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参数资料
| 型号： | MAX5395MATA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/17页 |
| 文件大小： | 0K |
| 描述： | IC DGTL POT 256POS 50KOHM 8TDFN |
| 标准包装： | 2,500 |
| 接片： | 256 |
| 电阻（欧姆）： | 50k |
| 电路数： | 1 |
| 温度系数： | 标准值 50 ppm/°C |
| 存储器类型： | 易失 |
| 接口： | I²C |
| 电源电压： | 1.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | * |
| 封装/外壳： | * |
| 供应商设备封装： | * |
| 包装： | * |
11
Maxim Integrated
MAX5395
Single, 256-Tap Volatile, I2C, Low-Voltage Linear
Taper Digital Potentiometer
Figure 2. I2C Timing Diagram
I2C START and STOP Conditions
SDA and SCL idle high when the bus is not in use. A mas-
ter initiates communication by issuing a START condition.
A START condition is a high-to-low transition on SDA with
SCL high. A STOP condition is a low-to-high transition
on SDA while SCL is high (Figure 2). A START condition
from the master signals the beginning of a transmission
to the MAX5395. The master terminates transmission
and frees the bus, by issuing a STOP condition. The bus
remains active if a Repeated START condition is gener-
ated instead of a STOP condition.
I2C Early STOP and Repeated START Conditions
The MAX5395 recognizes a STOP condition at any point
during data transmission except if the STOP condition
occurs in the same high pulse as a START condition.
For proper operation, do not send a STOP condition dur-
ing the same SCL high pulse as the START condition.
Transmissions ending in an early STOP condition will not
impact the internal device settings. If the STOP occurs
during a readback byte, the transmission is terminated
and a later read mode request will begin transfer of the
requested register data from the beginning. See Figure 3.
It is possible to interrupt a transmission to a MAX5395
with a new START (Repeated START) condition (perhaps
addressing another device), which leaves the input regis-
ters with data that has not been transferred to the internal
registers. The unused data will not be stored under these
conditions. The aborted MAX5395 I2C sequence will
have no effect on the part.
I2C Acknowledge
In write mode, the acknowledge bit (ACK) is a clocked
9th bit that the MAX5395 uses to handshake receipt of
each byte of data as shown in Figure 4. The MAX5395
pulls down SDA during the entire master-generated 9th
clock pulse if the previous byte is successfully received.
Monitoring ACK allows for detection of unsuccessful
data transfers. An unsuccessful data transfer occurs if a
receiving device is busy or if a system fault has occurred.
In the event of an unsuccessful data transfer, the bus
master will retry communication.
Figure 3. I2C START(s), Repeated START(S), and STOP(S) Conditions
SDA
SCL
START
CONDITION
(S)
tLOW
tBUF
tHIGH
tHD:STA
tSU:DAT
tR
tF
tSU:STD
REPEATED
START CONDITION
(Sr)
ACKNOWLEDGE (A)
STOP CONDITION
(P)
START CONDITION
(S)
tHD-DAT
tSU:DTA
SCL
SDA
SSrP
VALID START, REPEATED START, AND STOP PULSES
PS
P
SP
P
S
INVALID START/STOP PULSE PAIRINGS-ALL WILL BE RECOGNIZED AS STARTS
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相关代理商/技术参数 |
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| MAX5395NATA+T | 功能描述:数字电位计 IC Sgl 256-tap Volatile DigiPot w/SPI RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| MAX539ACPA | 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MAX539ACPA+ | 功能描述:数模转换器- DAC 12-Bit Precision DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MAX539ACSA | 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MAX539ACSA+ | 功能描述:数模转换器- DAC 12-Bit Precision DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
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