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PDF 7809LP Data sheet ( Hoja de datos )
| Número de pieza | 7809LP | |
| Descripción | 16-Bit Latchup Protected Analog to Digital Converter | |
| Fabricantes | Maxwell Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de 7809LP (archivo pdf) en la parte inferior de esta página. Total 23 Páginas | ||
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7809LP
16-Bit Latchup Protected
Analog to Digital Converter
20 kΩ
R1IN
10 kΩ
R2IN
5 kΩ
R3IN
20 kΩ
CAP
REF
R/C
Buffer
CS POWER DOWN
Successive Approximation Register and Control Logic
CDAC
Clock
Comparator
Serial Data
Out
BUSY
Data
Clock
Serial
Data
Internal
+2.5V Ref.
4 kΩ
Logic Diagram
FEATURES:
• RAD-PAK® radiation-hardened against natural
• space radiation
• Total dose hardness:
- > 100 krad (Si), depending upon space mission
• Latch-up Protection Technology (LPTTM)
• SEL converted into a reset
- Rate based on cross section and mission
• Same footprint as ADS7809
• Package: 24 pin RAD-PAK flat package
• 100 kHz min sampling rate
• ±10 V and 0 V to 5 V input range
• DNL: 15-bits “No Missing Codes”
• 83 dB min SINAD with 20 kHz input
• Single +5 V supply operation
• Utilizes internal or external reference
• Serial output
• Power dissipation: 132 mW max
DESCRIPTION:
Maxwell Technologies’ 7809LP high-speed 16-bit analog to
digital converter features a greater than 100 kilorad (Si) total
dose tolerance depending upon space mission. Using Max-
well’s radiation-hardened RAD-PAK® packaging technology, the
7809LP has the same footprint as ADS7809 and is latchup
protected by Maxwell Technologies’ Latchup Protection Tech-
nology (LPTTM). It is a 24 pin, 16-bit sampling analog-to-digital
converter using state-of-the-art CMOS structures. The
7809LP contains a 16-bit capacitor based SAR A/D with S/H,
reference, clock, interface for microprocessor use, and serial
output drivers. The 7809LP is specified at a 100kHz sampling
rate, and guaranteed over the full temperature range. Laser-
trimmed scaling resistors provide various input ranges include
±10 V and 0 to 5 V, while the innovative design allows opera-
tion from a single +5 V supply, with power dissipation of under
132 mW.
Maxwell Technologies' patented RAD-PAK® packaging technol-
ogy incorporates radiation shielding in the microcircuit pack-
age. It eliminates the need for box shielding while providing
the required radiation shielding for a lifetime in orbit or space
mission. In a GEO orbit, RAD-PAK® provides greater than 50
krad (Si) radiation dose tolerance. This product is available
with screening up to Maxwell Technologies self-defined Class
K.
01.11.05 Rev 7
(858) 503-3300- Fax: (858) 503-3301 - www.maxwell.com
All data sheets are subject to change without notice 1
©2005 Maxwell Technologies
All rights reserved.
1 page  
16-Bit Latchup Protected Analog to Digital Converter 7809LP
TABLE 6. 7809LP ANALOG INPUT AND THROUGHPUT SPEED
(SPECIFIED PERFORMANCE -40 TO +85°C)
PARAMETER
SUBGROUPS
MIN
TYP
MAX
Voltage Ranges
Impedance
Capacitance1
1, 2, 3
--
10 V, 0 V to 5 V
See Table 2.
35 --
Conversion Time
9, 10, 11
--
7.6
8
Complete Cycle (Acquire and Convert)
Throughput Rate 2
1. Guarenteed by design.
9, 10, 11
9, 10, 11
--
100
--
--
10
--
2. Tested by application of signal.
UNIT
pF
µs
µs
kHz
TABLE 7. 7809LP AC ACCURACY SPECIFICATIONS
(SPECIFIED PERFORMANCE -40 TO +85°C)
PARAMETER
SUBGROUPS
MIN
TYP
Spurious-Free Dynamic Range, fIN = 20 kHz 1
Total Harmonic Distortion, fIN = 20 kHz 1
Signal-to-Noise (Noise + Distortion) 1
fIN = 20 kHz
-60 dB Input
4, 5, 6
4, 5, 6
4, 5, 6
90
--
83
--
100
-100
88
30
Signal-to-Noise 1, fIN = 20 kHz
Full-Power Bandwidth 1,3
9, 10, 11
83
--
88
250
MAX
--
-90
--
--
--
--
UNIT
dB 2
dB
dB
dB
kHz
1. Guaranteed by design.
2. All specifications in dB are referred to a full-scale ±10 V input.
3. Full-Power Bandwidth defined as Full-Scale input frequency at which Signal-to-Noise (Noise + Distortion) degrades to 60 dB.
PARAMETER
Aperture Delay
Aperture Jitter
Transient Response FS Step
Overvoltage Recovery 1
TABLE 8. 7809LP SAMPLING DYNAMICS
(SPECIFIED PERFORMANCE -40 TO +85°C)
SUBGROUPS
MIN
TYP
MAX UNIT
9, 10, 11
9, 10, 11
-- 40 -- ns
Sufficient to meet AC specification
9, 10, 11
--
2
--
9, 10, 11
--
150
--
us
ns
1. Recovers to specified performance after 2 X FS input overvoltage.
01.11.05 Rev 7
All data sheets are subject to change without notice 5
©2005 Maxwell Technologies
All rights reserved.
5 Page 
16-Bit Latchup Protected Analog to Digital Converter 7809LP
FIGURE 4. CONVERSION AND READ TIMING WITH EXTERNAL CLOCK (EXT/INT TIED HIGH). READ DURING
CONVERSION
01.11.05 Rev 7
All data sheets are subject to change without notice 11
©2005 Maxwell Technologies
All rights reserved.
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet 7809LP.PDF ] | |
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