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| 型號： | AD5172BRM50-RL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 數(shù)字電位計 |
| 英文描述： | Dual, 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers |
| 中文描述： | DUAL 50K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO10 |
| 封裝： | 3 X 4.90 MM, MO-187BA, MSOP-10 |
| 文件頁數(shù)： | 3/24頁 |
| 文件大?。?/td> | 948K |
| 代理商： | AD5172BRM50-RL7 |
AD5172/AD5173
ELECTRICAL CHARACTERISTICS—2.5 k
Table 1. V
DD
= 5 V ± 10% or 3 V ± 10%; V
A
= +V
DD
; V
B
= 0 V; –40°C < T
A
< +125°C; unless otherwise noted
Parameter
Symbol
DC CHARACTERISTICS—RHEOSTAT MODE
Resistor Differential Nonlinearity
2
R-DNL
Resistor Integral Nonlinearity
2
R-INL
Nominal Resistor Tolerance
3
R
AB
Resistance Temperature Coefficient
(R
AB
/R
AB
)/T
RWB (Wiper Resistance)
R
WB
DC CHARACTERISTICS—POTENTIOMETER DIVIDER MODE (Specifications Apply to all VRs)
Differential Nonlinearity
4
DNL
Integral Nonlinearity
4
INL
Voltage Divider Temperature
Coefficient
Full-Scale Error
V
WFSE
Zero-Scale Error
V
WZSE
RESISTOR TERMINALS
Voltage Range
5
V
A
, V
B
, V
W
Capacitance
6
A, B
C
A
, C
B
Rev. A | Page 3 of 24
Conditions
R
WB
, V
A
= No Connect
R
WB
, V
A
= No Connect
T
A
= 25°C
V
AB
= V
DD
, Wiper = No Connect
Code = 0x00, V
DD
= 5 V
Min
–2
–6
–20
–1.5
–2
Typ
1
±0.1
±0.75
35
160
±0.1
±0.6
15
Max
+2
+6
+55
200
+1.5
+2
Unit
LSB
LSB
%
ppm/°C
LSB
LSB
ppm/°C
Code = 0x80
(V
W
/V
W
)/T
Code = 0xFF
Code = 0x00
f = 1 MHz, Measured to GND,
Code = 0x80
f = 1 MHz, Measured to GND,
Code = 0x80
V
DD
= 5.5 V
V
A
= V
B
= V
DD
/2
V
DD
= 5 V
V
DD
= 5 V
V
DD
= 3 V
V
DD
= 3 V
V
IN
= 0 V or 5 V
T
A
= 25°C
V
IH
= 5 V or V
IL
= 0 V
V
DD_OTP
= 6 V, T
A
= 25°C
V
IH
= 5 V or V
IL
= 0 V, V
DD
= 5 V
V
DD
= 5 V ± 10%, Code = Midscale
Code = 0x80
V
A
= 1 V rms, V
B
= 0 V, f = 1 kHz
V
A
= 5 V, V
B
= 0 V, ±1 LSB Error Band
R
WB
= 1.25 k, R
S
= 0
–10
0
GND
–2.5
2
45
0
10
V
DD
LSB
LSB
V
pF
Capacitance W
C
W
60
pF
Shutdown Supply Current
7
Common-Mode Leakage
DIGITAL INPUTS AND OUTPUTS
Input Logic High
Input Logic Low
Input Logic High
Input Logic Low
Input Current
Input Capacitance
6
POWER SUPPLIES
Power Supply Range
OTP Supply Voltage
Supply Current
OTP Supply Current
Power Dissipation
8
Power Supply Sensitivity
DYNAMIC CHARACTERISTICS
9
Bandwidth –3 dB
Total Harmonic Distortion
V
W
Settling Time
Resistor Noise Voltage Density
1
Typical specifications represent 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 VW 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. DNL
specification limits of ±1 LSB maximum are guaranteed monotonic operating conditions.
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
Measured at the A terminal. The A terminal is open circuited in shutdown mode.
8
P
DISS
is calculated from (I
DD
× V
DD
). CMOS logic level inputs result in minimum power dissipation.
9
All dynamic characteristics use V
DD
= 5 V.
I
A_SD
I
CM
V
IH
V
IL
V
IH
V
IL
I
IL
C
IL
V
DD RANGE
V
DD_OTP
I
DD
I
DD_OTP
P
DISS
PSS
BW_2.5K
THD
W
t
S
e
N_WB
2.4
2.1
2.7
6
100
0.01
1
5
3.5
±0.02
4.8
0.1
1
3.2
1
0.8
0.6
±1
5.5
6.5
6
30
±0.08
μA
nA
V
V
V
V
μA
pF
V
V
μA
mA
μW
%/%
MHz
%
μs
nV/√Hz
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