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ADC14161 Schematic ( PDF Datasheet ) - National Semiconductor

Teilenummer ADC14161
Beschreibung Low-Distortion/ Self-Calibrating 14-Bit/ 2.5 MSPS/ 390 mW A/D Converter
Hersteller National Semiconductor
Logo National Semiconductor Logo 




Gesamt 20 Seiten
ADC14161 Datasheet, Funktion
January 2000
ADC14161
Low-Distortion, Self-Calibrating 14-Bit, 2.5 MSPS,
390 mW A/D Converter
General Description
The ADC14161 is a self-calibrating 14-bit, 2.5 Megasample
per second analog to digital converter. It operates on a single
+5V supply, consuming just 390mW (typical).
The ADC14161 provides an easy and affordable upgrade
from 12 bit converters. The ADC14161 may also be used to
replace many hybrid converters with a resultant saving of
space, power and cost.
The ADC14161 operates with input frequencies up to 12 the
clock frequency. The calibration feature of the ADC14161
can be used to get more consistent and repeatable results
over the entire operating temperature range. On-command
self-calibration reduces many of the effects of
temperature-induced drift, resulting in more repeatable con-
versions.
Tested and guaranteed dynamic performance specifications
provide the designer with known performance.
The Power Down feature reduces power consumption to
less than 2mW.
The ADC14161 comes in a TQFP and is designed to operate
over the industrial temperature range of −40˚C to +85˚C.
Features
n Single +5V Operation
n Auto-Calibration
n Power Down Mode
n TTL/CMOS Input/Output compatible
Key Specifications
n Resolution
n Conversion Rate
n DNL
n SNR (fIN = 500 kHz)
n ENOB
n Supply Voltage
n Power Consumption
Applications
n Instrumentation
n PC-Based Data Acquisition
n Data Communications
n Blood Analyzers
n Sonar/Radar
14 Bits
2.5 Msps (min)
0.3 LSB (typ)
80 dB (typ)
12.8 Bits (typ)
+5V ±5%
390mW (typ)
Connection Diagram
Ordering Information
Industrial
(−40˚C TA +85˚C)
ADC14161CIVT
DS100154-1
Package
VEG52A 52 Pin Thin Quad Flat Pack
© 2000 National Semiconductor Corporation DS100154
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ADC14161 Datasheet, Funktion
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (VA, VD, VD I/O)
Voltage on Any I/O Pin
6.5V
−0.3V to V+ +0.3V
Input Current at Any Pin (Note 3)
±25mA
Package Input Current (Note 3)
±50mA
Power Dissipation at TA = 25˚C
ESD Susceptibility (Note 5)
(Note 4)
Human Body Model
1500V
Machine Model
200V
Soldering Temp., Infrared, 10 sec. (Note 6)
300˚C
Storage Temperature
−65˚C to +150˚C
Operating Ratings(Notes 1, 2)
Operating Temperature
Range
VA, VD
VD I/O
VREF − IN
VREF− IN
Digital Inputs
|VA − VD|
|AGND - DGND |
−40˚C TA +85˚C
+4.75V to +5.25V
2.7V to VD
1.0V to 3.0V
AGND to 1.0V
−0.05V to VD + 0.05V
100 mV
0V to 100 mV
Converter Electrical Characteristics
TlPimhDeit=fso+lal5opVwp,ilnyVgRfosEprFe+TcIANific==aTt+ioJ2n.=0sVTa,MpVpINRlyEtoFfoTrIMNAAG=XN:ADaGll=NoDDth,GefrCNLlDiKm==its2DT.G5ANM=DHTzIJ/,O=C=L25=0˚VC5,(0NVpo+Fte=/psVin7A.,
= VD
After
8, 9)
= +5.0V,
Auto-Cal
VD I/O = 3.0V or 5.0V,
@ Temperature. Boldface
Symbol
Parameter
Conditions
Typical
(Note 10)
Limits
(Note 11)
Units
Static Converter Characteristics
Resolution with No
Missing Codes
14 Bits(min)
INL Integral Non Linearity
±0.75
±2.5
LSB(max)
DNL
Differential Non Linearity
±0.3
±1.0
LSB(max)
Full-Scale Error
±0.4
±2.8
% FS(max)
Zero Offset Error
+0.1
±0.6
% FS(max)
Reference and Analog Input Characteristics
VIN
Input Voltage Range
(VIN+ − VIN− )
VREF = VREF+ IN − VREF+ IN
2.0 1.8 V(min)
2.2 V(max)
CIN Input Capacitance
VIN = 1.0V + 0.7Vrms
(CLK
LOW)
(CLK
HIGH)
12
28
pF
pF
VREF
Reference Voltage
Range [( VREF+ IN) −
(VREF IN)] (Note 14)
Reference Input
Resistance
1.8 V(min)
2.00 2.2 V(max)
3.5 K
Dynamic Converter Characteristics
BW Full Power Bandwidth
8 MHz
SNR
SINAD
Signal-to-Noise Ratio
Signal-to-Noise &
Distortion
fIN = 500 kHz, VIN = 1.9VP-P
fIN = 500 kHz, VIN = 1.9VP-P
80 77 dB(min)
79 76 dB(min)
ENOB
THD
Effective Number of Bits
Total Harmonic
Distortion
fIN = 500 kHz, VIN = 1.9VP-P
fIN = 500 kHz, VIN = 1.9VP-P
12.8 12.3 Bits(min)
−88 −80 dB(min)
SFDR
Spurious Free Dynamic
Range
fIN = 500 kHz, VIN = 1.9VP-P
90
dB
IMD Intermodulation
Distortion
fIN1 = 95 kHz
fIN2 = 105 kHz
−97 dB
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ADC14161 pdf, datenblatt
Timing Diagrams (Continued)
TIMING DIAGRAM 2. Reset and Calibration
DS100154-16
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