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參數(shù)資料
| 型號(hào)： | MAX5422 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 通用總線功能 |
| 英文描述： | 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers |
| 中文描述： | 四2輸入與門 |
| 文件頁(yè)數(shù)： | 4/11頁(yè) |
| 文件大小： | 614K |
| 代理商： | MAX5422 |
DNL vs. TAP POSITION
M
TAP POSITION
D
224
192
128
160
64
96
32
-0.20
-0.15
-0.10
-0.05
0
0.05
0.10
0.15
0.20
0.25
-0.25
0
256
VOLTAGE-DIVIDER MODE
INL vs. TAP POSITION
M
TAP POSITION
I
224
192
128
160
64
96
32
-0.20
-0.15
-0.10
-0.05
0
0.05
0.10
0.15
0.20
0.25
-0.25
0
256
VOLTAGE-DIVIDER MODE
R
)
100
200
300
400
500
600
700
0
WIPER RESISTANCE vs. TAP POSITION
M
TAP POSITION
224
192
128
160
64
96
32
0
256
V
DD
= 2.7V
I
SRC
= 50
μ
A
Typical Operating Characteristics
(V
DD
= 5.0V, T
A
= +25
°
C, unless otherwise noted.)
M
256-Tap, Nonvolatile, SPI-Interface,
Digital Potentiometers
4
_______________________________________________________________________________________
TIMING CHARACTERISTICS (continued)
(V
DD
= +2.7V to +5.25V, H = V
DD
, L = GND, T
A
= -40
°
C to +85
°
C. Typical values are at V
DD
= +5.0V, T
A
= +25
°
C, unless otherwise
noted. See Figure 1.) (Note 7)
PARAMETER
SYMBOL
t
DH
t
CS0
t
CS1
t
CSW
t
BUSY
CONDITIONS
MIN
0
20
80
200
TYP
MAX
UNITS
ns
ns
ns
ns
ms
DIN Hold after SCLK
SCLK Rise to
CS
Fall Delay
CS
Rise to SCLK Rise Hold
CS
Pulse-Width High
Write NV Register Busy Time
12
Note 1:
The DNL and INL are measured with the potentiometer configured as a voltage-divider with H = V
DD
and L = GND. The
wiper terminal is unloaded and measured with a high-input-impedance voltmeter.
Note 2:
The DNL and INL are measured with the potentiometer configured as a variable resistor. H is unconnected and L = GND.
For the 5V condition, the wiper terminal is driven with a source current of 80μA for the 50k
configuration, 40μA for the
100k
configuration, and 20μA for the 200k
configuration. For the 3V condition, the wiper terminal is driven with a source
current of 40μA for the 50k
configuration, 20μA for the 100k
, and 10μA for the 200k
configuration.
Note 3:
The wiper resistance is measured using the source currents given in Note 2. For operation to V
DD
= 2.7V, see Maximum
Wiper Resistance vs. Temperature in the
Typical Operating Characteristics
.
Note 4:
The device draws higher supply current when the digital inputs are driven with voltages between (V
DD
- 0.5V) and (GND +
0.5V). See Supply Current vs. Digital Input Voltage in the
Typical Operating Characteristics
.
Note 5:
Wiper at midscale with a 10pF load (DC measurement). L = GND; an AC source is applied to H; and the W output is mea-
sured. A 3dB bandwidth occurs when the AC W/H value is 3dB lower than the DC W/H value.
Note 6:
The programming current operates only during power-up and NV writes.
Note 7:
Digital timing is guaranteed by design and characterization, and is not production tested.
Note 8:
Wiper-settling time is the worst-case 0% to 50% rise-time measured between consecutive wiper positions. H = V
DD
, L =
GND, and the wiper terminal is unloaded and measured with a 10pF oscilloscope probe.
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| MAX5422ETA-T | 功能描述:數(shù)字電位計(jì) IC RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
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