONDITIONS
After Input Capacitor is Charged
Acquire and Convert
External 2.5000V Reference
External 2.5000V Reference
+VS ±5%, –VS ±5%
fIN = 100kHz
fIN = 100kHz
fIN = 100kHz
–60dB Input
fIN = 100kHz
VREF = +2.5V
ISINK = 1.6mA
ISOURCE = 200µA
High-Z State,
VOUT = 0V to VDIG
High-Z State
MIN
250
15
96
84
84
2.48
TYP
±2.5V
100
30
0.8
±7
±0.2
2
±2
±6
100
–98
87
28
87
1
40
2.5
1
15
2.5
MAX
16
4.0
±4
±0.5
±10
±16
–96
2.52
100
–0.3
+2.8
+0.8
+VS +0.3V
±10
±10
Parallel 16 bits
Binary Two’s Complement
+0.4
+4
±5
15
83
83
+4.75
–5.25
+5 +5.25
–5 –4.75
+30
–10
200 250
–25 +85
–55 +125
UNITS
Bits
V
M
pF
µs
kHz
LSB(1)
Bits
LSB
%
ppm/°C
%
ppm/°C
mV
ppm/°C
LSB
dB(4)
dB
dB
dB
dB
MHz
ns
V
µA
ppm/°C
V
µA
V
V
µA
µA
V
V
µA
pF
ns
ns
V
V
mA
mA
mW
°C
°C
NOTES: (1) LSB means Least Significant Bit. For the 16-bit, ±2.5V input ADS7811, one LSB is 76µV. (2) Typical rms noise at worst case transitions and
temperatures. (3) Full scale error is the worst case of –Full Scale or +Full Scale untrimmed deviation from ideal first and last code transitions, divided by the transition
voltage (not divided by the full-scale range) and includes the effect of offset error. (4) All specifications in dB are referred to a full-scale ±2.5V input. (5) Usable
Bandwidth defined as Full-Scale input frequency at which Signal-to-(Noise+Distortion) degrades to 60dB, or 10 bits of accuracy.
®
ADS7811
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ADS7811 Даташит, Описание, Даташиты
ABSOLUTE MAXIMUM RATINGS
Analog Inputs: VIN .............................................. –VS – 0.3V to +VS + 0.3V
REF ................................................... – 0.3V to +VS + 0.3V
CAP ............................................... Indefinite Short to GND
Momentary Short to +VS
+VS ......................................................................................................... 7V
–VS ...................................................................................................... –7V
Digital Inputs .............................................................. –0.3V to +VS + 0.3V
Maximum Junction Temperature ................................................... +165°C
Internal Power Dissipation ............................................................. 825mW
Lead Temperature (soldering, 10s) ................................................ +300°C
PACKAGE/ORDERING INFORMATION
PRODUCT
PACKAGE
PACKAGE
DRAWING TEMPERATURE
NUMBER(1)
RANGE
ADS7811U
28-Pin SOIC
217 –25°C to +85°C
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix C of Burr-Brown IC Data Book.
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may
be more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN
assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject
to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not
authorize or warrant any BURR-BROWN product for use in life support devices and/or systems.
®
3 ADS7811










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