ADC081S051 Datasheet PDF - National Semiconductor

www.Datasheet-PDF.com

ADC081S051
National Semiconductor

Part Number ADC081S051
Description 8-Bit A/D Converter
Page 13 Pages


ADC081S051 datasheet pdf
Download PDF
ADC081S051 pdf
View PDF for Mobile


No Preview Available !

April 2005
ADC081S051
Single Channel, 500 kSPS, 8-Bit A/D Converter
General Description
The ADC081S051 is a low-power, single channel CMOS
8-bit analog-to-digital converter with a high-speed serial in-
terface. Unlike the conventional practice of specifying per-
formance at a single sample rate only, the ADC081S051 is
fully specified over a sample rate range of 200 kSPS to 500
kSPS. The converter is based on a successive-
approximation register architecture with an internal track-
and-hold circuit.
The output serial data is straight binary, and is compatible
with several standards, such as SPI, QSPI,
MICROWIRE, and many common DSP serial interfaces.
The ADC081S051 operates with a single supply that can
range from +2.7V to +5.25V. Normal power consumption
using a +3V or +5V supply is 2.9 mW and 10.5 mW, respec-
tively. The power-down feature reduces the power consump-
tion to as low as 2.6 µW using a +5V supply.
The ADC081S051 is packaged in an 6-lead LLP package.
Operation over the industrial temperature range of −40˚C to
+85˚C is guaranteed.
Features
n Specified over a range of sample rates.
n 6-lead LLP package
n Variable power management
n Single power supply with 2.7V - 5.25V range
n SPI/QSPI/MICROWIRE/DSP compatible
Key Specifications
n DNL
n INL
n SNR
n Power Consumption
— 3V Supply
— 5V Supply
+ 0.07 / −0.06 LSB (typ)
+ 0.06 / −0.07 LSB (typ)
49.6 dB (typ)
2.9 mW (typ)
10.5 mW (typ)
Applications
n Portable Systems
n Remote Data Aquisitions
n Instrumentation and Control Systems
Pin-Compatible Alternatives by Resolution and Speed
All devices are fully pin and function compatible.
Resolution
Specified for Sample Rate Range of:
50 to 200 kSPS
200 to 500 kSPS
500 kSPS to 1 MSPS
12-bit
ADC121S021
ADC121S051
ADC121S101
10-bit
ADC101S021
ADC101S051
ADC081S101
8-bit
ADC081S021
ADC081S051
ADC081S101
Connection Diagram
Ordering Information
Order Code
ADC081S051CISD
ADC081S051CISDX
Temperature Range
−40˚C to +85˚C
−40˚C to +85˚C
20145505
Description
6-Lead LLP Package
6-Lead LLP Package, Tape & Reel
Top Mark
X6C
X6C
TRI-STATE® is a trademark of National Semiconductor Corporation
QSPIand SPIare trademarks of Motorola, Inc.
© 2005 National Semiconductor Corporation DS201455
www.national.com
Free Datasheet http://www.datasheet4u.com/



No Preview Available !

Block Diagram
20145507
Pin Descriptions and Equivalent Circuits
Pin No.
ANALOG I/O
3
DIGITAL I/O
4
Symbol
VIN
SCLK
5 SDATA
6 CS
POWER SUPPLY
1 VA
2 GND
Description
Analog inputs. This signal can range from 0V to VA.
Digital clock input. This clock directly controls the conversion and readout processes.
Digital data output. The output samples are clocked out of this pin on falling edges of
the SCLK pin.
Chip select. On the falling edge of CS, a conversion process begins.
Positive supply pin. This pin should be connected to a quiet +2.7V to +5.25V source
and bypassed to GND with a 1 µF capacitor and a 0.1 µF monolithic capacitor located
within 1 cm of the power pin.
The ground return for the supply and signals.
www.national.com
2
Free Datasheet http://www.datasheet4u.com/



No Preview Available !

Absolute Maximum Ratings (Notes 1, 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Analog Supply Voltage VA
Voltage on Any Pin to GND
Input Current at Any Pin (Note 3)
Package Input Current (Note 3)
Power Consumption at TA = 25˚C
ESD Susceptibility (Note 5)
Human Body Model
Machine Model
Junction Temperature
Storage Temperature
−0.3V to 6.5V
−0.3V to VA +0.3V
±10 mA
±20 mA
See (Note 4)
3500V
300V
+150˚C
−65˚C to +150˚C
Operating Ratings (Notes 1, 2)
Operating Temperature Range
VA Supply Voltage
Digital Input Pins Voltage Range
Clock Frequency
Sample Rate
Analog Input Voltage
−40˚C TA +85˚C
+2.7V to +5.25V
−0.3V to VA
4 MHz to 10 MHz
up to 500 kSPS
0V to VA
Package Thermal Resistance
Package
6-lead LLP
θJA
78˚C / W
Soldering process must comply with National Semiconduc-
tor’s Reflow Temperature Profile specifications. Refer to
www.national.com/packaging. (Note 6)
ADC081S051 Converter Electrical Characteristics (Note 9)
The following specifications apply for VA = +2.7V to 5.25V, GND = 0V, fSCLK = 4 MHz to 10 MHz,
fSAMPLE = 200 kSPS to 500 kSPS, unless otherwise noted. Boldface limits apply for TA = TMIN to TMAX: all other limits TA =
25˚C.
Symbol
Parameter
STATIC CONVERTER CHARACTERISTICS
Resolution with No Missing Codes
INL Integral Non-Linearity
Conditions
DNL
Differential Non-Linearity
VOFF
GE
Offset Error
Gain Error
TUE
Total Unadjusted Error
DYNAMIC CONVERTER CHARACTERISTICS
SINAD Signal-to-Noise Plus Distortion Ratio
SNR
Signal-to-Noise Ratio
THD
Total Harmonic Distortion
SFDR Spurious-Free Dynamic Range
ENOB
IMD
FPBW
Effective Number of Bits
Intermodulation Distortion, Second
Order Terms
Intermodulation Distortion, Third
Order Terms
-3 dB Full Power Bandwidth
VA = +2.7 to 5.25V
fIN = 100 kHz, −0.02 dBFS
VA = +2.7 to 5.25V
fIN = 100 kHz, −0.02 dBFS
VA = +2.7 to 5.25V
fIN = 100 kHz, −0.02 dBFS
VA = +2.7 to 5.25V
fIN = 100 kHz, −0.02 dBFS
VA = +2.7 to 5.25V
fIN = 100 kHz, −0.02 dBFS
VA = +5.25V
fa = 103.5 kHz, fb = 113.5 kHz
VA = +5.25V
fa = 103.5 kHz, fb = 113.5 kHz
VA = +5V
VA = +3V
Typical
Limits
(Note 9)
Units
+0.06
−0.07
+0.07
−0.06
+0.03
±0.08
+0.8
−0.07
8
+0.3
−0.3
+0.2
−0.2
±0.2
±0.4
+0.2
−0.3
Bits
LSB (max)
LSB (min)
LSB (max)
LSB (min)
LSB (max)
LSB (max)
LSB (max)
LSB (min)
49.6
49
dB (min)
49.6
49
dB (min)
−70 −65 dB (max)
67 65 dB (min)
7.9 7.8 Bits (min)
−68 dB
−68 dB
11 MHz
8 MHz
3 www.national.com
Free Datasheet http://www.datasheet4u.com/



