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参数资料
| 型号： | MAX1282BEUE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/23页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT 400KSPS 16-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 96 |
| 位数： | 12 |
| 采样率（每秒）： | 300k |
| 数据接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 13.75mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 管件 |
| 输入数目和类型： | 4 个单端，单极；4 个单端，双极；2 个伪差分，单极；2 个伪差分，双极 |
| 产品目录页面： | 1396 (CN2011-ZH PDF) |
MAX1282/MAX1283
300ksps/400ksps, Single-Supply, 4-Channel,
Serial 12-Bit ADCs with Internal Reference
18
______________________________________________________________________________________
Figure 11a. Full Power-Down Timing
RE FADJ
1.22V
0V
2.5mA
1.3mA OR 0.9mA
DIN
IVDD1 + IVDD2
REF
FULLPD
REDP
WAIT 2ms (10 x RC)
FULLPD
1
0 0
11
γ = RC = 17k x 0.01F
DUMMY CONVERSION
1
1 0
0 0
2.5V
2.5mA
0mA
2.5V
0V
Figure 11b. FASTPD and REDP Timing
2.5V (ALWAYS ON)
2.5mA
DIN
IVDD1 + IVDD2
REF
REDP
FASTPD
1
1 0
11
1 0
0 1
2.5mA
0.9mA
1.3mA
To use the direct REF input, disable the internal buffer by
connecting REFADJ to VDD1. Using the REFADJ input
makes buffering the external reference unnecessary.
Transfer Function
Table 5 shows the full-scale voltage ranges for unipolar
and bipolar modes.
Figure 13 depicts the nominal, unipolar input/output
(I/O) transfer function, and Figure 14 shows the bipolar
I/O transfer function. Code transitions occur halfway
between successive-integer LSB values. Output coding
is binary, with 1LSB = 0.61mV (2.500V / 4096) for unipo-
lar operation, and 1LSB = 0.61mV [(2.500V / 2) / 4096]
for bipolar operation.
Layout, Grounding, and Bypassing
For best performance, use PC boards; wire-wrap
boards are not recommended. Board layout should
ensure that digital and analog signal lines are separated
from each other. Do not run analog and digital (espe-
cially clock) lines parallel to one another, or digital lines
underneath the ADC package.
Figure 15 shows the recommended system ground
connections. Establish a single-point analog ground
(star ground point) at GND. Connect all other analog
grounds to the star ground. Connect the digital system
ground to this ground only at this point. For lowest-
noise operation, the ground return to the star ground’s
power supply should be low impedance and as short
as possible.
High-frequency noise in the VDD1 power supply may
affect the high-speed comparator in the ADC. Bypass
the supply to the star ground with 0.1F and 10F
capacitors close to VDD1 of the MAX1282/MAX1283.
Minimize capacitor lead lengths for best supply-noise
rejection. If the power supply is very noisy, a 10 resis-
tor can be connected as a lowpass filter (Figure 15).
High-Speed Digital Interfacing with QSPI
The MAX1282/MAX1283 can interface with QSPI using
the circuit in Figure 16 (CPOL = 0, CPHA = 0). This
QSPI circuit can be programmed to do a conversion on
each of the four channels. The result is stored in memory
without taxing the CPU, since QSPI incorporates its own
microsequencer.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1282BEUE+ | 功能描述:模数转换器 - ADC 12-Bit 4Ch 400ksps 5.5V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1282BEUE+T | 功能描述:模数转换器 - ADC 12-Bit 4Ch 400ksps 5.5V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1282BEUE-T | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1282EVC16 | 功能描述:数据转换 IC 开发工具 MAX1282C16 Eval Kit RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| MAX1282EVKIT | 功能描述:数据转换 IC 开发工具 MAX1282 Eval Kit RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
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