ANALOG-TO-DIGITAL CONVERTER. ADS902 Datasheet

ADS902 CONVERTER. Datasheet pdf. Equivalent

ADS902 Datasheet
Recommendation ADS902 Datasheet
Part ADS902
Description 10-Bit/ 30MHz Sampling ANALOG-TO-DIGITAL CONVERTER
Feature ADS902; ® ADS 902 E ADS902 10-Bit, 30MHz Sampling ANALOG-TO-DIGITAL CONVERTER TM FEATURES q HIGH SNR: 57d.
Manufacture Burr-Brown Corporation
Datasheet
Download ADS902 Datasheet




Burr-Brown Corporation ADS902
®
ADS902E
ADS902
TM 10-Bit, 30MHz Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q HIGH SNR: 57dB
q EXTERNAL REFERENCE
q LOW POWER: 140mW
q ADJUSTABLE FULL SCALE RANGE
q POWER DOWN
q 28-PIN SSOP PACKAGE
APPLICATIONS
q BATTERY POWERED EQUIPMENT
q CAMCORDERS
q PORTABLE TEST EQUIPMENT
q COMPUTER SCANNERS
q COMMUNICATIONS
ADS902
DESCRIPTION
The ADS902 is a high speed pipelined analog-to-
digital converter that is specified to operate from a
single +5V supply. This converter includes a wide
bandwidth track/hold and a 10-bit quantizer. The per-
formance is specified with a single-ended input range
of 2.25V to 3.25V, or 2V to 4V. The input range is set
by the external reference values.
The ADS902 employs digital error correction tech-
niques to provide excellent differential linearity for
demanding imaging applications. Its low distortion
and high SNR give the extra margin needed for tele-
communications, video and test instrumentation appli-
cations. This high performance A/D converter is speci-
fied to operate at a 30MHz sampling rate. The ADS902
is available in a 28-pin SSOP package.
CLK
Timing
Circuitry
LVDD
IN T/H
Pipeline
A/D
Error
Correction
Logic
3-State
Outputs
10-Bit
Digital
Data
Reference
Ladder
REFT CM REFB
Pwrdn OE
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
©1996 Burr-Brown Corporation
PDS-11359B
ADS902Printed in U.S.A., February, 1997
®



Burr-Brown Corporation ADS902
SPECIFICATIONS
At TA = +25°C, VS = LVDD = +5V, REFB = +2.25V, REFT = +3.25V, Sampling Rate = 30MHz, unless otherwise specified.
1Vp-p
ADS902E
2Vp-p
PARAMETER
CONDITIONS
Resolution
Specified Temperature Range
Ambient Air
ANALOG INPUT
Specified Full Scale Input Range(1)
Common-Mode Voltage (Midscale)
Track-Mode Input Bandwidth
Analog Input Bias Current
Input Impedance
DIGITAL INPUTS
Logic Family
High Input Voltage, VIH
Low Input Voltage, VIL
High Input Current, IIH
Low Input Current, IIL
Input Capacitance
CONVERSION CHARACTERISTICS
Sample Rate
Data Latency
DYNAMIC CHARACTERISTICS
Differential Linearity Error (Largest Code Error)
f = 500kHz
f = 12.5MHz
No Missing Codes
Spurious-Free Dynamic Range
f = 12.5MHz (–1dBFS(2) input)
Integral Nonlinearity Error, f = 500kHz
Signal-to-Noise Ratio (SNR)
f = 500kHz (–1dBFS input)
f = 12.5MHz (–1dBFS input)
Maximum SNR
f = 9MHz (–1dBFS input)
Signal-to-(Noise + Distortion) (SINAD)
f = 500kHz (–1dBFS input)
f = 3.58MHz (–1dBFS input)
f = 12.5MHz (–1dBFS) input)
Effective Number of Bits(3), f =12.5MHz
Output Noise
Aperture Delay Time
Aperture Jitter
Referred to Sinewave Input Signal
Referred to DC FS Input Signal
Input Grounded
DIGITAL OUTPUTS
Logic Family
Logic Coding
High Output Voltage, VOH
Low Output Voltage, VOL
3-State Enable Time
3-State Disable Time
OE Internal Pull-Down to Gnd
Power-Down Enable Time
Power-Down Disable Time
Power-Down Internal Pull-Down to Gnd
CL = 15pF
OE = L
OE = H
Pwrdn = L
Pwrdn = H
ACCURACY
Gain Error
Input Offset Error(4)
Power Supply Rejection (Gain)
Power Supply Rejection (Offset)
External REFT Voltage Range
External REFB Voltage Range
Reference Input Resistance
VS = ±5%
VS = ±5%
REFT to REFB
TEMP MIN
–40
TYP MAX
10
+85
1
+2.75
350
1
1.25 || 5
TTL/HCT Compatible CMOS
+2.0 +VS
+0.8
±10
±10
5
Full 10k
30M
5
MIN TYP MAX
10
–40 +85
2
3
T
T
T
TTL/HCT Compatible CMOS
TT
T
T
T
T
TT
T
Full ±0.3 ±1.0
Full ±0.3 ±1.0
Full Guaranteed
Full 53
Full ±2.0 ±4.5
Full 48
Full 48
53
53
62
Full 46
Full 45
Full 45
50
50
49
7.8
0.2
4
7
T
T
Guaranteed
T
T
50 58
TT
52 57
66
47 53
T
T
T
TTL/HCT Compatible CMOS
Straight Offset Binary
+2.4 LVDD
+0.4
20 40
18 10
50
133
18
50
TTL/HCT Compatible CMOS
Straight Offset Binary
TT
T
TT
TT
T
T
T
T
Full 0.5
Full 1.4
Full 42
56
Full 42
68
Full REFB +0.5 +3.25 VS–0.8
Full +0.8 +2.25 REFT –0.5
4
T
T
T
T
1
T
T
T
+4 T
+2 T
T
UNITS
Bits
°C
Vp-p
V
MHz
µA
M|| pF
V
V
µA
µA
pF
Samples/s
Clk Cyc
LSB
LSB
dB
LSB
dB
dB
dB
dB
dB
dB
Bits
LSB rms
ns
ps rms
V
V
ns
ns
k
ns
ns
k
%FS
%FS
dB
dB
V
V
k
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.
®
ADS902
2



