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| 型号： | MAX1394ETB+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 18/18页 |
| 文件大小： | 0K |
| 描述： | IC ADC 8BIT 416KSPS 10-TDFN-EP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 位数： | 8 |
| 采样率（每秒）： | 416k |
| 数据接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 1.48W |
| 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： | 10-WFDFN 裸露焊盘 |
| 供应商设备封装： | 10-TDFN-EP（3x3） |
| 包装： | 标准包装 |
| 输入数目和类型： | 2 个单端，单极；2 个单端，双极；1 个差分，单极；1 个差分，双极 |
| 产品目录页面： | 1396 (CN2011-ZH PDF) |
| 其它名称： | MAX1394ETB+TDKR |
ference between the sampled positive and negative
input voltages is converted. The time required for the
T/H to acquire an input signal is determined by how
quickly its input capacitance is charged. The required
acquisition time lengthens as the input signal’s source
impedance increases. The acquisition time, tACQ, is the
minimum time needed for the signal to be acquired. It is
calculated by the following equation:
tACQ
≥ 5.6 x (RSOURCE + RIN) x CIN + tPU
where
RSOURCE is the source impedance of the input signal.
RIN = 500
Ω, which is the equivalent differential analog
input resistance.
CIN = 16pF, which is the equivalent differential analog
input capacitance.
tPU = 400ns.
Note: tACQ is never less than 600ns and any source
impedance below 400
Ω does not significantly affect the
ADC’s AC performance.
Analog Input Bandwidth
The ADC’s input-tracking circuitry has a 4MHz full-
power bandwidth, making it possible to digitize high-
speed transient events and measure periodic signals
with bandwidths exceeding the ADC’s sampling rate by
using undersampling techniques.
Use anti-alias filtering to avoid high-frequency signals
being aliased into the frequency band of interest.
Analog Input Range and Protection
The MAX1391/MAX1394 produce a digital output that
corresponds to the analog input voltage as long as the
analog inputs are within their specified range. When
operating the MAX1391 in unipolar mode (UNI/BIP = 1),
the specified differential analog input range is from 0 to
VREF. When operating in bipolar mode (UNI/BIP = 0),
the differential analog input range is from -VREF/2 to
+VREF/2 with a common-mode range of 0 to VDD. The
MAX1394 has an input range from 0 to VREF.
Internal protection diodes confine the analog input volt-
age within the region of the analog power input rails
(VDD, GND) and allow the analog input voltage to swing
from GND - 0.3V to VDD + 0.3V without damage. Input
voltages beyond GND - 0.3V and VDD + 0.3V forward
bias the internal protection diodes. In this situation, limit
the forward diode current to less than 50mA to avoid
damage to the MAX1391/MAX1394.
Output Data Format
Figures 8, 9, and 10 illustrate the conversion timing for
the MAX1391/MAX1394. Twelve SCLK cycles are
required to read the conversion result and data on
DOUT transitions on the falling edge of SCLK. The con-
version result contains 4 zeros, followed by 8 data bits
with the data in MSB-first format. For the MAX1391, data
is straight binary for unipolar mode and two’s comple-
ment for bipolar mode. For the MAX1394, data is always
straight binary.
Transfer Function
Figure 5 shows the unipolar transfer function for the
MAX1391/MAX1394. Figure 6 shows the bipolar trans-
fer function for the MAX1391. Code transitions occur
halfway between successive-integer LSB values.
MAX1391/MAX1394
_______________________________________________________________________________________
9
1.5V to 3.6V, 416ksps, 1-Channel True-Differential/
2-Channel Single-Ended, 8-Bit, SAR ADCs
+
-
HOLD
TRACK
CIN+
REF
GND
DAC
CIN-
RIN+
RIN-
VDD/2
RSOURCE
COMPARATOR
HOLD
AIN2
AIN1 (AIN+)*
GND (AIN-)*
ANALOG
SIGNAL
SOURCE
MAX1391
MAX1394
(*INDICATES THE MAX1391)
Figure 4. Equivalent Input Circuit
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1394MTB+T | 功能描述:模数转换器 - ADC 8-Bit 2Ch 400ksps 3.6V 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 |
| MAX1394MTB-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 |
| MAX1395ETB | 制造商:Maxim Integrated Products 功能描述:1.5V-3.6V357KSPS1-CHANNEL TRUE-DI - Rail/Tube |
| MAX1395ETB+ | 制造商:Maxim Integrated Products 功能描述:ADC SGL SAR 357KSPS 10-BIT SERL 10TDFN EP - Rail/Tube |
| MAX1395ETB+T | 功能描述:模数转换器 - ADC 10-Bit 2Ch 357ksps 3.6V 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 |
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