|
|
PDF ADS8482 Data sheet ( Hoja de datos )
| Número de pieza | ADS8482 | |
| Descripción | MICROPOWER SAMPLING ANALOG-TO-DIGITAL CONVERTER | |
| Fabricantes | Burr-Brown | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ADS8482 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
www.DataSheet4U.com
BurrĆBrown Products
from Texas Instruments
ADS8482
SLAS386A – JULY 2005 – REVISED JUNE 2006
18-BIT, 1-MSPS, PSEUDO-BIPOLAR, FULLY DIFFERENTIAL INPUT, MICROPOWER
SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE,
REFERENCE
FEATURES
APPLICATIONS
• 0 to 1-MHz Sample Rate
• ±1.2 LSB Typ, ±2.5 LSB Max INL
• +0.75/-0.6 LSB Typ, +1.5/-1 LSB Max DNL
• 18-Bit NMC Ensured Over Temperature
• ±0.05-mV Offset Error
• Medical Instruments
• Optical Networking
• Transducer Interface
• High Accuracy Data Acquisition Systems
• Magnetometers
• ±0.05-PPM/°C Offset Error Drift
• ±0.035 %FSR Gain Error
• ±0.5-PPM/°C Gain Error Drift
• 99dB SNR, -121dB THD, 123dB SFDR
• Zero Latency
• Low Power: 225 mW at 1 MSPS
• Unipolar Differential Input Range: Vref to –Vref
• Onboard Reference with 6 PPM/°C Drift
DESCRIPTION
The ADS8482 is an 18-bit, 1-MSPS A/C converter
with an internal 4.096-V reference and a
pseudo-bipolar, fully differential input. The device
includes a 18-bit capacitor-based SAR A/D converter
with inherent sample and hold. The ADS8482 offers
a full 18-bit interface, a 16-bit option where data is
read using two read cycles, or an 8-bit bus option
using three read cycles.
• Onboard Reference Buffer
• High-Speed Parallel Interface
• Wide Digital Supply 2.7 V to 5.25 V
The ADS8482 is available in a 48-lead 7x7 QFN
package and is characterized over the industrial
–40°C to 85°C temperature range.
• 8-/16-/18-Bit Bus Transfer
• 48-Pin 7x7 QFN Package
HIGH SPEED SAR CONVERTER FAMILY
TYPE/SPEED
18-Bit Pseudo-Diff
18-Bit Pseudo-Bipolar, Fully Diff
16-Bit Pseudo-Diff
16-Bit Pseudo-Bipolar, Fully Diff
14-Bit Pseudo-Diff
12-Bit Pseudo-Diff
500 kHz
ADS8383
ADS8327
ADS8328
~600 kHz
ADS8381
ADS8380 (s)
ADS8382 (s)
ADS8370 (s)
ADS8372 (s)
750 kHz
ADS8371
1 MHz
ADS8481
ADS8482
ADS8471
ADS8472
ADS7886
1.25 MHz
2 MHz
3 MHz
4MHz
ADS8401
ADS8405
ADS8402
ADS8406
ADS7890 (s)
ADS8411
ADS8410 (s)
ADS8412
ADS8413 (s)
ADS7883
ADS7891
ADS8422
ADS7881
REFOUT
+IN
−IN
REFIN
+
_ CDAC
4.096-V
Internal
Reference
SAR
Comparator
Clock
Output
Latches
and
3-State
Drivers
Conversion
and
Control Logic
BYTE
16-/8-Bit
Parallel DA TA
Output Bus
BUS 18/16
CONVST
BUSY
CS
RD
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 the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005–2006, Texas Instruments Incorporated
1 page  
ADS8482
www.ti.com
SLAS386A – JULY 2005 – REVISED JUNE 2006
SPECIFICATIONS (Continued)
TA = –40°C to 85°C, +VA = 5 V, +VBD = 3 V or 5 V, Vref = 4.096 V, fSAMPLE = 1 MSPS (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP
MAX
VOLTAGE REFERENCE INPUT
Reference voltage at REFIN, Vref
Reference resistance(1)
3.0 4.096 +VA – 0.8
500
Reference current drain
INTERNAL REFERENCE OUTPUT
fs = 1 MHz
1
Internal reference start-up time
From 95% (+VA), with 1-µF storage capacitor
120
Reference voltage range, Vref
Source current
IO = 0
Static load
4.081 4.096
4.111
10
Line regulation
+VA = 4.75 V ~ 5.25 V
60
Drift
DIGITAL INPUT/OUTPUT
IO = 0
±6
Logic family –CMOS
VIH
Logic level
VIL
VOH
VOL
Data format – Straight Binary
IIH = 5 µA
IIL = 5 µA
IOH = 2 TTL loads
IOL = 2 TTL loads
+VBD – 1
–0.3
+VBD – 0.6
+VBD + 0.3
0.8
POWER SUPPLY REQUIREMENTS
Power supply
voltage
+VBD
+VA
2.7
4.75
3.3
5
5.25
5.25
Supply current(2)
Power dissipation(2)
TEMPERATURE RANGE
fs = 1 MHz
fs = 1 MHz
45 50
225 250
Operating free-air
–40 85
UNIT
V
kΩ
mA
ms
V
µA
µV
PPM/°C
V
V
V
mA
mW
°C
(1) Can vary ±20%
(2) This includes only +VA current. +VBD current is typical 1 mA with 5 pF load capacitance on all output pins.