Burr-Brown Corporation ADS902
SPECIFICATIONS (CONT)
At TA = +25°C, VS = LVDD = +5V, REFB = +2.25V, REFT = +3.25V, Sampling Rate = 30MHz, unless otherwise specified.
ADS902E
1Vp-p
2Vp-p
PARAMETER
CONDITIONS
TEMP MIN TYP MAX MIN TYP MAX UNITS
POWER SUPPLY REQUIREMENTS
Supply Voltage: +VS
Supply Current: +IS
Power Dissipation
Power Dissipation (Power Down)
Thermal Resistance, θJA
28-Pin SSOP
Full +4.25 +5.0 +5.25
Full 28
Full 140 160
Full 15
50
T
TT
V
T mA
T T mW
T mW
T °C/W
T Specification same as 1Vp-p.
NOTES: (1) The single-ended input range is set by REFB and REFT values. (2) dBFS means dB relative to Full Scale. (3) Effective number of bits (ENOB) is defined
by (SINAD – 1.76)/6.02. (4) Offset deviation from ideal negative full scale.
ABSOLUTE MAXIMUM RATINGS
+VS, LVDD .................................................................................................................................. +6V
Analog Input ...............................................................................+VS +0.3V
Logic Input ................................................................................. +VS +0.3V
Case Temperature ......................................................................... +100°C
Junction Temperature .................................................................... +150°C
Storage Temperature ..................................................................... +150°C
PACKAGE/ORDERING INFORMATION
PRODUCT
PACKAGE
PACKAGE
DRAWING TEMPERATURE
NUMBER(1)
RANGE
ADS902E
28-Pin SSOP
324 –40°C to +85°C
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix C of Burr-Brown IC Data Book.
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
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.
PIN CONFIGURATION
Top VIew
+VS
LVDD
(LSB) Bit 10
1
2
3
Bit 9 4
Bit 8 5
Bit 7 6
Bit 6 7
Bit 5 8
Bit 4 9
Bit 3 10
Bit 2 11
(MSB) Bit 1 12
GND 13
GND 14
ADS902
28 +VS
27 IN
26 CM
25 LnBY
24 REFB
23 NC
22 REFT
21 LpBY
20 GND
19 GND
18 +VS
17 Pwrdn
16 OE
15 CLK
SSOP
PIN DESCRIPTIONS
PIN DESIGNATOR
1 +VS
2 LVDD
3 Bit 10
4 Bit 9
5 Bit 8
6 Bit 7
7 Bit 6
8 Bit 5
9 Bit 4
10 Bit 3
11 Bit 2
12 Bit 1
13 GND
14 GND
15 CLK
16 OE
17 Pwrdn
18 +VS
19 GND
20 GND
21 LpBy
22 REFT
23 NC
24 REFB
25 LnBy
26 CM
27 IN
28 +VS
DESCRIPTION
Analog Supply
Output Logic Driver Supply Voltage
Data Bit 10 (D0, LSB)
Data Bit 9 (D1)
Data Bit 8 (D2)
Data Bit 7 (D3)
Data Bit 6 (D4)
Data Bit 5 (D5)
Data Bit 4 (D6)
Data Bit 3 (D7)
Data Bit 2 (D8)
Data Bit 1 (D9, MSB)
Analog Ground
Analog Ground
Convert Clock Input
Output Enable, Active Low
Power Down Pin
Analog Supply
Analog Ground
Analog Ground
Positive Ladder Bypass
Top Reference
No Connection
Bottom Reference
Negative Ladder Bypass
Common-Mode Voltage Output
Analog Input
Analog Supply
3 ADS902
®







@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)