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参数资料
| 型号： | DAC8551IADGKRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | DAC |
| 英文描述： | SERIAL INPUT LOADING, 12 us SETTLING TIME, 16-BIT DAC, PDSO8 |
| 封装： | GREEN, PLASTIC, MSOP-8 |
| 文件页数： | 11/24页 |
| 文件大小： | 456K |
| 代理商： | DAC8551IADGKRG4 |
www.ti.com
APPLICATION INFORMATION
USING THE REF02 AS A POWER SUPPLY
200mA )
5V
5kW
+ 1.2mA
(2)
BIPOLAR OPERATION USING THE DAC8551
V
O +
V
REF
D
65536
R
1
) R2
R
1
* VREF
R
2
R
1
REF02
Three-Wire
Serial
Interface
+5V
285 A
m
V
=0Vto5V
OUT
SYNC
SCLK
D
IN
+15V
DAC8551
V
O +
10
D
65536
* 5V
(4)
DAC8551
V
REF
R
2
10kW
R
1
10kW
V
FB
V
OUT
V
REF
10 F
m
0.1 F
m
–6V
5V
+6V
OPA703
Three-Wire
SerialInterface
SLAS429B – APRIL 2005 – REVISED OCTOBER 2006
The total typical current required (with a 5k
load on
the DAC output) is:
FOR THE DAC8551
Due to the extremely low supply current required by
the DAC8551, an alternative option is to use the
The load regulation of the REF02 is typically
REF02 (+5 V precision voltage reference) to supply
0.005%/mA, resulting in an error of 299
V for the
the required voltage to the device, as illustrated in
1.2mA current drawn from it. This value corresponds
to a 3.9LSB error.
The DAC8551 has been designed for single-supply
operation, but a bipolar output range is also possible
using the circuit in Figure 54. The circuit shown gives
an
output
voltage
range
of
±V
REF.
Rail-to-rail
operation at the amplifier output is achievable using
an OPA703 as the output amplifier.
The output voltage for any input code can be
calculated as follows:
(3)
where D represents the input code in decimal
Figure 53. REF02 as a Power Supply to the
(0–65535).
DAC8551
With VREF = 5V, R1 = R2 = 10k.
This configuration is especially useful if the power
supply is quite noisy or if the system supply voltages
are at some value other than 5V. The REF02 outputs
a steady supply voltage for the DAC8551. If the
Using this example, an output voltage range of
±5V
REF02 is used, the current it needs to supply to the
with 0000h corresponding to a –5V output and
DAC8551 is 200
A. This configuration is with no
FFFFh corresponding to a 5V output can be
load on the output of the DAC. When a DAC output
achieved. Similarly, using VREF = 2.5V, a ±2.5V
is loaded, the REF02 also needs to supply the
output voltage range can be achieved.
current to the load.
Figure 54. Bipolar Output Range
19
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| DAC8551IADGKT | 功能描述:数模转换器- DAC 16B Ultralow Glitch Vltg Output 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 |
| DAC8551IADGKTG4 | 功能描述:数模转换器- DAC 16B Ultralow Glitch Vltg Output 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 |
| DAC8551IDGK | 功能描述:数模转换器- DAC 16-Bit UltrLo Glitch Vltg 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 |
| DAC8551IDGKR | 功能描述:数模转换器- DAC 16-Bit UltrLo Glitch Vltg 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 |
| DAC8551IDGKRG4 | 功能描述:数模转换器- DAC 16-Bit UltrLo Glitch Vltg 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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