- 您現(xiàn)在的位置：買賣IC網 > PDF目錄383317 > MAX1271ACNG (MAXIM INTEGRATED PRODUCTS INC) Multirange, +5V, 8-Channel, Serial 12-Bit ADCs PDF資料下載
參數(shù)資料
| 型號： | MAX1271ACNG |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | ADC |
| 英文描述： | Multirange, +5V, 8-Channel, Serial 12-Bit ADCs |
| 中文描述： | 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP24 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-24 |
| 文件頁數(shù)： | 10/20頁 |
| 文件大?。?/td> | 808K |
| 代理商： | MAX1271ACNG |
M
Multirange, +5V, 8-Channel,
Serial 12-Bit ADCs
10
______________________________________________________________________________________
Input Bandwidth
The ADC’s input small-signal bandwidth depends on the
selected input range and varies from 1.5MHz to 5MHz
(see
Electrical Characteristics
). The MAX1270B/
MAX1271B maximum sampling rate is 110ksps (100ksps
for the MAX1270A/MAX1271A). By using undersampling
techniques, it is possible to digitize high-speed transient
events and measure periodic signals with bandwidths
exceeding the ADC’s sampling rate.
To avoid high-frequency signals being aliased into the
frequency band of interest, anti-aliasing filtering is rec-
ommended.
Input Range and Protection
The MAX1270/MAX1271 have software-selectable input
ranges. Each analog input channel can be indepen-
dently programmed to one of four ranges by setting the
appropriate control bits (RNG, BIP) in the control byte
(Table 1). The MAX1270 has selectable input ranges
extending to ±10V (±V
REF
x 2.441), while the MAX1271
has selectable input ranges extending to ±V
REF
. Figure
4 shows the equivalent input circuit.
A resistor network on each analog input provides
±16.5V fault protection for all channels. Whether or not
the channel is on, this circuit limits the current going
into or out of the pin to less than 2mA. This provides an
added layer of protection when momentary overvolt-
ages occur at the selected input channel, when a neg-
ative signal is applied to the input, and when the device
is configured for unipolar mode. The overvoltage pro-
tection is active even if the device is in power-down
mode or if V
DD
= 0.
Digital Interface
The MAX1270/MAX1271 feature a serial interface that is
fully compatible with SPI/QSPI and MICROWIRE devices.
For SPI/QSPI, set CPOL = 0, CPHA = 0 in the SPI control
registers of the microcontroller. Figure 5 shows detailed
serial-interface timing information. See Table 1 for details
on programming the input control byte.
t
CSH
t
CSS
t
CL
t
DS
t
DH
t
DV
t
CH
t
DO
t
TR
t
CSH
CS
SCLK
DIN
DOUT
Figure 5. Detailed Serial-Interface Timing
R3
5.12k
R2
R1
CH_
S1
S2
S3
S4
BIPOLAR
UNIPOLAR
VOLTAGE
REFERENCE
T/H
OUT
HOLD
TRACK
TRACK
HOLD
OFF
ON
C
HOLD
S1 = BIPOLAR/UNIPOLAR SWITCH
S2 = INPUT MUX SWITCH
S3, S4 = T/H SWITCH
R1 = 12.5k
(MAX1270)
or 5.12k
(MAX1271)
R2 = 8.67k
(MAX1270)
or
∞
(MAX1271)
Figure 4. Equivalent Input Circuit
相關PDF資料 |
PDF描述 |
|---|---|
| MAX1271BCAI | Multirange, +5V, 8-Channel, Serial 12-Bit ADCs |
| MAX1271AENG | LJT 18C 18#20 SKT PLUG |
| MAX1270AEAI | Multirange, +5V, 8-Channel, Serial 12-Bit ADCs |
| MAX1271AEAI | Multirange, +5V, 8-Channel, Serial 12-Bit ADCs |
| MAX1270BEAI | Multirange, +5V, 8-Channel, Serial 12-Bit ADCs |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1271ACNG+ | 功能描述:模數(shù)轉換器 - ADC 12-Bit 8Ch 110ksps 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 |
| MAX1271AEAI | 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 |
| MAX1271AEAI+ | 功能描述:模數(shù)轉換器 - ADC 12-Bit 8Ch 110ksps 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 |
| MAX1271AEAI+T | 功能描述:模數(shù)轉換器 - ADC 12-Bit 8Ch 110ksps 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 |
| MAX1271AEAI-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 |
發(fā)布緊急采購，3分鐘左右您將得到回復。