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PDF ADS7807P Data sheet ( Hoja de datos )
| Número de pieza | ADS7807P | |
| Descripción | Low-Power 16-Bit Sampling CMOS ANALOG-to-DIGITAL CONVERTER | |
| Fabricantes | Burr-Brown Corporation | |
| Logotipo |  |
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® ADS7807
Low-Power 16-Bit Sampling CMOS
ANALOG-to-DIGITAL CONVERTER
FEATURES
q 35mW max POWER DISSIPATION
q 50µW POWER DOWN MODE
q 25µs max ACQUISITION AND
CONVERSION
q ±1.5LSB max INL
q DNL: 16 bits “No Missing Codes”
q 86dB min SINAD WITH 1kHz INPUT
q ±10V, 0V TO +5V, AND 0V TO +4V INPUT
RANGES
q SINGLE +5V SUPPLY OPERATION
q PARALLEL AND SERIAL DATA OUTPUT
q PIN-COMPATIBLE WITH 12-BIT ADS7806
q USES INTERNAL OR EXTERNAL
REFERENCE
q 28-PIN 0.3" PLASTIC DIP AND SOIC
DESCRIPTION
The ADS7807 is a low-power, 16-bit, sampling A/D
using state-of-the-art CMOS structures. It contains a
complete 16-bit, capacitor-based, SAR A/D with S/H,
clock, reference, and microprocessor interface with
parallel and serial output drivers.
The ADS7807 can acquire and convert 16-bits to
within ±1.5LSB in 25µs max while consuming only
35mW max. Laser-trimmed scaling resistors provide
standard industrial input ranges of ±10V and 0V to
+5V. In addition, a 0V to +4V range allows develop-
ment of complete single supply systems.
The 28-pin ADS7807 is available in a plastic 0.3" DIP
and in an SOIC, both fully specified for operation over
the industrial –40°C to +85°C temperature range.
R1IN
40kΩ
R2IN
20kΩ
10kΩ
CAP
40kΩ
REF
Clock
Successive Approximation Register and Control Logic
R/C
CS
BYTE
Power
Down
CDAC
Comparator
Buffer
6kΩ
Internal
+2.5V Ref
Reference
Power
Down
Parallel
and
Serial
Data
Out
BUSY
Serial Data
Clock
Serial Data
Parallel Data
8
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 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©1992 Burr-Brown Corporation
PDS-1159C
Printed in U.S.A. November, 1994
1 page  
TYPICAL PERFORMANCE CURVES
At TA = +25°C, fS = 40kHz, VDIG = VANA = +5V, using internal reference and fixed resistors shown in Figure 7b, unless otherwise specified.
FREQUENCY SPECTRUM
FREQUENCY SPECTRUM
(8192 Point FFT; fIN = 1kHz, 0dB)
0
(8192 Point FFT; fIN = 15kHz, 0dB)
0
–10 –10
–20 –20
–30 –30
–40 –40
–50 –50
–60 –60
–70 –70
–80 –80
–90 –90
–100
–100
–110
–110
–120
–120
–130
–130
0 5 10 15 20
0 5 10 15
Frequency (kHz)
Frequency (kHz)
20
100
90
80
70
60
50
40
30
20
10
100
SIGNAL-TO-(NOISE + DISTORTION)
vs INPUT FREQUENCY (fIN = 0dB)
1k 10k 100k
Input Signal Frequency (Hz)
1M
100
90
80
70
60
50
40
30
20
10
0
SIGNAL-TO-(NOISE + DISTORTION)
vs INPUT FREQUENCY AND INPUT AMPLITUDE
0dB
–20dB
–60dB
2 4 6 8 10 12 14 16 18 20
Input Signal Frequency (kHz)
SIGNAL-TO-(NOISE + DISTORTION) vs TEMPERATURE
(fIN = 1kHz, 0dB; fS = 10kHz to 40kHz)
100
95
10kHz30kHz
20kHz
90
40kHz
85
80
75
–75 –50 –25
0 25 50 75 100 125 150
Temperature (°C)
A.C. PARAMETERS vs TEMPERATURE
(fIN = 1kHz, 0dB)
110
SFDR
105
–80
–85
100 –90
95
SNR
90
THD
–95
–100
85
SINAD
80
–75 –50 –25
–105
0 25 50 75
Temperature (°C)
–110
100 125 150
®
5 ADS7807
5 Page 
FIGURE 5. Conversion and Read Timing with External Clock (EXT/INT Tied HIGH) Read after Conversion.
11 ADS7807
®
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet ADS7807P.PDF ] | |
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