参数资料
型号: LTC1592AIG
厂商: Linear Technology
文件页数: 4/16页
文件大小: 0K
描述: IC D/A CONV 16BIT SOFTSPAN16SSOP
产品培训模块: LTC275x 18-Bit DAC
标准包装: 77
系列: SoftSpan™
设置时间: 2µs
位数: 16
数据接口: 串行,SPI?
转换器数目: 1
电压电源: 单电源
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-SSOP(0.209",5.30mm 宽)
供应商设备封装: 16-SSOP
包装: 管件
输出数目和类型: 2 电流,单极;2 电流,双极
采样率(每秒): *
12
LTC1588/LTC1589/LTC1592
1588992fa
While not directly addressed by the simple equations in
Tables 2 and 3, temperature effects can be handled just as
easily for unipolar and bipolar applications. First, consult
an op amp’s data sheet to find the worst-case VOS and IB
over temperature. Then, plug these numbers in the VOS
and IB equations from Table 3 and calculate the tempera-
ture induced effects.
For applications where fast settling time is important, Appli-
cation Note 74, entitled “
Component and Measurement
Advances Ensure 16-Bit DAC Settling Time,” offers a thor-
ough discussion of 16-bit DAC settling time and op amp
selection.
Precision Voltage Reference Considerations
Much in the same way selecting an operational amplifier
for use with the LTC1592 is critical to the performance of
the system, selecting a precision voltage reference also
requires due diligence. The output voltage of the LTC1592
is directly affected by the voltage reference; thus, any
voltage reference error will appear as a DAC output voltage
error.
There are three primary error sources to consider when
selecting a precision voltage reference for 16-bit applica-
tions: output voltage initial tolerance, output voltage tem-
perature coefficient and output voltage noise.
Initial reference output voltage tolerance, if uncorrected,
generates a full-scale error term. Choosing a reference
APPLICATIO S I FOR ATIO
WU
UU
Table 4. Partial List of LTC Precision Amplifiers Recommended for Use with the LTC1588/LTC1589/LTC1592,
with Relevant Specifications
AMPLIFIER SPECIFICATIONS
VOLTAGE
CURRENT
SLEW
GAIN BANDWIDTH
tSETTLING
POWER
VOS
IB
AOL
NOISE
RATE
PRODUCT
with LTC1592
DISSIPATION
AMPLIFIER
V
nA
V/mV
nV/
√Hz
pA/
√Hz
V/
s
MHz
smW
LT1001
25
2
800
10
0.12
0.25
0.8
120
46
LT1097
50
0.35
1000
14
0.008
0.2
0.7
120
11
LT1112 (Dual)
60
0.25
1500
14
0.008
0.16
0.75
115
10.5/Op Amp
LT1124 (Dual)
70
20
4000
2.7
0.3
4.5
12.5
19
69/Op Amp
LT1468
75
10
5000
5
0.6
22
90
2.5
117
LT1469 (Dual)
125
10
2000
5
0.6
22
90
2.5
123/Op Amp
()
5V
VREF
()
5V
VREF
()
16.5k
AVOL1
OP AMP
VOS1 (mV)
IB1 (nA)
AVOL1 (V/V)
VOS2 (mV)
IB2 (mV)
AVOL2 (V/V)
VOS1 2.4
IB1 0.0003
A1
0
INL (LSB)
()
5V
VREF
()
5V
VREF
()
1.5k
AVOL1
()
66k
AVOL2
()
131k
AVOL1
()
131k
AVOL1
()
131k
AVOL2
()
131k
AVOL2
VOS1 0.6
IB1 0.00008
A2
0
DNL (LSB)
()
5V
VREF
()
5V
VREF
VOS1 13.2
IB1 0.13
0
UNIPOLAR
OFFSET (LSB)
()
5V
VREF
()
5V
VREF
()
5V
VREF
VOS1 13.2
IB1 0.0018
A5
VOS2 26.2
IB2 0.1
BIPOLAR GAIN
ERROR (LSB)
()
5V
VREF
()
5V
VREF
()
5V
VREF
()
5V
VREF
A3 VOS1 19.8
IB1 0.01
0
A4 VOS2 13.1
A4 IB2 0.05
A4
BIPOLAR ZERO
ERROR (LSB)
UNIPOLAR GAIN
ERROR (LSB)
()
5V
VREF
()
5V
VREF
()
5V
VREF
()
5V
VREF
()
5V
VREF
VOS1 13.2
IB1 0.0018
A5
VOS2 26.2
IB2 0.1
Table 3. Easy-to-Use Equations Determine Op Amp Effects on DAC Accuracy in All Output Ranges
Table 2. Variables for Each Output Range That Adjust the
Equations in Table 3
OUTPUT RANGE
A1
A2
A3
A4
A5
5V
1.1
2
1
10V
2.2
3
1.5
±5V
2
1.2
1
1.5
±10V
4
1.2
1
2.5
±2.5V
1
1.6
1
–2.5V to 7.5V
1.9
3
1
0.5
1.5
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