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参数资料
| 型号： | DAC7625U/1KG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | DAC |
| 英文描述： | PARALLEL, WORD INPUT LOADING, 5 us SETTLING TIME, 12-BIT DAC, PDSO28 |
| 封装： | GREEN, SOIC-28 |
| 文件页数： | 4/19页 |
| 文件大小： | 473K |
| 代理商： | DAC7625U/1KG4 |
12
DAC7724, 7725
THEORY OF OPERATION
The DAC7724 and DAC7725 are quad voltage output,
12-bit digital-to-analog converters (DACs). The architecture
is a classic R-2R ladder configuration followed by an opera-
tional amplifier that serves as a buffer, as shown in Figure 1.
Each DAC has its own R-2R ladder network and output op-
amp, but all share the reference voltage inputs. The mini-
mum voltage output (“zero-scale”) and maximum voltage
output (“full-scale”) are set by the external voltage refer-
ences (VREFL and VREFH, respectively). The digital input is
a 12-bit parallel word and the DAC input registers offer a
readback capability. The converters can be powered from a
single +15V supply or a dual
±15V supply. Each device
offers a reset function which immediately sets all DAC
registers and DAC output voltages to mid-scale (DAC7724,
code 800H) or to zero-scale (DAC7725, code 000H). See
Figures 2 and 3 for the basic operation of the DAC7724/25.
FIGURE 1. DAC7724/25 Architecture.
FIGURE 2. Basic Single-Supply Operation of the DAC7724/25.
R
2R
V
REFH
V
OUT
RR
R
V
REFL
R
F
1
2
3
4
V
REFH
V
OUTB
Load DAC Registers
Reset DACs(1)
V
OUTA
V
SS
5
GND
6
RESET
7
8
9
10
11
12
13
14
LDAC
DB0
DB1
DB2
DB3
DB4
DB5
DB6
V
REFL
V
OUTC
DAC7724
DAC7725
V
OUTD
V
CC
28
27
26
25
V
DD
24
CS
23
A0
A1
R/W
DB11
DB10
DB9
DB8
DB7
22
21
20
19
18
17
16
15
Chip Select
Read/Write
Data Bus
Address Bus
or Decoder
+15V
NOTE: (1) Reset LOW sets all DACs to code 800
H on the DAC7724 and to code 000H on the DAC7725.
0V to +10V
0.1
F
1
F to 10F
+
+5V
0.1
F
1
F to 10F
+
+10.00V
0.1
F
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DAC7625UB | 功能描述:数模转换器- DAC 12-Bit Quad Voltage Output 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 |
| DAC7625UB | 制造商:Texas Instruments 功能描述:Digital/Analog Converter IC Interface Ty |
| DAC7625UB/1K | 功能描述:数模转换器- DAC 12-Bit Quad Voltage Output 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 |
| DAC7625UB/1KG4 | 功能描述:数模转换器- DAC 12-Bit Quad Voltage Output 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 |
| DAC7625UBG4 | 功能描述:数模转换器- DAC 12-Bit Quad Voltage Output 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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