參數(shù)資料
型號： MAX197AEAI+
廠商： Maxim Integrated Products
文件頁數(shù)： 7/16頁
文件大?。?/td> 0K
描述： IC DAS 12BIT SNGL 28-SSOP
產品培訓模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝： 46
類型： 數(shù)據(jù)采集系統(tǒng)（DAS）
分辨率（位）： 12 b
采樣率（每秒）： 100k
數(shù)據(jù)接口： 并聯(lián)
電壓電源： 單電源
電源電壓： 4.75 V ~ 5.25 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 28-SSOP（0.209"，5.30mm 寬）
供應商設備封裝： 28-SSOP
包裝： 管件
Transfer Function
Output data coding for the MAX197 is binary in unipo-
lar mode with 1LSB = (FS / 4096) and two’s-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, see 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 VDD with 0.1F and 4.7F 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 VDD, as shown in
Figure 12.
MAX197
Multi-Range (±10V, ±5V, +10V, +5V),
Single +5V, 12-Bit DAS with 8+4 Bus Interface
______________________________________________________________________________________
15
_Ordering Information (continued)
28 Narrow Ceramic SB**
-55°C to +125°C
MAX197BMYI
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
-40°C to +85°C
MAX197AEWI
MAX197BENI
MAX197AENI
PIN-PACKAGE
TEMP RANGE
PART
VDD
GND
DGND
AGND
+5V
SUPPLY
R* = 5
DIGITAL
CIRCUITRY
4.7
F
0.1
F
MAX197
**
* OPTIONAL
** CONNECT AGND AND DGND WITH A GROUND PLANE OR A SHORT TRACE
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
VCC
VDD
REF
DGND
CLK
WR
CS
RD
HBEN
SHDN
D7
D6
D5
D4
D3
** Contact factory for availability and processing to MIL-STD-883.
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參數(shù)描述
MAX197AEAI+ 功能描述:模數(shù)轉換器 - ADC 12-Bit 8Ch 100ksps 4.18V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX197AEAI+T 功能描述:模數(shù)轉換器 - ADC 12-Bit 8Ch 100ksps 4.18V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX197AEAI-T 功能描述:模數(shù)轉換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX197AENI 功能描述:模數(shù)轉換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX197AENI+ 功能描述:模數(shù)轉換器 - ADC 12-Bit 8Ch 100ksps 4.18V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
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