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參數(shù)資料
| 型號： | MAX197BEWI |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | Multi-Range (【10V, 【5V, +10V, +5V), Single +5V, 12-Bit DAS with 8+4 Bus Interface |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO28 |
| 封裝： | 0.300 INCH, SOIC-16 |
| 文件頁數(shù)： | 15/16頁 |
| 文件大?。?/td> | 165K |
| 代理商： | MAX197BEWI |
T ransfer Func tion
Output data coding for the MAX197 is binary in unipo-
lar mode with 1LSB = (FS / 4096) and twos-comple-
ment binary in bipolar mode with 1LSB = ((2 x
|
FS
|
) /
4096). Code transitions occur halfway between succes-
sive-integer LSB values. Figures 10 and 11 show the
input/output (I/O) transfer functions for unipolar and
bipolar operations, respectively. For full-scale (FS) val-
ues, refer to Table 1.
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. Digital
ground lines can run between digital signal lines to
minimize interference. Connect analog 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 impedance and as short as possi-
ble. 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 fluctua-
tions. If the supply is excessively noisy, connect a 5
resistor between the supply and V
DD
, as shown in
Figure 12.
M
Multi-Range (±10V, ±5V, +10V, +5V ),
S ingle +5V, 12-Bit DAS with 8+4 Bus Interfac e
______________________________________________________________________________________
15
_Ordering Information (c ontinued)
28 Narrow Ceramic SB**
-55°C to +125°C
MAX197BMYI
**
Contact factory for availability and processing to MIL-STD-883.
28 Narrow Ceramic SB**
-55°C to +125°C
MAX197AMYI
28 SSOP
-40°C to +85°C
MAX197BEAI
28 SSOP
-40°C to +85°C
MAX197AEAI
28 Wide SO
-40°C to +85°C
MAX197BEWI
28 Wide SO
28 Narrow Plastic DIP
28 Narrow Plastic DIP
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
MAX197AEWI
MAX197BENI
MAX197AENI
PIN-PACKAGE
TEMP. RANGE
PART
V
DD
GND
DGND
DGND
AGND
+5V
+5V
SUPPLY
R* = 5
DIGITAL
CIRCUITRY
4.7
μ
F
0.1
μ
F
** CONNECT AGND AND DGND WITH A GROUND PLANE OR A SHORT TRACE
MAX197
**
Figure 12. Power-Supply Grounding Connection
TRANSISTOR COUNT: 2956
SUBSTRATE CONNECTED TO GND
___________________Chip Topography
CH5
CH6
CH7
INT
REFADJ
0.231"
(5.870mm)
0.144"
(3.659mm)
D2
CH0
CH1
D0
D1
AGND
CH4
CH3
CH2
V
CC
V
DD
REF
DGND
CLK
WR
CS
RD
HBEN
SHDN
D7
D6
D5
D4
D3
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| MAX197ACNI | Multi-Range (【10V, 【5V, +10V, +5V), Single +5V, 12-Bit DAS with 8+4 Bus Interface |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX197BEWI+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 8Ch 100ksps 4.18V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX197BEWI+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 8Ch 100ksps 4.18V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX197BEWI-T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX197BMWI/PR | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Multi-Range ( 10V 5V +10V +5V) Single +5V 12-Bit DAS with 8+4 Bus Interface RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX197BMWI/PR-T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Multi-Range (110V 15V +10V +5V) Single +5V 12-Bit DAS with 8+4 Bus Interface RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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