ANALOG-TO-DIGITAL CONVERTER. ADS823 Datasheet

ADS823 CONVERTER. Datasheet pdf. Equivalent

ADS823 Datasheet
Recommendation ADS823 Datasheet
Part ADS823
Description 10-Bit/ 60MHz Sampling ANALOG-TO-DIGITAL CONVERTER
Feature ADS823; www.DataSheet4U.com ADS ADS 826 823 ADS823 ADS826 SBAS070B – OCTOBER 1995 – REVISED AUGUST 2002.
Manufacture Burr-Brown Corporation
Datasheet
Download ADS823 Datasheet




Burr-Brown Corporation ADS823
www.DataSheet4U.com
ADS823
ADS823
ADS826
ADS826
SBAS070B – OCTOBER 1995 – REVISED AUGUST 2002
10-Bit, 60MHz Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q HIGH SNR: 60dB
q HIGH SFDR: 74dBFS
q LOW POWER: 265mW
q INTERNAL/EXTERNAL REFERENCE OPTION
q SINGLE-ENDED OR
DIFFERENTIAL ANALOG INPUT
q PROGRAMMABLE INPUT RANGE
q LOW DNL: 0.25LSB
q SINGLE +5V SUPPLY OPERATION
q +3V/+5V LOGIC I/O COMPATIBLE (ADS826)
q POWER DOWN: 20mW
q SSOP-28 PACKAGE
APPLICATIONS
q MEDICAL IMAGING
q COMMUNICATIONS
q CCD IMAGING
q VIDEO DIGITIZING
q TEST EQUIPMENT
DESCRIPTION
The ADS823 and ADS826 are pipeline, CMOS Analog-to-
Digital Converters (ADCs) that operate from a single +5V
power supply. These converters provide excellent perfor-
mance with a single-ended input and can be operated with a
differential input for added spurious performance. These
high-performance converters include a 10-bit quantizer, high-
bandwidth track-and-hold, and a high-accuracy internal ref-
erence. They also allow for disabling the internal reference
and utilizing external references. This external reference
option provides excellent gain and offset matching when
used in multi-channel applications or in applications where
full-scale range adjustment is required.
The ADS823 and ADS826 employ digital error correction
techniques to provide excellent differential linearity for de-
manding imaging applications. Their low distortion and high
SNR give the extra margin needed for medical imaging,
communications, video, and test instrumentation. The ADS823
and ADS826 offer power dissipation of 265mW and also
provide a power-down mode, thus reducing power dissipa-
tion to only 20mW.
The ADS823 and ADS826 are specified at a maximum
sampling frequency of 60MHz and a single-ended input
range of 1.5V to 3.5V. The ADS823 and ADS826 are avail-
able in an SSOP-28 package and are pin-compatible with the
10-bit, 40MHz ADS822 and ADS825, and the 10-bit, 75MHz
ADS828.
+VS
ADS823
ADS826
CLK
Timing
Circuitry
VDRV
VIN IN
IN T/H
10-Bit
Pipelined
A/D Core
Error
Correction
Logic
3-State
Outputs
D0
•••
D9
CM Internal
Reference
Optional External
Reference
Int/Ext
PD OE
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
www.ti.com
Copyright © 1995, Texas Instruments Incorporated



Burr-Brown Corporation ADS823
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas Instru-
ments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may be
more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
ABSOLUTE MAXIMUM RATINGS(1)
+VS ....................................................................................................... +6V
Analog Input ............................................................. –0.3V to (+VS + 0.3V)
Logic Input ............................................................... –0.3V to (+VS + 0.3V)
Case Temperature ......................................................................... +100°C
Junction Temperature .................................................................... +150°C
Storage Temperature ..................................................................... +150°C
NOTE: (1) Stresses beyond those listed under "absolute maximum ratings" may cause
permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated under
"recommended operating conditions" is not implied. Exposure to absolute-maximum-
rated conditions of extended periods may affect device reliability.
EVALUATION MODULE ORDERING INFORMATION
PRODUCT
ADS823E
EVALUATION MODULE
DEM-ADS823E
PACKAGE/ORDERING INFORMATION
PRODUCT
ADS823E
"
ADS826E
"
PACKAGE-LEAD
SSOP-28
"
SSOP-28
"
PACKAGE
DESIGNATOR(1)
DB
"
DB
"
SPECIFIED
TEMPERATURE
RANGE
–40°C to +85°C
"
–40°C to +85°C
"
PACKAGE
MARKING
ADS823E
"
ADS826E
"
ORDERING
NUMBER(1)
ADS823E
ADS823E/1K
ADS826E
ADS826E/1K
TRANSPORT
MEDIA, QUANTITY
Rails
Tape and Reel, 1000
Rails
Tape and Reel, 1000
NOTE: (1) Fot the most current specifications and package information, refer to our web site at www.ti.com. (2) Models with a slash (/) are available only in Tape
and Reel in the quantities indicated (e.g., /1K indicates 1000 devices per reel). Ordering 1000 pieces of ADS823E/1K” will get a single 1000-piece Tape and Reel.
ELECTRICAL CHARACTERISTICS
At TA = full specified temperature range, VS = +5V single-ended input range = 1.5V to 3.5V, sampling rate = 60MHz, external reference, unless otherwise noted.
ADS823E
MIN TYP
MAX
ADS826E(1)
MIN TYP MAX
UNITS
RESOLUTION
SPECIFIED TEMPERATURE RANGE
ANALOG INPUT
Standard Single-Ended Input Range
Optional Single-Ended Input Range
Common-Mode Voltage
Optional Differential Input Range
Analog Input Bias Current
Input Impedance
Track-Mode Input Bandwidth
CONVERSION CHARACTERISTICS
Sample Rate
Data Latency
DYNAMIC CHARACTERISTICS
Differential Linearity Error (largest code error)
f = 1MHz
f = 10MHz
No Missing Codes
Integral Nonlinearity Error, f = 1MHz
Spurious-Free Dynamic Range(2)
f = 1MHz
f = 10MHz
2-Tone Intermodulation Distortion(4)
f = 9.5MHz and 9.9MHz (–7dB each tone)
Signal-to-Noise Ratio (SNR)
f = 1MHz
f = 10MHz
Signal-to-(Noise + Distortion) (SINAD)
f = 1MHz
f = 10MHz
Effective Number of Bits(5), f = 1MHz
Output Noise
Aperture Delay Time
Aperture Jitter
Over Voltage Recovery Time(5)
Full-Scale Step Acquisition Time
Ambient Air
2Vp-p
1Vp-p
2Vp-p
–3dBFS Input
Referred to Full-Scale Sinewave
Referred to Full-Scale Sinewave
Input Grounded
10 Tested
–40 to +85
1.5
2
2.5
2
1
1.25 || 5
300
10k
5
3.5
3
3
60M
±0.25
±0.25
Tested
±0.5
±1.0
±2.0
74
67 74
64
60
57 60
59
56 59
9.5
0.2
3
1.2
2
5
10 Tested
–40 to +85
✻✻
✻✻
✻✻
✻✻
Tested
73
65 73
59
56 59
58
55 58
Bits
°C
V
V
V
V
µA
M|| pF
MHz
Samples/s
Clk Cyc
LSB
LSB
LSBs
dBFS(3)
dBFS
dBc
dB
dB
dB
dB
Bits
LSBs rms
ns
ps rms
ns
ns
2 ADS823, ADS826
www.ti.com
SBAS070B



