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参数资料
| 型号： | MAX5774UCB+D |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/28页 |
| 文件大小： | 0K |
| 描述： | IC DAC 14BIT 32CHAN SER 64-TQFP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 160 |
| 设置时间： | 20µs |
| 位数： | 14 |
| 数据接口： | 串行 |
| 转换器数目： | 32 |
| 电压电源： | 模拟和数字 |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 64-LQFP |
| 供应商设备封装： | 64-LQFP（10x10） |
| 包装： | 托盘 |
| 输出数目和类型： | 32 电压，单极 |
| 采样率（每秒）： | * |
| 产品目录页面： | 1398 (CN2011-ZH PDF) |
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MAX5773/MAX5774/MAX5775
Gain and Offset Registers
The MAX5773/MAX5774/MAX5775 contain a gain and
offset register associated with each channel to correct
real-time gain and offset errors associated with each
channel. The gain and offset registers can be
accessed individually or in pairs.
The gain word range is limited between 0 and 1. The
gain word is an unsigned 14-bit data word. A gain word
of 0000h is a special mapping to provide a gain of
absolute one, i.e., no gain correction. For all the other
gain word codes, the amount of gain correction varies
proportionally to the gain word’s decimal value. For
example, a gain word of 0001h is equivalent to a gain
of 0.514 and a gain of 3FFFh is equivalent to 1 - 0.514
(see Table 9). To access the gain register, set control
bits C3–C0 = 1000 (see Tables 7 and 8).
The offset has a range from -FS/2 to + (FS/2 - 1 LSB).
The offset word is a 14-bit data word represented in
two’s complement. For example, an offset word equiva-
lent to 1FFFh would provide an offset of FS/2 - 1 LSB
and offset word of 2000h would provide an offset of
-FS/2 (see Table 10). To access the offset register, set
control bits C3–C0 = 1001 (see Tables 7 and 8).
Configuration Register
The configuration register controls the advanced fea-
tures of the MAX5773/MAX5774/MAX5775. Write to the
configuration register by setting control bits C3–C0 =
1100 and address bits 000000. Table 11 shows the
configuration register data format for the D13–D0 data
bits. Table 12 shows the commands controlled by the
configuration register.
DSP Mode (
DSP)
The MAX5773/MAX5774/MAX5775 provide a hardware-
selectable DSP-interface mode. The active-low DSP
logic input selects the microcontroller (C)-interface or
DSP-interface mode. Drive DSP high for C-interface
mode. Drive DSP low for DSP-interface mode. DSP
mode, when active, allows chip select (CS) to go high
before the entire 32-bit command word is clocked in.
Figure 1 illustrates serial timing for both C- and DSP-
interface modes.
SING
When SING = 0, the MAX5773/MAX5774/MAX5775 are
in daisy-chain mode
. For daisy-chain operation, set
DSP high (C mode) and SING = 0.
32-Channel, 14-Bit, Voltage-Output
DACs with Serial Interface
20
______________________________________________________________________________________
CONTROLLER
DEVICE
DIN(0)
DOUT(0)
1
SCLK
CS
DSP
MAX577_
DIN(1)
DOUT(1)
SCLK
CS
DSP
MAX577_
DIN(2)
DOUT(2)
SCLK
CS
DSP
MAX577_
Figure 5. Daisy-Chain Configuration
CODE (DATA BITS D13–D0)
GAIN VALUE
0000h
Unity Gain
0001h
0.000061
0002h
0.00012
::
1FFFh
0.499938
2000h
0.5
::
3FFEh
0.999877
3FFFh
0.999938
Table 9. Gain Register Code Values
CODE (DATA BITS D13–D0)
OFFSET VALUE*
1FFFh
FS/2 - 1 LSB
::
0001h
+1 LSB
0000h
0
3FFFh
-1 LSB
::
2000h
-FS/2
Table 10. Offset Register Code Values
*
1 LSB = FS/214
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相关代理商/技术参数 |
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|---|---|
| MAX5774UCB-TD | 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MAX5774UTK | 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MAX5774UTK+ | 功能描述:数模转换器- DAC 14-Bit 32Ch Precision DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MAX5774UTK+G074 | 功能描述:数模转换器- DAC 32-Channel 14-Bit Voltage-Output DAC with Serial Interface RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MAX5774UTK+T | 功能描述:数模转换器- DAC 14-Bit 32Ch Precision DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
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