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Burr-Brown Corporation

ADS801 Datasheet Preview

ADS801 Datasheet

12-Bit/ 25MHz Sampling ANALOG-TO-DIGITAL CONVERTER

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®
ADS801U
ADS801E
ADS801
TM 12-Bit, 25MHz Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q NO MISSING CODES
q LOW POWER: 270mW
q INTERNAL REFERENCE
q WIDEBAND TRACK/HOLD: 65MHz
q SINGLE +5V SUPPLY
q PACKAGE: 28-Lead SOIC and
28-Lead SSOP
APPLICATIONS
q IF AND BASEBAND DIGITIZATION
q DIGITAL COMMUNICATIONS
q TEST INSTRUMENTATION
q CCD IMAGING
Copiers
Scanners
Cameras
q VIDEO DIGITIZING
q GAMMA CAMERAS
DESCRIPTION
The ADS801 is a low power, monolithic 12-bit, 25MHz
analog-to-digital converter utilizing a small geometry
CMOS process. This COMPLETE converter includes
a 12-bit quantizer, wideband track/hold, reference, and
three-state outputs. It operates from a single +5V
power supply and can be configured to accept either
single-ended or differential input signals.
The ADS801 employs digital error correction to provide
excellent Nyquist differential linearity performance for
demanding imaging applications. Its low distortion,
high SNR and high oversampling capability give it the
extra margin needed for telecommunications, instru-
mentation and video applications.
This high performance A/D converter is specified over
temperature for AC and DC performance at a 25MHz
sampling rate. The ADS820 is available in 28-lead
SOIC and 28-lead SSOP packages.
CLK
Timing
Circuitry
MSBI
OE
IN
IN
REFT
CM
REFB
T/H
+3.25V
Pipeline
A/D
Error
Correction
Logic
3-State
Outputs
12-Bit
Digital
Data
+1.25V
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
©1995 Burr-Brown Corporation
PDS-1287E
Printed in U.S.A. September, 1996




Burr-Brown Corporation

ADS801 Datasheet Preview

ADS801 Datasheet

12-Bit/ 25MHz Sampling ANALOG-TO-DIGITAL CONVERTER

No Preview Available !

SPECIFICATIONS
At TA = +25°C, VS = +5V, Sampling Rate = 25MHz, with a 50% duty cycle clock having a 2ns rise/fall time, unless otherwise noted.
ADS801U
ADS801E
PARAMETER
CONDITIONS
TEMP
MIN TYP MAX MIN TYP MAX
UNITS
Resolution
Specified Temperature Range
ANALOG INPUT
Differential Full Scale Input Range
Common-Mode Voltage
Analog Input Bandwidth (–3dB)
Small Signal
Full Power
Input Impedance
DIGITAL INPUT
Logic Family
Convert Command
ACCURACY(3)
Gain Error
TAMBIENT
Both Inputs,
180° Out of Phase
–20dBFS(2) Input
0dBFS Input
Start Conversion
Gain Tempco
Power Supply Rejection of Gain
Input Offset Error
Power Supply Rejection of Offset
CONVERSION CHARACTERISTICS
Sample Rate
Data Latency
DYNAMIC CHARACTERISTICS
Differential Linearity Error
f = 500kHz
Delta +VS = ±5%
Delta +VS = ±5%
f = 10MHz
No Missing Codes
Integral Linearity Error at f = 500kHz
Spurious-Free Dynamic Range (SFDR)
f = 500kHz (–1dBFS input)
f = 10MHz (–1dBFS input)
Two-Tone Intermodulation Distortion (IMD)(4)
f = 4.4MHz and 4.5MHz (–7dBFS each tone)
Signal-to-Noise Ratio (SNR)
f = 500kHz (–1dBFS input)
f = 10MHz (–1dBFS input)
Signal-to-(Noise + Distortion) (SINAD)
f = 500kHz (–1dBFS input)
f = 10MHz (–1dBFS input)
Differential Gain Error
Differential Phase Error NTSC or PAL
Aperture Delay Time
Aperture Jitter
Overvoltage Recovery Time(5)
NTSC or PAL
1.5x Full Scale Input
+25°C
+25°C
+25°C
Full
+25°C
Full
+25°C
+25°C
0°C to +85°C
+25°C
0°C to +85°C
0°C to +85°C
Full
+25°C
Full
+25°C
Full
+25°C
Full
+25°C
Full
+25°C
Full
+25°C
Full
+25°C
Full
+25°C
+25°C
+25°C
+25°C
+25°C
12
–40
+85
+1.25
+3.25
+2.25
400
65
1.25 || 4
TTL/HCT Compatible CMOS
Falling Edge
±0.6 ±1.5
±1.0 ±2.5
±85
0.03 0.15
±2.1 ±3.0
0.05 0.15
10k 25M
6.5
±0.3
±0.4
±0.3
±0.4
Guaranteed
±1.7
±1.0
±1.0
±1.0
±1.0
63 77
62 73
57 61
55 61
–64
–63
64 66
61 64
62 65
58 64
63 66
60 63
56 59
54 58
0.5
0.1
2
7
2
12
T(1)
T
T
T
T
T
Bits
T °C
TV
V
MHz
MHz
M|| pF
TTL/HCT Compatible CMOS
Falling Edge
TT
%
TT
%
T ppm/°C
T T %FSR/%
TT
%
T T %FSR/%
T T Sample/s
T Convert Cycle
±0.4
±0.5
±0.4
±0.5
Guaranteed
T
T
T
T
T
TT
TT
TT
TT
T
T
62 64
59 T
TT
TT
61 64
58 T
TT
TT
T
T
T
T
T
LSB
LSB
LSB
LSB
LSB
LSB
dBFS
dBFS
dBFS
dBFS
dBc
dBc
dB
dB
dB
dB
dB
dB
dB
dB
%
degrees
ns
ps rms
ns
NOTE: (1) An asterisk (T) indicates same specifications as the ADS801U. (2) dBFS refers to dB below Full Scale. (3) Percentage accuracies are referred to the
internal A/D Full Scale Range of 4Vp-p. (4) IMD is referred to the larger of the two input signals. If referred to the peak envelope signal (0dB), the intermodulation
products will be 7dB lower. (5) No “rollover” of bits.
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.
®
ADS801
2


Part Number ADS801
Description 12-Bit/ 25MHz Sampling ANALOG-TO-DIGITAL CONVERTER
Maker Burr-Brown Corporation
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ADS801 Datasheet PDF






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