參數(shù)資料
型號： MAX197
廠商： Maxim Integrated Products, Inc.
英文描述： Multi-Range Single +5V, 12-Bit DAS with 8+4 Bus Interface(8通道,100ksps,并行,12位A/D轉(zhuǎn)換器)
中文描述： 多量程(±10V, ±5V, +10V, +5V)、單+5V、12位數(shù)DAS，8+4總線接口
文件頁數(shù)： 15/16頁
文件大小： 165K
代理商： MAX197
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
相關(guān)PDF資料
PDF描述
MAX197BCWI ECONOLINE: RJ & RG - Dual Output from a Single Input Rail - 3kVDC & 4kVDC Isolation - Optional Continuous Short Circuit Protected - Custom Solutions Available - UL94V-0 Package Material - Efficiency to 84%
MAX197AENI Multi-Range (【10V, 【5V, +10V, +5V), Single +5V, 12-Bit DAS with 8+4 Bus Interface
MAX197AEWI Multi-Range (【10V, 【5V, +10V, +5V), Single +5V, 12-Bit DAS with 8+4 Bus Interface
MAX197BCNI Multi-Range (【10V, 【5V, +10V, +5V), Single +5V, 12-Bit DAS with 8+4 Bus Interface
MAX197BENI Multi-Range (【10V, 【5V, +10V, +5V), Single +5V, 12-Bit DAS with 8+4 Bus Interface
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX19700ETM 功能描述:ADC / DAC多通道 RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-40
MAX19700ETM+ 功能描述:ADC / DAC多通道 7.5Msps CODEC/AFE 1.8/2.7-3.3V RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-40
MAX19700ETM+T 功能描述:ADC / DAC多通道 7.5Msps CODEC/AFE 1.8/2.7-3.3V RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-40
MAX19700ETM-T 功能描述:ADC / DAC多通道 RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-40
MAX19700EVCMOD2 功能描述:ADC / DAC多通道 Evaluation Kit/Evaluation System for the MAX19700 RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-40
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