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參數(shù)資料
| 型號： | MAX1496EPI |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | ADC |
| 英文描述： | 3.5- and 4.5-Digit, Single-Chip ADCs with LED Drivers |
| 中文描述： | 1-CH PROPRIETARY METHOD ADC, PDIP28 |
| 封裝： | 0.600 MM, PLASTIC, MS-011, DIP-28 |
| 文件頁數(shù)： | 12/24頁 |
| 文件大?。?/td> | 907K |
| 代理商： | MAX1496EPI |
M
3.5- and 4.5-Digit, Single-Chip ADCs
with LED Drivers
12
______________________________________________________________________________________
Filter Characteristics
Figure 2 shows the filter frequency response. The
SINC
4
characteristic -3dB cutoff frequency is 0.228
times the first notch frequency (5Hz). The oversampling
ratio (OSR) for the MAX1496 is 128 and the OSR for the
MAX1447/MAX1498 is 1024.
The output data rate for the digital filter corresponds to
the positioning of the first notch of the filter’s frequency
response. The notches of the SINC
4
filter are repeated
at multiples of the first notch frequency. The SINC
4
filter
provides an attenuation of better than 100dB at these
notches. For example, 50Hz is equal to 10 times the
first notch frequency and 60Hz is equal to 12 times the
first notch frequency.
For large step changes at the input, allow a settling
time of 800ms before valid data is read.
Internal Clock
The MAX1447/MAX1496/MAX1498 contain an internal
oscillator. Using the internal oscillator saves board
space by removing the need for an external clock
source. The oscillator is optimized to give 50Hz and
60Hz power-supply and common-mode rejection.
Charge Pump
The MAX1447/MAX1496/MAX1498 contain an internal
charge pump to provide the negative supply voltage
for the internal analog input/reference buffers.
The bipolar input range of the analog input/reference
buffers allows this device to accept negative inputs
with high source impedances. Connect a 0.1μF capac-
itor from VNEG to GND.
LED Driver
The MAX1447/MAX1498 have a 4.5-digit common-cath-
ode display driver, and the MAX1496 has a 3.5-digit
common-cathode display driver. Figures 3 and 4 show
the connection schemes for a standard seven-segment
LED display. The LED update rate is 2.5Hz. The
MAX1447/MAX1496/MAX1498 automatically display the
results of the ADC, if desired (Table 1).
A
B
C
A
A
A
A
D
DIGIT 4
DIGIT 3
DIGIT 2
DIGIT 1
DIGIT 0
D
D
D
D
E
G
F
E
E
E
G
G
G
G
F
F
F
F
B
B
B
B
C
C
C
C
DP
DP
DP
DP
DP
Figure 3. Segment Connection for the MAX1447/MAX1498
(4.5 Digits)
A
B
A
A
A
D
DIGIT 3
DIGIT 2
DIGIT 1
DIGIT 0
D
D
D
E
G
F
E
E
G
G
G
F
F
F
B
B
B
C
C
C
DP
DP
DP
DP
C
Figure 4. Segment Connection for the MAX1496 (3.5 Digits)
HOLD
1
0
0
PEAK
X
1
0
DISPLAY VALUES FORM
Hold value
Peak value
Latest ADC result
Table 1. LED Priority Table
X
= Don’t care.
FREQUENCY (Hz)
G
50
40
30
20
10
-160
-120
-80
-40
0
-200
0
60
Figure 2. Frequency Response of the SINC
4
Filter (Notch at 50Hz
and 60Hz)
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參數(shù)描述 |
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| MAX1496EPI+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 3.5 Digit ADC w/LED Drivers 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 |
| MAX14970ETP+ | 制造商:Maxim Integrated Products 功能描述:RUGGEDIZED SATA 6GBPS REDRIVER WITH HIGH ESD AND EXTENDED TE - Rail/Tube 制造商:Maxim Integrated Products 功能描述:IC REDRIVER RUGGED 6GBPS QFN 制造商:Maxim Integrated Products 功能描述:Equalizers ruggedized sata 6gbp s redriver with high |
| MAX14970ETP+T | 制造商:Maxim Integrated Products 功能描述:RUGGEDIZED SATA 6GBPS REDRIVER WITH HIGH ESD AND EXTENDED TE - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC REDRIVER SATA GEN 3 QFN 制造商:Maxim Integrated Products 功能描述:ruggedized sata 6gbp s redriver with high |
| MAX14970EVKIT# | 制造商:Maxim Integrated Products 功能描述:EVALUATION KIT FOR MAX14970. RUGGEDIZED SATA 6GBPS REDRIVER - Boxed Product (Development Kits) 制造商:Maxim Integrated Products 功能描述:KIT EVALUATION FOR MAX14970 制造商:Maxim Integrated Products 功能描述:Equalizers MAX14970 Eval Kit |
| MAX14972CTG+ | 功能描述:USB 接口集成電路 Dual USB 3.0 Re-Driver RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
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