|
|
PDF AD5246 Data sheet ( Hoja de datos )
| Número de pieza | AD5246 | |
| Descripción | 128-Position I2C-Compatible Digital Resistor | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AD5246 (archivo pdf) en la parte inferior de esta página. Total 21 Páginas | ||
|
No Preview Available !
Data Sheet
FEATURES
128 positions
End-to-end resistance: 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ
Ultracompact, SC70-6 (2 mm × 2.1 mm) package
I2C-compatible interface
Full read/write of wiper register
Power-on preset to midscale
Single-supply 2.7 V to 5.5 V
Rheostat mode temperature coefficient: 45 ppm/°C
Low power, IDD = 0.9 µA at 3.3 V typical
Wide operating temperature range: −40°C to +125°C
APPLICATIONS
Mechanical potentiometer replacement in new designs
Transducer adjustment of pressure, temperature, position,
chemical, and optical sensors
RF amplifier-biasing
LCD brightness and contrast adjustment
Automotive electronics adjustment
Gain control and offset adjustment
GENERAL DESCRIPTION
The AD5247 provides a compact, 2 mm × 2.1 mm, packaged
solution for 128-position adjustment applications. This device
performs the same electronic adjustment function as a mechanical
potentiometer or a variable resistor. Available in four different
end-to-end resistance values (5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ),
these low temperature coefficient devices are ideal for high
accuracy and stability variable resistance adjustments.
The wiper settings are controllable through the I2C-compatible
digital interface, which can also be used to read back the present
wiper register control word. The 10 kΩ and 100 kΩ options each
128-Position I2C-Compatible
Digital Potentiometer
AD5247
FUNCTIONAL BLOCK DIAGRAM
VDD
SDA
SCL
I2C INTERFACE
A
W
WIPER
REGISTER
B
GND
Figure 1.
have three hard-coded slave address options available to allow
users access to three of these devices on one I2C bus (see Table 8
for a full list of slave address locations).
The resistance between the wiper and either end point of
the fixed resistor varies linearly with respect to the digital
code transferred into the RDAC latch. Note the terms digital
potentiometer, VR (variable resistor), and RDAC are used
interchangeably in this document.
Operating from a 2.7 V to 5.5 V power supply and consuming
0.9 µA (3.3 V) allows the AD5247 to be used in portable
battery-operated applications.
Rev. F
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2003–2012 Analog Devices, Inc. All rights reserved.
1 page  
AD5247
ELECTRICAL CHARACTERISTICS—10 kΩ, 50 kΩ, AND 100 kΩ VERSIONS
VDD = 5 V ± 10% or 3 V ± 10%, VA = VDD, −40°C < TA < +125°C, unless otherwise noted.
Table 2.
Parameter
DC CHARACTERISTICS—RHEOSTAT MODE
Resistor Differential Nonlinearity2
Resistor Integral Nonlinearity2
Nominal Resistor Tolerance3
Resistance Temperature Coefficient3
Output Resistance
DC CHARACTERISTICS—POTENTIOMETER
DIVIDER MODE
Differential Nonlinearity4
Integral Nonlinearity4
