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参数资料
| 型号： | MAX1080BEUP+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/24页 |
| 文件大小： | 0K |
| 描述： | IC ADC 10BIT 400KSPS 20-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 74 |
| 位数： | 10 |
| 采样率（每秒）： | 400k |
| 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： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-TSSOP |
| 包装： | 管件 |
| 输入数目和类型： | 8 个单端，单极；8 个单端，双极；4 个差分，单极；4 个差分，双极 |
| 产品目录页面： | 1395 (CN2011-ZH PDF) |
MAX1080/MAX1081
300ksps/400ksps, Single-Supply, Low-Power,
8-Channel, Serial 10-Bit ADCs with Internal Reference
20
______________________________________________________________________________________
UNIPOLAR MODE
BIPOLAR MODE
Full Scale
Zero Scale
Positive
Zero
Negative
Full Scale
Scale
Full Scale
VREF + VCOM
VCOM
VREF / 2
VCOM
-VREF / 2
+ VCOM
Table 5. Full Scale and Zero Scale
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 16).
High-Speed Digital Interfacing with QSPI
The MAX1080/MAX1081 can interface with QSPI using
the circuit in Figure 17 (fSCLK = 4.0MHz, CPOL = 0,
CPHA = 0). This QSPI circuit can be programmed to do a
conversion on each of the eight channels. The result is
stored in memory without taxing the CPU, since QSPI
incorporates its own microsequencer.
TMS320LC3x Interface
Figure 18 shows an application circuit to interface the
MAX1080/MAX1081 to the TMS320 in external clock
mode. Figure 19 shows the timing diagram for this inter-
face circuit.
Use the following steps to initiate a conversion in the
MAX1080/MAX1081 and to read the results:
1) The TMS320 should be configured with CLKX (trans-
mit clock) as an active-high output clock and CLKR
(TMS320 receive clock) as an active-high input
clock. CLKX and CLKR on the TMS320 are connect-
ed to the MAX1080/MAX1081’s SCLK input.
2) The MAX1080/MAX1081’s CS pin is driven low by
the TMS320’s XF_ I/O port to enable data to be
clocked into the MAX1080/MAX1081s’ DIN pin.
3) An 8-bit word (1XXXXX11) should be written to the
MAX1080/MAX1081 to initiate a conversion and
place the device into normal operating mode. See
Table 3 to select the proper XXXXX bit values for your
specific application.
4) The MAX1080/MAX1081s’ SSTRB output is moni-
tored through the TMS320’s FSR input. A falling
edge on the SSTRB output indicates that the con-
version is in progress and data is ready to be
received from the device.
5) The TMS320 reads in 1 data bit on each of the next
16 rising edges of SCLK. These data bits represent
the 10 + 2-bit conversion result followed by 4 trailing
bits, which should be ignored.
6) Pull CS high to disable the MAX1080/MAX1081 until
the next conversion is initiated.
Definitions
Integral Nonlinearity
Integral nonlinearity (INL) is the deviation of the values
from a straight line on an actual transfer function. This
straight line can be a best-straight-line fit or a line
drawn between the endpoints of the transfer function,
once offset and gain errors have been nullified. The
static linearity parameters for the MAX1080/MAX1081
are measured using the best-straight-line fit method.
Differential Nonlinearity
Differential nonlinearity (DNL) is the difference between
an actual step width and the ideal value of 1LSB. A
DNL error specification of less than 1LSB guarantees
no missing codes and a monotonic transfer function.
VDD1
GND
SUPPLIES
DGND
VDD
COM
GND
VDD1
DIGITAL
CIRCUITRY
MAX1080
MAX1081
*R = 10
*OPTIONAL
VDD2
Figure 16. Power-Supply Grounding Connection
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1080BEUP+ | 功能描述:模数转换器 - ADC 5V 400ksps Low-Power 8Ch Serial 10-Bit 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 |
| MAX1080BEUP+T | 功能描述:模数转换器 - ADC 5V 400ksps Low-Power 8Ch Serial 10-Bit 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 |
| MAX1080BEUP-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 |
| MAX1080-MAX1081 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:300ksps/400ksps, Single-Supply, Low-Power, 8-Channel, Serial 10-Bit ADCs with Internal Reference |
| MAX1081 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:300ksps/400ksps, Single-Supply, Low-Power, 8-Channel, Serial 10-Bit ADCs with Internal Reference |
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