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参数资料
| 型号： | MAX195BCWE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/28页 |
| 文件大小： | 0K |
| 描述： | IC ADC 16BIT 85KSPS 16-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1,000 |
| 位数： | 16 |
| 采样率（每秒）： | 85k |
| 数据接口： | QSPI?，串行，SPI? |
| 转换器数目： | 2 |
| 功率耗散（最大）： | 80mW |
| 电压电源： | 模拟和数字，双 ± |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 1 个单端，单极；1 个单端，双极 |
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If clocking data in on the falling edge (CPOL = 0,
CPHA = 1), the maximum CLK rate is given by:
Do not exceed the maximum CLK frequency given in
the
Electrical Characteristics table. To clock data in on
the falling edge, your processor hold time must not
exceed tCD minimum (100ns).
While QSPI can provide the required 20 CLK cycles as
two continuous 10-bit transfers, SPI is limited to 8-bit
transfers. This means that with SPI, a conversion must
consist of three 8-bit transfers. Ensure that the pauses
between 8-bit operations at your selected clock rate
are short enough to maintain a 20ms or shorter conver-
sion time, or the leakage of the capacitive DAC may
cause errors.
Complete source code for the Motorola 68HC16 and
the MAX195 evaluation kit (EV kit) using this mode is
available with the MAX195 EV kit.
Mode 2 (Asynchronous Data Transfer)
This mode uses a conversion clock (CLK) and a serial
clock (SCLK). The serial data is clocked out between
conversions, which reduces the maximum throughput
for high CLK rates, but may be more convenient for
some applications. Figure 19 is a block diagram with a
QSPI processor (Motorola 68HC16) connected to the
MAX195. Figure 20 shows the associated timing dia-
gram. Figure 21 gives an assembly language listing for
this arrangement.
f
=
1
t
+ t
CLK(max)
CD
SD
MAX195
16-Bit, 85ksps ADC with 10A Shutdown
______________________________________________________________________________________
17
EOC
CLK
tCD
tDV
DATA LATCHED:
tDH
CS, CONV
DOUT
B15 FROM PREVIOUS
CONVERSION
B15
B2
B14
B1
B0
MAX195
QSPI
GPT
BP/UP/SHDN
SCLK
EOC
DOUT
RESET
CONV
1.7MHz
CLK
IC3
CS
OC3
SCK
IC1
MISO
OC2
START
PCS0
1.3
s
74HC32
Figure 19. MAX195 Connection to QSPI Processor Clocking
Data Out with SCLK Between Conversions
Figure 18. Timing Diagram for Circuit of Figure 17 (Mode 1)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX195BEPE | 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 |
| MAX195BEPE+ | 功能描述:模数转换器 - ADC 16-Bit 85ksps 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 |
| MAX195BEPE+T | 制造商:Maxim Integrated Products 功能描述:16-BIT, 85KSPS ADC WITH 10?A SHUTDOWN - Tape and Reel |
| MAX195BEWE | 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 |
| MAX195BEWE+ | 功能描述:模数转换器 - ADC 16-Bit 85ksps 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 |
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