Voltage Divider Temperature Coefficient
Full-Scale Error (50 kΩ, 100 kΩ)
Zero-Scale Error (50 kΩ, 100 kΩ)
Full-Scale Error (10 kΩ)
Zero-Scale Error (10 kΩ)
RESISTOR TERMINALS
Voltage Range5
Capacitance A6
Capacitance W6
Common-Mode Leakage
DIGITAL INPUTS AND OUTPUTS
Input Logic High
Input Logic Low
Input Logic High
Input Logic Low
Input Current
Input Capacitance6
Output Logic Low (SDA)
POWER SUPPLIES
Power Supply Range
Supply Current
Power Dissipation7
Power Supply Sensitivity
Symbol Conditions
R-DNL
R-INL
∆RAB
∆RAB/∆T
RWB
RWB, VA = no connect
RWB, VA = no connect
Code = 0x00
DNL
INL
∆VW/∆T
VWFSE
VWZSE
VWFSE
VWZSE
Code = 0x40
Code = 0x7F
Code = 0x00
Code = 0x7F
VDD = 4.5 V to 5.5 V, code = 0x00
VDD = 2.7 V to 4.4 V, code = 0x00
VA, VW
CA
CW
ICM
f = 1 MHz, measured to GND,
code = 0x40
f = 1 MHz, measured to GND,
code = 0x40
VA = VDD/2
VIH VDD = 5 V
VIL VDD = 5 V
VIH VDD = 3 V
VIL VDD = 3 V
IIL VIN = 0 V or 5 V
CIL
VOL IOL = 3 mA
IOL = 6 mA
VDD RANGE
IDD
PDISS
PSSR
VDD = 5.5 V; VIH = VDD or VIL = GND
VDD = 5 V; VIH = VDD or VIL = GND
VDD = 3.3 V; VIH = VDD or VIL = GND
VIH = 5 V or VIL = 0 V, VDD = 5 V
VDD = 5 V ± 10%, code = midscale
Min Typ1
−1 ±0.1
−2 ±0.25
−20
45
75
−1 ±0.1
−1 ±0.2
15
−1 −1
0 0.4
−2 −0.5
0 0.5
0 0.5
GND
45
60
1
2.4
2.1
5
2.7
3
2.5
0.9
±0.01
Data Sheet
Max Unit
+1 LSB
+2 LSB
+20 %
ppm/°C
300 Ω
+1 LSB
+1 LSB
ppm/°C
0 LSB
1 LSB
0 LSB
1 LSB
1.2 LSB
VDD V
pF
pF
nA
V
0.8 V
V
0.6 V
±1 µA
pF
0.4 V
0.6 V
5.5
7
5.2
2
40
±0.02
V
µA
µA
µA
µW
%/%
Rev. F | Page 4 of 20
5 Page 
AD5247
100
2.7V
80 5V
60
40
20
0
–20
–40
–60
–80
–100
1
VA = VDD
RAB = 10kΩ
10 19 28 37 46 55 64 73 82 91 100 109 118 127
CODE (Decimal)
Figure 16. ∆VWB/∆T vs. Code
0
0x40
–6
0x20
–12
0x10
–18
0x08
–24
0x04
–30 0x02
–36 0x01
–42
–48
–54
–60
1k
10k 100k
1M
FREQUENCY (Hz)
Figure 17. Gain vs. Frequency vs. Code, RAB = 5 kΩ
10M
0
0x40
–6
0x20
–12
0x10
–18
0x08
–24
0x04
–30
0x02
–36 0x01
–42
–48
–54
–60
1k
10k 100k
1M
FREQUENCY (Hz)
Figure 18. Gain vs. Frequency vs. Code, RAB = 10 kΩ
10M
Data Sheet
0
–6
–12
–18
–24
–30
–36
–42
–48
–54
–60
1k
0x40
0x20
0x10
0x08
0x04
0x02
0x01
10k 100k
1M
FREQUENCY (Hz)
10M
Figure 19. Gain vs. Frequency vs. Code, RAB = 50 kΩ
0
–6 0x40
–12 0x20
0x10
–18
0x08
–24
–30 0x04
0x02
–36
0x01
–42
–48
–54
–60
1k
10k 100k 1M
FREQUENCY (Hz)
Figure 20. Gain vs. Frequency vs. Code, RAB = 100 kΩ
10M
0
–6
5kΩ
–12
10kΩ
–18
–24
100kΩ
50kΩ
–30
–36
–42
–48
–54
–60
1k
10k 100k
1M
FREQUENCY (Hz)
Figure 21. −3 dB Bandwidth @ Code = 0x80
10M
Rev. F | Page 10 of 20
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet AD5246.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AD524 | Precision Instrumentation Amplifier | Analog Devices |
| AD5240 | FAST/ COMPLETE 12-BIT A/D CONVERTERS | Analog Devices |
| AD5241 | 2-Channel/ 256-Position Digital Potentiometer | Analog Devices |
| AD5242 | 2-Channel/ 256-Position Digital Potentiometer | Analog Devices |
| 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 |