No Preview Available !

ADC081S051 Converter Electrical Characteristics (Note 9) (Continued)
The following specifications apply for VA = +2.7V to 5.25V, GND = 0V, fSCLK = 4 MHz to 10 MHz,
fSAMPLE = 200 kSPS to 500 kSPS, unless otherwise noted. Boldface limits apply for TA = TMIN to TMAX: all other limits TA =
25˚C.
Symbol
Parameter
Conditions
Typical
Limits
(Note 9)
Units
ANALOG INPUT CHARACTERISTICS
VIN
IDCL
CINA
Input Range
DC Leakage Current
Input Capacitance
Track Mode
Hold Mode
0 to VA
30
4
±1
V
µA (max)
pF
pF
DIGITAL INPUT CHARACTERISTICS
VIH Input High Voltage
VIL Input Low Voltage
IIN Input Current
CIND
Digital Input Capacitance
DIGITAL OUTPUT CHARACTERISTICS
VA = +5.25V
VA = +5.25V
VA = +3.6V
VIN = 0V or VA
2.4 V (min)
0.8 V (max)
0.4 V (max)
±0.1 ±1 µA (max)
2 4 pF (max)
VOH
VOL
IOZH,
IOZL
COUT
Output High Voltage
Output Low Voltage
TRI-STATE® Leakage Current
TRI-STATE® Output Capacitance
Output Coding
ISOURCE = 200 µA
ISOURCE = 1 mA
ISINK = 200 µA
ISINK = 1 mA
VA − 0.03
VA − 0.1
0.03
0.1
VA − 0.2
0.4
V (min)
V
V (max)
V
±0.1 ±10 µA (max)
2 4 pF (max)
Straight (Natural) Binary
POWER SUPPLY CHARACTERISTICS (CL = 10 pF)
VA Supply Voltage
2.7
5.25
V (min)
V (max)
Supply Current, Normal Mode
(Operational, CS low)
IA
Supply Current, Shutdown (CS high)
Power Consumption, Normal Mode
(Operational, CS low)
PD Power Consumption, Shutdown (CS
high)
AC ELECTRICAL CHARACTERISTICS
VA = +5.25V,
fSAMPLE = 200 kSPS
VA = +3.6V,
fSAMPLE = 200 kSPS
fSCLK= 0 MHz, VA = +5.25V
fSAMPLE = 0 kSPS
VA = +5.25V, fSCLK = 10MHz,
fSAMPLE = 0 kSPS
VA = +5.25V
VA = +3.6V
fSCLK = 0 MHz, VA = +5.25V
fSAMPLE = 0 kSPS
VA = +5.25V, fSCLK = 10 MHz,
fSAMPLE = 0 kSPS
2.0
0.8
0.5
22
10.5
2.9
2.6
0.12
2.4
1.0
12.6
3.6
mA (max)
mA (max)
µA
µA
mW (max)
mW (max)
µW
mW
fSCLK
Clock Frequency
(Note 8)
4 MHz (min)
10 MHz (max)
fS Sample Rate
(Note 8)
50 200 kSPS (min)
500 kSPS (max)
tCONV
DC
Conversion Time
SCLK Duty Cycle
fSCLK = 10 MHz
16 SCLK cycles
40 % (min)
50
60 % (max)
tACQ
Track/Hold Acquisition Time
Throughput Time
Acquisition Time + Conversion Time
400 ns (max)
20 SCLK cycles
www.national.com
4
Free Datasheet http://www.datasheet4u.com/



ADC081S051 datasheet pdf
Download PDF
ADC081S051 pdf
View PDF for Mobile


Related : Start with ADC081S05 Part Numbers by
ADC081S051 8-Bit A/D Converter ADC081S051
National Semiconductor
ADC081S051 pdf
ADC081S051 Single Channel 200 to 500 ksps 8-Bit A/D Converter (Rev. F) ADC081S051
Texas Instruments
ADC081S051 pdf

Index :   0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z   

This is a individually operated, non profit site. If this site is good enough to show, please introduce this site to others.
Since 2010   ::   HOME   ::   Contact