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ADS7817 Arkusz danych(PDF) 2 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation. Click here to check the latest version.
Numer części ADS7817
Szczegółowy opis  12-Bit Differential Input Micro Power Sampling ANALOG-TO-DIGITAL CONVERTER
Download  15 Pages
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Producent  BURR-BROWN [Burr-Brown (TI)]
Strona internetowa  http://www.burr-brown.com
Logo BURR-BROWN - Burr-Brown (TI)

ADS7817 Arkusz danych(HTML) 2 Page - Burr-Brown (TI)

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®
ADS7817
SPECIFICATIONS
At –40
°C to +85°C, +V
CC = +5V, VREF = +2.5V, fSAMPLE = 200kHz, fCLK = 16 • fSAMPLE, –In = +2.5V, unless otherwise specified.
ADS7817
ADS7817B
ADS7817C
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
ANALOG INPUT
Full-Scale Input Span
+In – (–In)
–VREF
+VREF
TT
TT
V
Absolute Input Voltage
+In
–0.3
VCC +0.3
TT
TT
V
–In
–0.3
4
TT
TT
V
Capacitance
15
TT
pF
Leakage Current
±1
TT
µA
SYSTEM PERFORMANCE
Resolution
12
TT
Bits
No Missing Codes
11
12
T
Bits
Integral Linearity Error
±1
±2
±0.8
±2
±0.5
±1
LSB(1)
Differential Linearity Error
±1
±2
±0.7
±1
±0.4
±1
LSB
Offset Error
±1
±6
TT
TT
LSB
Gain Error
±0.5
±4
TT
TT
LSB
Noise
63
TT
µVrms
Common-Mode Rejection
80
TT
dB
Power Supply Rejection
82
TT
dB
SAMPLING DYNAMICS
Conversion Time
12
TT
Clk Cycles
Acquisition Time
1.5
TT
Clk Cycles
Throughput Rate
200
TT
kHz
DYNAMIC CHARACTERISTICS
Total Harmonic Distortion
VIN = 5.0Vp-p at 1kHz
–83
TT
dB
VIN = 5.0Vp-p at 5kHz
–81
TT
dB
SINAD
VIN = 5.0Vp-p at 1kHz
71
TT
dB
Spurious Free Dynamic Range
VIN = 5.0Vp-p at 1kHz
86
TT
dB
REFERENCE INPUT
Voltage Range
0.1
2.5
TT
TT
V
Resistance
CS = VCC
5
TT
G
CS = GND, fSAMPLE = 0Hz
5
TT
G
Current Drain
At Code FF8h
20
100
TT
TT
µA
fSAMPLE = 12.5kHz
1.3
20
TT
TT
µA
CS = VCC
0.001
3
TT
TT
µA
DIGITAL INPUT/OUTPUT
Logic Family
CMOS
TT
Logic Levels:
VIH
IIH = +5µA3
+VCC +0.3
TT
TT
V
VIL
IIL = +5µA
–0.3
0.8
TT
TT
V
VOH
IOH = –250µA
3.5
TT
V
VOL
IOL = 250µA
0.4
TT
V
Data Format
Binary Two’s Complement
TT
POWER SUPPLY REQUIREMENTS
VCC
Specified Performance
4.75
5.25
TT
TT
V
Quiescent Current
460
800
TT
TT
µA
fSAMPLE = 12.5kHz(2, 3)
40
TT
µA
fSAMPLE = 12.5kHz(3)
330
TT
µA
Power Down
CS =VCC, fSAMPLE = 0Hz
3
TT
µA
TEMPERATURE RANGE
Specified Performance
–40
+85
TT
TT
°C
T Specifications same as ADS7817.
NOTE: (1) LSB means Least Significant Bit, with VREF equal to +2.5V, one LSB is 1.22mV. (2) fCLK = 3.2MHz, CS = VCC for 241 clock cycles out of every 256.
(3) See the Power Dissipation section for more information regarding lower sample rates.
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.


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