Compact +30V/±15V 256-Position Digital
Potentiometer
Preliminary Technical Data
打呵呵AD5290
Rev. PrC
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rights of third parties that may result from its u. Specifications subject to change without notice. No licen is granted by implication One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
FEATURES
256-position
+2.7V to +30V Single Supply Operation ±2.7V to ±15V Dual Supply Operation
End-to-end resistance 10 kΩ, 50 kΩ, 100 kΩ Low temperature coefficient 35 ppm/°C Power-on pret to midscale SPI compatible interface
Automotive temperature range –40°C to +105°C Compact MSOP-10 (3 mm × 4.9 mm) package
APPLICATIONS
Programmable Gain and Offt Programmable Power Supply Industrial Actuator Control LED Array Driver
Audio Volume Control
General Purpo DAC Replacement
Mechanical Potentiometer Replacement
GENERAL OVERVIEW
The AD5290 is a low cost, compact 2.9 mm × 3 mm
+30V/±15V , 256-position digital potentiometer. This device performs the same electronic adjustment function as
mechanical potentiometers or variable resistors, with enhanced resolution, solid-state reliability, and superior low temperature coefficient performance.
The wiper ttings are controllable through an SPI compatible digital interface. 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.
The AD5290 is available in 10k, 50k, and 100k Ω in compact
MSOP-10 package. AD5290 can be operated from a single supply +2.7 V to +30 V or dual supply ±2.7 V to ±15 V . All parts are guaranteed to operate over the automotive temperature range of -40°C to +105°C.
FUNCTIONAL BLOCK DIAGRAM
A W
B SDO
SDI CS
DGND
诺基亚6681
CLK V SS
V DD
Figure 1.
Note:
The terms digital potentiometer and RDAC are ud interchangeably.
Preliminary Technical Data
AD5290
ELECTRICAL CHARACTERISTICS—10 kΩ, 50 kΩ, 100 kΩ VERSIONS (V DD /V SS = ±15V±10% or ±5V±10%, V A = +V DD , V B = V SS /0V, -40°C < T A < +105°C unless otherwi noted)
Table 1.
Parameter Symbol Conditions Min Typ 1 Max Unit DC CHARACTERISTICS—RHEOSTAT MODE Resistor Differential Nonlinearity 2 R-DNL R WB , V A = no connect –1 ±0.1 +1 LSB
Resistor Integral Nonlinearity 2
补气补血的十大补汤R-I
NL R WB , V A = no connect –2 ±0.25 +2 LSB Nominal Resistor Tolerance 3 ∆R AB T A = 25°C –30 +30 %
Resistance Temperature Coefficient (∆R AB /R AB )/∆T*106
V AB = V DD , Wiper = no connect
35 ppm/°C
Wiper Resistance R W V DD = 30 V 50 120 Ω V DD = 5 V 200 400 Ω DC CHARACTERISTICS—POTENTIOMETER DIVIDER MODE Resolution N 8 Bits
Differential Nonlinearity 4
DNL –1 ±0.1 +1 LSB I ntegral Nonlinearity 4 I NL
–1 ±0.3 +1 LSB Voltage Divider Temperature Coefficient (∆V W /V W )/∆T*106
Code = 0x80 5 ppm/°C Full-Scale Error V WFSE Code = 0xFF –3 –1 0 LSB Zero-Scale Error V WZSE Code = 0x00 0 1 3 LSB RESISTOR TERMINALS Voltage Range 5 V A,B,W V SS V DD V
Capacitance 6
A, B C A,B f = 1 MHz, measured to GND, Code = 0x80
45 pF Capacitance 6 W C W f = 1 MHz, measured to
GND, Code = 0x80
60 pF Common-Mode Leakage I CM V A = V B = V W 1 nA DIGITAL INPUTS AND OUTPUTS Input Logic High V IH V DD = +5V or +15V 2.4 V Input Logic Low V IL V DD = +5V or +15V 0.8 V Output Logic High V OH R L = 2.2 k Ω to +5 V
4.9
V
Output Logic Low V OL
感恩教育心得体会I OL = 1.6mA, V LOGIC = +5V,
V DD = +15V
0.4 V
I nput Current I I
V IN = 0 V or +15 V ±1 µA
I nput Capacitance C I 5 pF POWER SUPPLIES
Power Supply Range V DD /V SS Dual Supply Range ±2.7 ±16.5 V Power Supply Range V DD
Single Supply Range, V SS = 0 V
