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Teilenummer | ADC14161 |
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Beschreibung | Low-Distortion/ Self-Calibrating 14-Bit/ 2.5 MSPS/ 390 mW A/D Converter | |
Hersteller | National Semiconductor | |
Logo | ||
Gesamt 20 Seiten 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 1⁄2 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
www.national.com
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,MpVpINRlyEtoFfo−TrIMNAAG=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 KΩ
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
www.national.com
6
6 Page Timing Diagrams (Continued)
TIMING DIAGRAM 2. Reset and Calibration
DS100154-16
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12
12 Page | ||
Seiten | Gesamt 20 Seiten | |
PDF Download | [ ADC14161 Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
ADC14161 | Low-Distortion/ Self-Calibrating 14-Bit/ 2.5 MSPS/ 390 mW A/D Converter | National Semiconductor |
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ADC14161CIVT | Low-Distortion/ Self-Calibrating 14-Bit/ 2.5 MSPS/ 390 mW A/D Converter | National Semiconductor |
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