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参数资料
| 型号： | DAC8564ICPWR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | DAC |
| 英文描述： | SERIAL INPUT LOADING, 12 us SETTLING TIME, 16-BIT DAC, PDSO16 |
| 封装： | GREEN, PLASTIC, TSSOP-16 |
| 文件页数： | 30/51页 |
| 文件大小： | 1549K |
| 代理商： | DAC8564ICPWR |
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DriftError=
10 (ppm/ C)
°
6
V
-
REF_MAX
REF_MIN
V
T
REF
RANGE
5
6
7
8
12
11
10
9
IOV
DD
D
IN
SCLK
SYNC
V
L
REF
GND
V
C
OUT
V
D
OUT
AV
DD
DAC8564
1
2
3
4
16
15
14
13
LDAC
ENABLE
A1
A0
V
A
OUT
V
B
OUT
V
H/V
OUT
REF
AV
DD
1 F
m
150nF
SBAS403D
– JUNE 2007 – REVISED MAY 2011
APPLICATION INFORMATION
INTERNAL REFERENCE
Temperature Drift
The internal reference of the DAC8564 does not
The internal reference is designed to exhibit minimal
require
an
external
load
capacitor
for
stability
drift error, defined as the change in reference output
because it is stable with any capacitive load.
voltage
over
varying
temperature.
The
drift
is
However,
for
improved
noise
performance,
an
calculated using the box method described by
external load capacitor of 150nF or larger connected
to the VREFH/VREFOUT output is recommended.
Figure 97 shows the typical connections required for
operation of the DAC8564 internal reference. A
supply bypass capacitor at the AVDD input is also
(2)
recommended.
Where:
VREF_MAX = maximum reference voltage observed
within temperature range TRANGE.
VREF_MIN = minimum reference voltage observed
within temperature range TRANGE.
VREF = 2.5V, target value for reference output
voltage.
The internal reference (grades C and D) features an
exceptional
typical
drift
coefficient
of
2ppm/
°C
from
–40°C to +120°C. Characterizing a large number
of units, a maximum drift coefficient of 5ppm/
°C
(grades C and D) is observed. Temperature drift
results are summarized in the Typical Characteristics.
Noise Performance
Figure 97. Typical Connections for Operating the
Typical 0.1Hz to 10Hz voltage noise can be seen in
DAC8564 Internal Reference
Figure 8, Internal Reference Noise. Additional filtering
can be used to improve output noise levels, although
Supply Voltage
care should be taken to ensure the output impedance
does not degrade the ac performance. The output
The internal reference features an extremely low
noise spectrum at VREFH/VREFOUT without any
dropout voltage. It can be operated with a supply of
external components is depicted in Figure 7, Internal
only 5mV above the reference output voltage in an
Reference Noise Density vs Frequency. Another
unloaded condition. For loaded conditions, refer to
noise density spectrum is also shown in Figure 7.
the Load Regulation section. The stability of the
This spectrum was obtained using a 4.8
μF load
internal reference with variations in supply voltage
capacitor
at
VREFH/VREFOUT for noise filtering.
(line regulation, dc PSRR) is also exceptional. Within
Internal reference noise impacts the DAC output
the specified supply voltage range of 2.7V to 5.5V,
noise; see the DAC Noise Performance section for
the variation at VREFH/VREFOUT is less than 10μV/V;
more details.
see the Typical Characteristics.
36
Copyright
2007–2011, Texas Instruments Incorporated
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| DAC8564IDPWG4 | 功能描述:数模转换器- DAC 16B vOut DAC quad chan Ultra Lo glitch 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 |
| DAC8564IDPWR | 功能描述:数模转换器- DAC 16B Quad Ch Ultra-Lo 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 |
| DAC8564IDPWRG4 | 功能描述:数模转换器- DAC 16B vOut DAC quad chan Ultra Lo glitch 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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