參數(shù)資料
型號(hào)： MAX1498ECJ+
廠(chǎng)商： Maxim Integrated Products
文件頁(yè)數(shù)： 9/24頁(yè)
文件大?。?/td> 0K
描述： IC ADC 4 1/2DIG W/LED DVR 32TQFP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 250
位數(shù)： 4.5 位
采樣率（每秒）： 5
轉(zhuǎn)換器數(shù)目： 1
功率耗散（最大）： 1.65W
電壓電源： 模擬和數(shù)字
工作溫度： -40°C ~ 85°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 32-LQFP
供應(yīng)商設(shè)備封裝： 32-LQFP（7x7）
包裝： 托盤(pán)
輸入數(shù)目和類(lèi)型： 1 個(gè)差分，雙極
MAX1447/MAX1496/MAX1498
3.5- and 4.5-Digit, Single-Chip ADCs
with LED Drivers
______________________________________________________________________________________
17
The transfer function for the MAX1496 with AIN+ - AIN-
≥ 0, RANGE = GND is:
The transfer function for the MAX1496 with AIN+ - AIN-
< 0, RANGE = GND is:
The transfer function for the MAX1496 with AIN+ - AIN-
≥ 0, RANGE = VDD is:
The transfer function for the MAX1496 with AIN+ - AIN-
< 0, RANGE = VDD is:
Supplies, Layout, and Bypassing
Power up AVDD and DVDD (MAX1447/MAX1498) and
VDD (MAX1496) before applying an analog input and
external-reference voltage to the device. If this is not
possible, limit the current into these inputs to 50mA.
When the analog and digital supplies come from the
same source, isolate the digital supply from the analog
supply with a low-value resistor (10
) or ferrite bead.
For best performance, ground the MAX1447/
MAX1496/MAX1498 to the analog ground plane of the
circuit board.
Avoid running digital lines under the device as this can
couple noise onto the IC. Run the analog ground plane
under the MAX1447/MAX1496/MAX1498 to minimize
coupling of digital noise. Make the power-supply lines
to the MAX1447/MAX1496/MAX1498 as wide as possi-
ble to provide low-impedance paths and reduce the
effects of glitches on the power-supply line.
Shield fast-switching signals, such as clocks, with digital
ground to avoid radiating noise to other sections of the
board. Avoid running clock signals near the analog
inputs. Avoid crossover of digital and analog signals.
Running traces that are on opposite sides of the board at
right angles to each other reduces feedthrough effects.
Good decoupling is important when using high-resolution
ADCs. Decouple the supplies with 0.1F ceramic capaci-
tors to GND. Place these components as close to the
device as possible to achieve the best decoupling.
COUNT
VV
AIN
REF
.
=×
×+
+
1 024
2000
10
1
COUNT
VV
AIN
REF
.
=×
×
+
1 024
2000
10
COUNT
VV
AIN
REF
.
=×
+
1 024
2000
1
COUNT
VV
AIN
REF
.
=×
+
1 024
2000
-200mV
0
ANALOG INPUT VOLTAGE
+200mV
-100
V 100V
LED
1 - - -
1999
2
1
0
- 0
- 1
- 2
-1999
- 1 - - -
Figure 12. MAX1496 Transfer Function, ±200mV Range
-2V
0
ANALOG INPUT VOLTAGE
+2V
-1mV
1mV
LED
1 - - -
1999
2
1
0
- 0
- 1
- 2
-1999
- 1 - - -
Figure 13. MAX1496 Transfer Function, ±2V Range
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1498ECJ+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 4.5 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
MAX1498ECJ+T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 4.5 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
MAX1498ECJ-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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
MAX14998ETO+ 功能描述:模擬開(kāi)關(guān) IC 4Ch DisplayPort MUX RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)數(shù)量:2 開(kāi)關(guān)配置:SPDT 開(kāi)啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開(kāi)啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16
MAX14998ETO+T 功能描述:模擬開(kāi)關(guān) IC 4Ch DisplayPort MUX RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)數(shù)量:2 開(kāi)關(guān)配置:SPDT 開(kāi)啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開(kāi)啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16
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