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参数资料
| 型号： | MAX1497EPI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/33页 |
| 文件大小： | 0K |
| 描述： | IC ADC 3 1/2DIG W/LED DVR 28-DIP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 14 |
| 位数： | 3.5 位 |
| 采样率（每秒）： | 5 |
| 数据接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 28-DIP（0.600"，15.24mm） |
| 供应商设备封装： | 28-PDIP |
| 包装： | 管件 |
| 输入数目和类型： | 1 个差分，双极 |
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MAX1497/MAX1499
3.5- and 4.5-Digit, Single-Chip ADCs with LED
Drivers and C Interface
16
______________________________________________________________________________________
Figure 15 shows the MAX1497/MAX1499 operating with
an external differential reference. In this mode, REF- is
connected to the top of the strain gauge and REF+ is
connected to the midpoint of the resistor-divider of
the supply.
Applications Information
Serial Interface
The SPI/QSPI/MICROWIRE serial interface consists of a
chip select (CS), a serial clock (SCLK), a data in (DIN),
a data out (DOUT), and an asynchronous EOC output.
EOC provides an asynchronous end-of-conversion sig-
nal with a period of 200ms (fCLK = 4.9152MHz). The
MAX1497 updates the data register when EOC goes
high. Data is valid in the ADC result registers when
EOC returns low. The serial interface provides access
to 12 on-chip registers, allowing control to all the power
modes and functional blocks. Table 5 lists the address
and read/write accessibility of all the registers.
A logic high on CS tri-states DOUT and causes the
MAX1497/MAX1499 to ignore any signals on SCLK and
DIN. To clock data in or out of the internal shift register,
drive CS low. SCLK synchronizes the data transfer. The
rising edge of SCLK clocks DIN into the shift register,
and the falling edge of SCLK clocks DOUT out of the
shift register. DIN and DOUT are transferred MSB first
(data is left justified). Figures 8–12 show the detailed
serial interface timing diagrams for the 8- and 16-bit
read/write operations.
All communication with the MAX1497/MAX1499 begins
with a command byte on DIN, where the first logic one
on DIN is recognized as the START bit (MSB) for the
command byte. The following seven clock cycles load
the command into a shift register. These 7 bits specify
which of the registers are accessed next, and whether
a read or write operation takes place. Transitions on the
serial clock after the command byte transfer, cause a
write or read from the device until the correct number of
CS
SCLK
DIN
DOUT
tCSH
tCL
tDS
tDH
tDV
tCH
tDO
tTR
tCSH
tCSS
Figure 8. Detailed Timing Diagram
SCLK
CS
DIN
DOUT
10
RS4 RS3
RS2 RS1
D7
D6
D5
D4
D3
D2
D1
D0
D8
D9
RS0
x
D15 D14 D13 D12 D11 D10
CONTROL BYTE
DATA BYTE
Figure 9. Serial-Interface, 16-Bit, Write Timing Diagram
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1497EPI+ | 功能描述:模数转换器 - ADC 3.5 Digit ADC w/LED Drivers 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 |
| MAX14980ETO+ | 制造商:Maxim Integrated Products 功能描述:6 GBPS QUAD SAS/SATA REDRIVER WITH EQUALIZATION - Rail/Tube 制造商:Maxim Integrated Products 功能描述:IC REDRIVER 6GBPS SAS/SATA QFN 制造商:Maxim Integrated Products 功能描述:6G/PS Quad SAS/SATA redriver with eq |
| MAX14980ETO+T | 制造商:Maxim Integrated Products 功能描述:- Tape and Reel 制造商:Maxim Integrated Products 功能描述:MAX14980ETO+T |
| MAX14982ETO+ | 制造商:Maxim Integrated Products 功能描述:SINGLE LANE 2:1 / 1:2 MUX + REDRIVER WITH EQUALIZATION - Rail/Tube 制造商:Maxim Integrated Products 功能描述:IC EQUALIZER/REDRVR 42TQFN |
| MAX14982ETO+T | 制造商:Maxim Integrated Products 功能描述:1:2 / 2:1 PCIE GEN 2 MUX + REDRIVER - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC EQUALIZER/REDRVR 42TQFN |
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