Burr-Brown Corporation ADS823
ELECTRICAL CHARACTERISTICS (Cont.)
At TA = full specified temperature range, VS = +5V single-ended input range = 1.5V to 3.5V, sampling rate = 60MHz, external reference, unless otherwise noted.
ADS823E
MIN TYP
MAX
ADS826E(1)
MIN TYP MAX
UNITS
DIGITAL INPUTS
Logic Family
Convert Command
High Level Input Current(6) (VIN = 5V)
Low Level Input Current (VIN = 0V)
High Level Input Voltage
Low Level Input Voltage
Input Capacitance
DIGITAL OUTPUTS
Logic Family
Logic Coding
Low Output Voltage (IOL = 50µA to 1.6mA)
High Output Voltage, (IOH = 50µA to 0.5mA)
Low Output Voltage, (IOL = 50µA to 1.6mA)
High Output Voltage, (IOH = 50µA to 0.5mA)
3-State Enable Time
3-State Disable Time
Output Capacitance
ACCURACY (Internal Reference, 2Vp-p,
Unless Otherwise Noted)
Zero Error (referred to –FS)
Zero Error Drift (referred to –FS)
Midscale Offset Error
Gain Error(7)
Gain Error Drift(7)
Gain Error(8)
Gain Error Drift(8)
Power-Supply Rejection of Gain
REFT Tolerance
REFB Tolerance(9)
External REFT Voltage Range
External REFB Voltage Range
Reference Input Resistance
POWER-SUPPLY REQUIREMENTS
Supply Voltage: +VS
Supply Current: +IS
Power Dissipation: VDRV = 5V
VDRV = 3V
VDRV = 5V
VDRV = 3V
Power-Down
Thermal Resistance, θJA
SSOP-28
Start Conversion
VDRV = 5V
VDRV = 3V
OE = H to L
OE = L to H
fS = 2.5Mhz
At 25°C
At 25°C
At 25°C
At 25°C
VS = ±5%
Deviation From Ideal 3.5V
Deviation From Ideal 1.5V
REFT to REFB
Operating
Operating
External Reference
External Reference
Internal Reference
Internal Reference
Operating
CMOS-Compatible
Rising Edge of Convert Clock
+100
+10
+3.5
+1.0
5
TTL, +3V/+5V CMOS-Compatible
Rising Edge of Convert Clock
+2.0
+0.8
CMOS
Straight Offset Binary
+0.1
+4.9
+0.1
+2.8
2 40
2 10
5
CMOS
Straight Offset Binary
✻✻
✻✻
µA
µA
V
V
pF
V
V
V
V
ns
ns
pF
REFB + 0.8
1.25
±1.0
16
±1.5
66
±1.0
23
70
±10
±10
3.5
1.5
1.6
+4.75
+5.0
55
275
265
295
285
20
89
±3.0
±3.5
±2.5
±25
±25
VS – 1.25
REFT – 0.8
+5.25
335
350
±0.29
% FS
ppm/°C
% FS
% FS
ppm/°C
% FS
ppm/°C
dB
mV
mV
V
V
k
V
mA
mW
mW
mW
mW
mW
°C/W
Indicates the same specifications as the ADS823E.
NOTES: (1) ADS826 accepts a +3V clock input. (2) Spurious-Free Dynamic Range refers to the magnitude of the largest harmonic. (3) dBFS means dB relative to Full-Scale. (4) 2-tone intermodulation
distortion is referred to the largest fundamental tone. This number will be 6dB higher if it is referred to the magnitude of the 2-tone fundamental envelope. (5) Effective number of bits (ENOB) is defined
by (SINAD – 1.76)/6.02. (6) A 50kpull-down resistor is inserted internally on OE pin. (7) Includes internal reference. (8) Excludes internal reference. (9) Ensured by design.
ADS823, ADS826
SBAS070B
www.ti.com
3







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