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参数资料
| 型号： | MAX1143BCAP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/20页 |
| 文件大小： | 0K |
| 描述： | IC ADC 14BIT 200KSPS 20-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 位数： | 14 |
| 采样率（每秒）： | 200k |
| 数据接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 640mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 20-SSOP |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 1 个单端，单极；1 个单端，双极 |
MAX1142/MAX1143
14-Bit ADC, 200ksps, +5V Single-Supply
with Reference
______________________________________________________________________________________
11
In external clock mode, SSTRB is high-impedance
when
CS is high. In external clock mode, CS is normally
held low during the entire conversion. If
CS goes high
during the conversion, SCLK is ignored until
CS goes
low. This allows external clock mode to be used with 8-
bit bytes.
Internal Clock
In internal clock mode, the MAX1142/MAX1143 gener-
ates its own conversion clock. This frees the micro-
processor from the burden of running the SAR conver-
sion clock, and allows the conversion results to be read
back at the processor’s convenience, at any clock rate
up to 8MHz.
SSTRB goes low at the start of the conversion and goes
high when the conversion is complete. SSTRB will be
low for a maximum of 6s, during which time SCLK
should remain low for best noise performance. An inter-
nal register stores data when the conversion is in
progress. SCLK clocks the data out of the internal stor-
age register at any time after the conversion is com-
plete.
The MSB of the conversion is available at DOUT when
SSTRB goes high. The subsequent 15 falling edges on
SCLK shift the remaining bits out of the internal storage
register (Figure 4).
CS does not need to be held low
once a conversion is started.
When internal clock mode is selected, SSTRB does not
go into a high-impedance state when
CS goes high.
Figure 5 shows the SSTRB timing in internal clock
mode. In internal clock mode, data can be shifted into
the MAX1142/MAX1143 at clock rates up to 4.8MHz,
provided that the minimum acquisition time,
tACQ, is kept above 1.14s in bipolar mode and 1.82s
in unipolar-mode. Data can be clocked out at 8MHz.
Output Data
The output data format is straight binary for unipolar
conversions and two’s complement in bipolar mode. In
both modes the MSB is shifted out of the MAX1142/
MAX1143 first.
Table 2. User-Programmable Outputs
OUTPUT
PIN
PROGRAMMED
THROUGH
CONTROL-
BYTE
POWER-ON
OR
RST
DEFAULT
DESCRIPTION
P2
Bit 2
0
P1
Bit 1
0
P0
Bit 0
0
User programmable outputs follow the state of the Control-Byte’s three LSBs,
and are updated simultaneously when a new Control-Byte is written. Outputs
are push-pull. In hardware and software shutdown, these outputs are
unchanged and remain low-impedance.
ACQUISITION
CONVERSION
IDLE
SCLK
DOUT
A/D
STATE
DIN
SSTRB
CS
4
1
8
12
START
M1
M0
P2
P1
P0
UNI/
BIP
INT/
EXT
15
21
24
B10
B9
B12
B11
B8
B7
B2
B13
MSB
B0
LSB
FILLED WITH
ZEROS
B1
X
tACQ
Figure 2. Short Acquisition Mode (24-Clock Cycles) External Clock, Bipolar Mode
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1143BEAP | 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 |
| MAX1144 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:14-Bit ADCs.150ksps.3.3V Single Supply |
| MAX1144ACAP | 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 |
| MAX1144ACAP+ | 功能描述:模数转换器 - ADC 14-Bit 150ksps 2.2V 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 |
| MAX1144ACAP+T | 功能描述:模数转换器 - ADC 14-Bit 150ksps 2.2V 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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