Submit Documentation Feedback
5
5 Page 
www.ti.com
ADS8482
SLAS386A – JULY 2005 – REVISED JUNE 2006
TYPICAL CHARACTERISTICS (continued)
OFFSET ERROR
vs
FREE-AIR TEMPERATURE
0
-0.01
-0.02
-0.03
+VA = 5 V,
+VBD = 5 V,
fi = 1 MSPS,
Vref = 4.096 V
-0.04
-0.05
-0.06
-0.07
-0.08
-0.09
-0.1
-40 -25 -10 5 20 35 50 65 80
TA - Free-Air Temperature - °C
Figure 13.
-0.01
-0.02
-0.03
GAIN ERROR
vs
SUPPLY VOLTAGE
TA = 25°C,
fi = 1 MSPS,
Vref = 4.096
-0.04
-0.05
-0.06
-0.07
-0.08
4.75
4.85 4.95 5.05 5.15
Supply Voltage - V
Figure 16.
5.25
OFFSET ERROR TEMPERATURE
DRIFT DISTRIBUTION (35 Samples)
14
+VA = 5 V,
12
+VBD = 5 V,
fi = 1 MSPS,
10 Vref = 4.096 V
13
11
8
6
4
3
44
2
0
0
0.01
0.03 0.04 0.05 0.07
Offset Drift - ppm/C
0.08
Figure 19.
OFFSET ERROR
vs
SUPPLY VOLTAGE
0
-0.01
-0.02
-0.03
TA = 25°C,
fi = 1 MSPS,
Vref = 4.096 V
-0.04
-0.05
-0.06
-0.07
-0.08
-0.09
-0.1
4.75
4.85 4.95 5.05 5.15
Supply Voltage - V
Figure 14.
5.25
GAIN ERROR
vs
FREE-AIR TEMPERATURE
-0.02
-0.025
-0.03
-0.035
+VA = 5 V,
+VBD = 5 V,
fi = 1 MSPS,
Vref = 4.096 V
-0.04
-0.045
-0.05
-0.055
-0.06
-0.065
-0.07
-40 -25 -10 5 20 35 50 65
TA - Free-Air Temperature - °C
80
Figure 17.
GAIN ERROR TEMPERATURE
DRIFT DISTRIBUTION (35 Samples)
10
9
9
+VA = 5 V,
+VBD = 5 V,
8
8 fi = 1 MSPS,
7 Vref = 4.096 V
7
6
6
5
4
3
2
1
1
0
0.03
4
0.19 0.35 0.50 0.66
Gain Error Drift - ppm/C
0.90
Figure 20.
OFFSET ERROR
vs
REFERENCE VOLTAGE
0
-0.01
-0.02
-0.03
VDD = 5 V,
TA = 25°C,
fi = 1 MSPS
-0.04
-0.05
-0.06
-0.07
-0.08
-0.09
-0.1
3
3.2 3.4 3.6 3.8
4
Reference Voltage - V
4.2
Figure 15.
GAIN ERROR
vs
REFERENCE VOLTAGE
0.1
0.08
VDD = 5 V,
TA = 25°C,
0.06 fi = 1 MSPS
0.04
0.02
0
-0.02
-0.04
-0.06
-0.08
-0.1
3
3.2 3.4 3.6 3.8
4
Reference Voltage - V
Figure 18.
4.2
TOTAL HARMONIC DISTORTION
vs
REFERENCE VOLTAGE
-119
-120
+VA = 5 V,
+VBD = 5 V,
fs = 1 MSPS,
TA = 25°C,
fi = 2 kHz
-121
-122
-123
3
3.2 3.4 3.6 3.8 4
Vref - Reference Voltage - V
Figure 21.
4.2
Submit Documentation Feedback
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ADS8482.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ADS8481 | MICROPOWER SAMPLING ANALOG-TO-DIGITAL CONVERTER |  Burr-Brown Corporation |
| ADS8481 | 18-Bit 1-MSPS Pseudo-Diff Unipolar Input Micro Samp ADC w/Parallell Interface (Rev. A) |  Texas Instruments |
| ADS8482 | MICROPOWER SAMPLING ANALOG-TO-DIGITAL CONVERTER | Burr-Brown |
| ADS8482 | 18-Bit 1-MSPS Differential Input Micropower Samp Analog-to-Digital Converter (Rev. A) | Texas Instruments |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |