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參數(shù)資料
| 型號(hào)： | DS1854E-050 |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 20/22頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC RES TEMP-CNTRL 50/50K 16TSSOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 96 |
| 接片： | 256 |
| 電阻（歐姆）： | 50k |
| 電路數(shù)： | 2 |
| 溫度系數(shù)： | 標(biāo)準(zhǔn)值 50 ppm/°C |
| 存儲(chǔ)器類型： | 非易失 |
| 接口： | I²C（設(shè)備位址） |
| 電源電壓： | 3 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 95°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-TSSOP |
| 包裝： | 管件 |
DS1854
Dual Temperature-Controlled
Resistors with Two Monitors
_____________________________________________________________________
7
Detailed Description
The user can read the registers that monitor the VCC,
MON1, MON2, and temperature analog signals. After
each signal conversion, a corresponding bit is set that
can be monitored to verify that a conversion has
occurred. The signals also have alarm flags that notify
the user when the signals go above or below the user-
defined value. Interrupts can also be set for each signal.
The position values of each resistor can be indepen-
dently programmed. The user can assign a unique
value to each resistor for every 2°C increment over the
-40°C to +102°C range. Both resistors can also be put
in a high-impedance mode using the RHIZ pin.
Two buffers are provided to convert logic-level inputs
into open-drain outputs. Typically these buffers are
used to implement transmit (Tx) fault and loss-of-signal
(LOS) alarms. Additionally, OUT1 can be asserted in
the event that one or more of the monitored values go
beyond user-defined limits.
PIN
BALL
NAME
FUNCTION
1B2
SDA
2-Wire Serial Data I/O pin. This pin is for serial data transfer to and from the device.
2A2
SCL
2-Wire Serial Clock Input. The serial clock input is used to clock data into and out of the device.
3C3
OUT1
Open-Drain Buffer Output
4A1
IN1
TTL/CMOS-Compatible Input to Buffer
5B1
OUT2
Open-Drain Buffer Output
6C2
IN2
TTL/CMOS-Compatible Input to Buffer
7C1
WPEN
Write Protect Enable. The device is not write protected if WPEN is connected to ground. This pin has
an internal pullup (RWPEN). See Table 6.
8D1
GND
Ground
9D3
RHIZ
Resistor Disable Input. When high, this signal places both resistors in an off-state or high-impedance
mode. When low, the resistors are on. This pin has an internal pullup (RRHIZ).
10
D4
MON1
External Analog Input
11
C4
MON2
External Analog Input
12
D2
L0
Low-End Resistor 0 Terminal. It is not required that the low-end terminals be connected to a potential
less than the high-end terminals of the corresponding resistor. Voltage applied to any of the resistor
terminals cannot exceed the power-supply voltage, VCC, or go below ground.
13
B3
H0
High-End Resistor 0 Terminal. It is not required that the high-end terminals be connected to a
potential greater than the low-end terminals of the corresponding resistor. Voltage applied to any of
the resistor terminals cannot exceed the power-supply voltage, VCC, or go below ground.
14
B4
L1
Low-End Resistor 1 Terminal
15
A4
H1
High-End Resistor 1 Terminal
16
A3
VCC
Supply Voltage
Pin Descriptions
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| DS1855 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Dual Nonvolatile Digital Potentiometer and Secure Memory |
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| DS1855B-010/T&R | 制造商:Maxim Integrated Products 功能描述:IC RES TEMP-CNTRL 10/10K 16BGA |
| DS1855B-010/T&R | 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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