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Burr-Brown Corporation

ADS7800 Datasheet Preview

ADS7800 Datasheet

12-Bit 3ms Sampling ANALOG-TO-DIGITAL CONVERTER

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® ADS7800
12-Bit 3µs Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q 333k SAMPLES PER SECOND
q STANDARD ±10V AND ±5V INPUT
RANGES
q DC PERFORMANCE OVER TEMP:
No Missing Codes
1/2LSB Integral Linearity Error
3/4LSB Differential Linearity Error
q AC PERFORMANCE OVER TEMP:
72dB Signal-to-Noise Ratio
80dB Spurious-free Dynamic Range
–80dB Total Harmonic Distortion
q INTERNAL SAMPLE/HOLD, REFERENCE,
CLOCK, AND 3-STATE OUTPUTS
q POWER DISSIPATION: 215mW max
q PACKAGE: 24-Pin Single-wide DIP
24-Lead SOIC
DESCRIPTION
The ADS7800 is a complete 12-bit sampling analog-
to-digital converter using state-of-the-art CMOS struc-
tures. It contains a complete 12-bit successive ap-
proximation A/D converter with internal sample/hold,
reference, clock, digital interface for microprocessor
control, and three-state output drivers.
The ADS7800 is specified at a 333kHz sampling rate.
Conversion time is factory set for 2.70µs max over
temperature, and the high speed sampling input stage
insures a total acquisition and conversion time of 3µs
max over temperature. Precision, laser-trimmed scal-
ing resistors provide industry-standard input ranges of
±5V or ±10V.
AC and DC performance are completely specified.
Two grades based on linearity and dynamic perform-
ance are available to provide the optimum price/
performance fit in a wide range of applications.
The 24-pin ADS7800 is available in plastic and side-
braze hermetic 0.3" wide DIPs, and in an SOIC
package. It operates from a +5V supply and either a
–12V or –15V supply. The ADS7800 is available in
grades specified over 0°C to +70°C and –40°C to
+85°C temperature ranges.
±10VIN
±5VIN
2V
Reference
Out
Control
Logic
Clock
CDAC
SAR
Internal
Ref
Comparator
Output
Latches
And
Three
State
Drivers
BUSY
Three
State
Parallel
Output
Data
Bus
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
© 1989 Burr-Brown Corporation
PDS-1018E
Printed in U.S.A. October, 1993




Burr-Brown Corporation

ADS7800 Datasheet Preview

ADS7800 Datasheet

12-Bit 3ms Sampling ANALOG-TO-DIGITAL CONVERTER

No Preview Available !

SPECIFICATIONS
ELECTRICAL
At TA = TMIN to TMAX, Sampling Frequency, fS, = 333kHz, –VS = –15V, VS = +5V, unless otherwise specified.
ADS7800JP/JU/AH
ADS7800KP/KU/BH
PARAMETER
CONDITIONS
RESOLUTION
ANALOG INPUT
Voltage Ranges
Impedance
±10V Range
±5V Range
THROUGHPUT SPEED
Conversion Time
Complete Cycle
Throughput Rate
Conversion Alone
Acquisition + Conversion
DC ACCURACY
Full Scale Error(1)
Full Scale Error Drift
Integral Linearity Error
Differential Linearity Error
No Missing Codes
Bipolar Zero(1)
Bipolar Zero Drift
Power Supply Sensitivity
Transition Noise(3)
–16.5V < –VS < –13.5V
–12.6V < –VS < –11.4V
+4.75V < VS < +5.25V
AC ACCURACY
Spurious-Free Dynamic Range
Total Harmonic Distortion
Two-tone Intermodulation Distortion
Signal-to-(Noise + Distortion) Ratio
Signal-to-Noise Ratio (SNR)
SAMPLING DYNAMICS
Aperture Delay
Aperture Jitter
Transient Response(5)
Overvoltage Recovery (6)
fIN = 47kHz
fIN = 47kHz
fIN1 = 24.4kHz (–6dB)
fIN2 = 28.5kHz (–6dB)
fIN = 47kHz
fIN = 47kHz
INTERNAL REFERENCE VOLTAGE
Voltage
Source Current Available
for External Loads
DIGITAL INPUTS
Logic Levels
VIL
VIH
IIL
IIH
DIGITAL OUTPUTS
Data Format
Data Coding
VOL
VOH
ILEAKAGE (High-Z State)
POWER SUPPLIES
Rated Voltage
–VS
VS (VSA and VSD)
Current
–IS
IS
Power Consumption
ISINK = 1.6mA
ISOURCE = 500µA
MIN
4.4
2.9
333
74
67
68
1.9
–0.3
+2.4
–5
+5
0.0
+2.4
–11.4
+4.75
TYP
MAX
12
±10V/±5V
6.3
4.2
8.1
5.4
2.5 2.7
2.6 3.0
380
6
Guaranteed
1
0.1
±0.50
±1
±1
±4
±1/2
±1/2
±1
77
–77 –74
–77 –74
70
71
13
150
130
150
2.0 2.1
10
MIN TYP
*
**
**
*
*
**
*
Guaranteed
*
*
77 80
–80
–80
69 72
70 73
*
*
*
*
**
*
+0.8
+5.3
*
*
*
*
±0.1
Parallel, 12-bit or 8-bit/4-bit
Binary Offset Binary
+0.4
*
+5.0
*
±5
*
–15
+5.0
3.5
18
135
–16.5
+5.25
6
25
215
*
*
*
*
*
*
*
MAX
*
*
*
*
*
±0.35
±1/2
±3/4
±2
*
*
±1/2
–77
–77
*
*
*
*
*
*
*
*
*
*
*
UNITS
Bits
V
k
k
µs
µs
kHz
%
ppm/°C
LSB(2)
LSB
LSB
ppm/°C
LSB
LSB
LSB
LSB
dB (4)
dB
dB
dB
dB
ns
ps, rms
ns
ns
V
µA
V
V
µA
µA
V
V
µA
V
V
mA
mA
mW
®
ADS7800
2


Part Number ADS7800
Description 12-Bit 3ms Sampling ANALOG-TO-DIGITAL CONVERTER
Maker Burr-Brown Corporation
Total Page 12 Pages
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