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參數(shù)資料
| 型號(hào)： | MAX7428EKA+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 3/21頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC FILTER BUFFER VID SOT23-8 |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 視頻濾波器 |
| 應(yīng)用： | 錄音機(jī)，機(jī)頂盒 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SOT-23-8 |
| 供應(yīng)商設(shè)備封裝： | SOT-23-8 |
| 包裝： | 帶卷 (TR) |
MAX7428/MAX7430/MAX7432A
Standard Definition Video Reconstruction
Filters and Buffers
______________________________________________________________________________________
11
Applications Information
Maxim’s Single Pin Bus (MSPB)
Serial Interface
The MSPB interface uses three pulses of different
widths to represent commands and data bits. Figure 4
shows the set of pulses that the single pin interface
uses to communicate with the device. A combination of
the one pulse (t1), zero pulse (t0), transaction pulse (tT),
and prompt pulse (tP), writes to, reads back from, and
sends broadcast data to the devices on the bus.
Note: The zero pulse and prompt pulse are the same.
Initialization pulses are significantly longer and are
used only on power-up or software reset.
Initializing the
MAX7428/MAX7430/MAX7432A
Initialization is performed only after power-up or software
reset. It assigns a unique address to each device on the
bus. The time constant of the capacitor connected to
REXT in parallel with the 300k
Ω resistor determines the
order in which the devices are initialized (address
assigned). The device with the largest time constant is
initialized first and so on, in descending order. Table 7
shows the “Initialize Wait” and “Initialize Time” pulse
widths needed for a specific capacitor value and toler-
ance. Program each device on the bus with this com-
mand sequence starting with the device with the biggest
capacitor. To reinitialize a device, cycle the power or use
a software reset. The following is the command
sequence and timing diagram (Figure 5) for initialization
as shown below. Chip ID is entered LSB first.
Note: If there is only one device on the bus, no initial-
ization is needed. Communicate to the device using the
broadcast command described on page 13.
(MSB)
NAME
—
ABSEL3
BYPASS3
CLEVEL3
BOOST1(3)
BOOST0(3)
OUT
DISABLE3
—
DEFAULT
0
1
0
NAME
—
ABSEL2
BYPASS2
CLEVEL2
BOOST1(2)
BOOST0(2)
OUT
DISABLE2
—
DEFAULT
0
1
0
NAME
—
ABSEL1
BYPASS1
CLEVEL1
BOOST1(1)
BOOST0(1)
OUT
DISABLE1
—
DEFAULT
0
1
0
FIRST BIT
(LSB)
Table 5. MAX7432A Control Register
BOOST1_
BOOST0_
RELATIVE HIGH
FREQUENCY BOOST
00
0
1
0.3dB to 0.5dB
1
0
0.6dB to 1.0dB
1
0.9dB to 1.5dB
Table 6. Boost Level Programming
ZERO/PROMPT
PULSE
tP = t0 = 5
μs
t1 = 30
μs
t0
ONE PULSE
TRANSACTION
PULSE
t1
tT = 100
μs
tT
Figure 4. MSPB Interface Pulses
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| MAX7428EVC16 | 功能描述:有源濾波器 Programmers, Development Systems RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube |
| MAX7428EVKIT | 功能描述:有源濾波器 Programmers, Development Systems RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube |
| MAX742C/D | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MAX742C/D DIE | 制造商:Maxim Integrated Products 功能描述: |
| MAX742CPP | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Switch-Mode Regulator RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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