- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383443 > MAX5842 (Maxim Integrated Products, Inc.) 4-Bit Magnitude Comparators 16-CDIP -55 to 125 PDF資料下載
參數(shù)資料
| 型號： | MAX5842 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 4-Bit Magnitude Comparators 16-CDIP -55 to 125 |
| 中文描述： | 四路、12位、低功耗、２線、串行電壓輸出DAC |
| 文件頁數(shù)： | 9/15頁 |
| 文件大小： | 462K |
| 代理商： | MAX5842 |
M
Quad, 12-Bit, Low-Power, 2-Wire, Serial
Voltage-Output DAC
_______________________________________________________________________________________
9
by a START (S) or REPEATED START (S
r
) condition and
a STOP (P) condition. Each word transmitted over the
bus is 8 bits long and is always followed by an
acknowledge clock pulse.
The MAX5842 SDA and SCL drivers are open-drain
outputs, requiring a pullup resistor to generate a logic
high voltage (see
Typical Operating Circuit)
. Series
resistors R
S
are optional. These series resistors protect
the input stages of the MAX5842 from high-voltage
spikes on the bus lines, and minimize crosstalk and
undershoot of the bus signals.
Bit Transfer
One data bit is transferred during each SCL clock
cycle. The data on SDA must remain stable during the
high period of the SCL clock pulse. Changes in SDA
while SCL is high are control signals (see
START and
STOP Conditions)
. Both SDA and SCL idle high when
the I
2
C bus is not busy.
START and STOP Conditions
When the serial interface is inactive, SDA and SCL idle
high. A master device initiates communication by issu-
ing 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 MAX5842. The
master terminates transmission by issuing a not
acknowledge followed by a STOP condition (see
Acknowledge Bit (ACK
)). The STOP condition frees the
bus. If a repeated START condition (Sr) is generated
instead of a STOP condition, the bus remains active.
When a STOP condition or incorrect address is detect-
ed, the MAX5842 internally disconnects SCL from the
serial interface until the next START condition, minimiz-
ing digital noise and feedthrough.
Early STOP Conditions
The MAX5842 recognizes a STOP condition at any
point during transmission except if a STOP condition
occurs in the same high pulse as a START condition
(Figure 3). This condition is not a legal I
2
C format; at
least one clock pulse must separate any START and
STOP conditions.
Repeated START Conditions
A REPEATED START (S
r
) condition may indicate a
change of data direction on the bus. Such a change
occurs when a command word is required to initiate a
read operation. S
r
may also be used when the bus
master is writing to several I
2
C devices and does not
want to relinquish control of the bus. The MAX5842 ser-
ial interface supports continuous write operations with
or without an S
r
condition separating them. Continuous
POWER-DOWN
COMMAND BITS
PD1
PD0
MODE/FUNCTION
0
0
Power-up device. DAC output
restored to previous value.
0
1
Power-down mode 0. Power down
device with output floating.
1
0
Power-down mode 1. Power down
device with output terminated with
1k
to GND.
1
1
Power-down mode 2. Power down
device with output terminated with
100k
to GND.
Table 1. Power-Down Command Bits
SCL
SDA
STOP
CONDITION
START
CONDITION
REPEATED START CONDITION
START CONDITION
t
LOW
t
SU, DAT
t
SU, STA
t
SP
t
BUF
t
HD, STA
t
SU, STO
t
R
t
F
t
HD, STA
t
HIGH
t
HD, DAT
Figure 1. 2-Wire Serial Interface Timing Diagram
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX5842LEUB | Quad, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC |
| MAX5858AEVKIT | Evaluation Kit for the MAX5858A/MAX5858/MAX5856A |
| MAX5865EVKIT | Evaluation Kit for the MAX5865 |
| MAX5866 | Ultra-Low-Power. High-Dynamic-Performance. 60Msps Analog Front End |
| MAX5885EVKIT | Evaluation Kit for the MAX5883/MAX5884/MAX5885 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5842EUB | 制造商:Maxim Integrated Products 功能描述:QUAD, 12-BIT, LOW-POWER, 2-WIRE, SERIAL VOLTA - Rail/Tube |
| MAX5842LEUB | 功能描述:數(shù)模轉(zhuǎn)換器- DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX5842LEUB+ | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 12-Bit 4Ch Precision DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX5842LEUB+T | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 12-Bit 4Ch Precision DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX5842LEUB-T | 功能描述:數(shù)模轉(zhuǎn)換器- DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。