+2.7 +30 V Supply Current6 I
DD
V IH = 5 V or V IL = 0 V, V DD = +5 V
0.1 10 µA Supply Current I
DD
V IH = 5 V or V IL = 0 V, V DD = +15 V
0.75 2 mA Supply Current I SS
V IH = 5 V or V IL = 0 V, V SS = -5 V or –15 V
0.02 0.1 mA Power Dissipation 7 P DISS V IH = 5 V or V IL = 0 V, V DD = +15 V, V SS = -15 V
11
30 mW
Power Supply Sensitivity
PSS
∆V DD = +15V ±10%, or ∆V SS = -15V ±10%, Code = Midscale ±0.01 ±0.02 %/%
DYNAMIC CHARACTERISTICS 6, 8
Bandwidth –3dB BW中国姓
R AB = 10 kΩ/50 kΩ/100 kΩ, Code = 0x80
强说愁525/125/60 kHz
Preliminary Technical Data AD5290
0.05 % Total Harmonic Distortion THD W V A =1 V rms, V B = 0 V,
f = 1 kHz, R AB = 10 kΩ
4 µs
V W Settling Time (10 kΩ/50 kΩ/100 kΩ) t S V A = 5 V, V B = 0 V,
±1 LSB error band
Resistor Noi Voltage Density e N_WB R WB = 25 kΩ 14 nV/√Hz
Preliminary Technical Data AD5290
TIMING CHARACTERISTICS— 10 kΩ, 50 kΩ, 100 kΩ VERSIONS
(V DD/V SS = ±15V±10% or ±5V±10%, V A = +V DD, V B = 0V, -40°C < T A < +105°C unless otherwi noted.)
1.Typical specifications reprent average readings at +25°C and V DD = 5 V.
2.Resistor position nonlinearity error R-INL is the deviation from an ideal value measured between the maximum resistance and the minimum resistance wiper
positions. R-DNL measures the relative step change from ideal between successive tap positions. Parts are guaranteed monotonic.
3.V AB = V DD, Wiper (V W) = no connect.
4.INL and DNL are measured at V W with the RDAC configured as a potentiometer divider similar to
a voltage output D/A converter. V A=V DD and V B=0 V.
5.Resistor terminals A, B, W have no limitations on polarity with respect to each other.
6.Guaranteed by design and not subject to production test.
7.P DISS is calculated from (I DD × V DD+ I SS × V SS) CMOS logic level inputs result in minimum power dissipation.
8.All dynamic characteristics u V DD / V SS = ±5 V.
9.See timing diagram for location of measured values. All input control voltages are specified with t R = t F = 2 ns (10% to 90% of 3 V) and timed from a voltage level
of 1.5 V.
Preliminary Technical Data AD5290
ABSOLUTE MAXIMUM RATINGS1
(T A = +25°C, unless otherwi noted.)
Table 3.
Parameter Value
V DD to VSS –0.3 V to +33 V
V DD to GND –0.3 V to +33 V
V SS to GND +0.3 V to –16.5 V
V A, V B, V W to GND V SS , V DD
Maximum Current
I WB, I WA Puld
I WB Continuous (R WB ≤ 1kΩ, A open)1 I WA Continuous (R WA ≤ 1 kΩ, B open)1±20 mA ±5 mA ±5 mA
Digital Inputs Voltage to GND V DD + 0.3 V Digital Output Voltage to GND 0 V, +30 V Operating Temperature Range –40°C to +105°C Maximum Junction Temperature (T JMAX) 150°C Storage Te
浙江一本线mperature –65°C to +150°C Lead Temperature (Soldering, 10 – 30 c) 245°C
Thermal Resistance2 θJA: MSOP-10 230°C/W
NOTES
1 Maximum terminal current is bounded by the maximum current handling of the switches, maximum power dissipation of the package, and maximum applied voltage across any two of the A, B, and W terminals at a given resistance.
2 Package power dissipation = (T JMAX – T A)/θJA.
Stress above tho listed under Absolute Maximum Ratings may cau permanent damage to the device. This is a stress rating only and functional operation of the device at the or any other conditions above tho indicated in the operational ction of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
辣椒炒油渣
Preliminary Technical Data AD5290 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
A
B
GND
C S
Figure 2. AD5290 Pin Configuration
