- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383308 > MAX1062ACUB (MAXIM INTEGRATED PRODUCTS INC) 14-Bit, %V, 200ksps ADC with 10レA Shutdown PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX1062ACUB |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | ADC |
| 英文描述： | 14-Bit, %V, 200ksps ADC with 10レA Shutdown |
| 中文描述： | 1-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO10 |
| 封裝： | UMAX-10 |
| 文件頁(yè)數(shù)： | 10/17頁(yè) |
| 文件大?。?/td> | 377K |
| 代理商： | MAX1062ACUB |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)當(dāng)前第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)
M
Output Coding and
Transfer Function
The data output from the MAX1062 is binary and Figure
8 depicts the nominal transfer function. Code transitions
occur halfway between successive-integer LSB values
(V
REF
= 4.096V and 1LSB = 250μV or 4.096V/16384).
Applications Information
External Reference
The MAX1062 requires an external reference with a
voltage range between 3.8V and AV
DD
. Connect the
external reference directly to REF. Bypass REF to
AGND (pin 3) with a 4.7μF capacitor. When not using a
low ESR bypass capacitor, use a 0.1μF ceramic capac-
itor in parallel with the 4.7μF capacitor. Noise on the
reference degrades conversion accuracy.
The input impedance at REF is 40k
for DC currents.
During a conversion the external reference at REF must
deliver 100μA of DC load current and have an output
impedance of 10
or less.
For optimal performance, buffer the reference through
an op amp and bypass the REF input. Consider the
MAX1062
’
s equivalent input noise (80μV
RMS
) when
choosing a reference.
Input Buffer
Most applications require an input buffer amplifier to
achieve 14-bit accuracy. If the input signal is multi-
plexed, switch the input channel immediately after acqui-
sition, rather than near the end of or after a conversion
(Figure 9). This allows the maximum time for the input
buffer amplifier to respond to a large step change in the
input signal. The input amplifier must have a slew rate of
at least 2V/μs to complete the required output voltage
change before the beginning of the acquisition time.
At the beginning of the acquisition, the internal sampling
capacitor array connects to AIN (the amplifier output),
causing some output disturbance. Ensure that the sam-
pled voltage has settled before the end of the acquisition
time.
Digital Noise
Digital noise can couple to AIN and REF. The conver-
sion clock (SCLK) and other digital signals active dur-
ing input acquisition contribute noise to the conversion
result. Noise signals synchronous with the sampling
interval result in an effective input offset. Asynchronous
signals produce random noise on the input, whose
14-Bit, +5V, 200ksps ADC with 10μA Shutdown
10
______________________________________________________________________________________
COMPLETE CONVERSION SEQUENCE
CONVERSION 0
CONVERSION 1
POWERED UP
POWERED UP
POWERED DOWN
DOUT
CS
Figure 7. Shutdown Sequence
OUTPUT CODE
FULL-SCALE
TRANSITION
11
. . .
111
11
. . .
110
11
. . .
101
00
. . .
011
00
. . .
010
00
. . .
001
00
. . .
000
1
2
3
0
FS
FS - 3/2LSB
FS = V
REF
1LSB = V
REF
INPUT VOLTAGE (LSB)
16384
Figure 8. Unipolar Transfer Function, Full Scale (FS) = V
REF
,
Zero Scale (ZS) = GND
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1065ACUI | Low-Power, 14-Bit Analog-to-Digital Converters with Parallel Interface |
| MAX1065AEUI | Low-Power, 14-Bit Analog-to-Digital Converters with Parallel Interface |
| MAX1065BCUI | Low-Power, 14-Bit Analog-to-Digital Converters with Parallel Interface |
| MAX1065BEUI | Low-Power, 14-Bit Analog-to-Digital Converters with Parallel Interface |
| MAX1065CCUI | Low-Power, 14-Bit Analog-to-Digital Converters with Parallel Interface |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1062ACUB+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 5V 14-Bit 200ksp w/10uA Shutdown 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 |
| MAX1062ACUB+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 5V 14-Bit 200ksp w/10uA Shutdown 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 |
| MAX1062ACUB-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 |
| MAX1062AEUB | 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 |
| MAX1062AEUB+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 5V 14-Bit 200ksp w/10uA Shutdown 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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。