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參數(shù)資料
| 型號： | MAX127BCAI |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | Multirange, +5V, 12-Bit DAS with 2-Wire Serial Interface |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO28 |
| 封裝： | SSOP-28 |
| 文件頁數(shù)： | 15/16頁 |
| 文件大?。?/td> | 124K |
| 代理商： | MAX127BCAI |
T ransfer Func tion
Output data coding for the MAX127/MAX128 is binary
in unipolar mode with 1LSB = (FS/4096) and
two’s complement binary in bipolar mode with 1LSB =
[(2 x
|
FS
|
) /4096]. Code transitions occur halfway
between successive-integer LSB values. Figures 13a
and 13b show the input/output (I/O) transfer functions
for unipolar and bipolar operations, respectively. For
full-scale (FS) values, refer to Table 3.
Layout, Grounding, and Bypassing
Careful printed circuit board layout is essential for best
system performance. For best performance, use a
ground plane. To reduce crosstalk and noise injection,
keep analog and digital signals separate. Connect ana-
log grounds and DGND in a star configuration to
AGND. For noise-free operation, ensure the ground
return from AGND to the supply ground is low imped-
ance and as short as possible. Connect the logic
grounds directly to the supply ground. Bypass V
DD
with
0.1μF and 4.7μF capacitors to AGND to minimize high-
and low-frequency fluctuations. If the supply is exces-
sively noisy, connect a 5
resistor between the supply
and V
DD
, as shown in Figure 14.
M
Multirange, +5V, 12-Bit DAS with
2-Wire S erial Interfac e
______________________________________________________________________________________
15
OUTPUT CODE
INPUT VOLTAGE (LSB)
0
FS
FS -
3
/
2
LSB
1 LSB =
FULL-SCALE
TRANSITION
1
2
3
11... 111
11... 110
11... 101
00... 011
00... 010
00... 001
00... 000
FS
4096
Figure 13a. Unipolar Transfer Function
OUTPUT CODE
INPUT VOLTAGE (LSB)
0
+FS - 1 LSB
1 LSB =
-FS
011... 111
011... 110
000... 001
000... 000
111... 111
100... 010
100... 001
100... 000
2
FS
4096
Figure 13b. Bipolar Transfer Function
V
DD
GND
DGND
DGND
AGND
+5V
+5V
SUPPLY
R* = 5
DIGITAL
CIRCUITRY
4.7
μ
F
0.1
μ
F
MAX127
MAX128
**
* OPTIONAL
** CONNECT AGND AND DGND WITH A GROUND PLANE OR A SHORT TRACE.
Figure 14. Power-Supply Grounding Connection
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PDF描述 |
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| MAX128ACAI | Multirange, +5V, 12-Bit DAS with 2-Wire Serial Interface |
| MAX128ACNG | Multirange, +5V, 12-Bit DAS with 2-Wire Serial Interface |
| MAX128BCAI | Multirange, +5V, 12-Bit DAS with 2-Wire Serial Interface |
| MAX128AENG | Circular Connector; No. of Contacts:15; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:15; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:15-15 RoHS Compliant: No |
| MAX127BEAI | Multirange, +5V, 12-Bit DAS with 2-Wire Serial Interface |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX127BCAI+ | 功能描述:數(shù)據(jù)轉(zhuǎn)換系統(tǒng) 12-Bit 8Ch 8ksps 4.18V Precision ADC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率:0.001 MSPs 分辨率:24 bit 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX127BCAI+ | 制造商:Maxim Integrated Products 功能描述:CONVERTOR AD ((NW)) |
| MAX127BCAI+T | 功能描述:數(shù)據(jù)轉(zhuǎn)換系統(tǒng) 12-Bit 8Ch 8ksps 4.18V Precision ADC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率:0.001 MSPs 分辨率:24 bit 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX127BCAI-T | 功能描述:數(shù)據(jù)轉(zhuǎn)換系統(tǒng) RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率:0.001 MSPs 分辨率:24 bit 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX127BCNG | 功能描述:數(shù)據(jù)轉(zhuǎn)換系統(tǒng) RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率:0.001 MSPs 分辨率:24 bit 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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