参数资料
型号: LTC1821BCGW#TRPBF
厂商: Linear Technology
文件页数: 11/16页
文件大小: 0K
描述: IC D/A CONV 16BIT PRECISE 36SSOP
产品培训模块: LTC275x 18-Bit DAC
标准包装: 1,000
设置时间: 2µs
位数: 16
数据接口: 并联
转换器数目: 1
电压电源: 单电源
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 36-BSOP(0.295",7.50mm 宽)
供应商设备封装: 36-SSOP
包装: 带卷 (TR)
输出数目和类型: 1 电压,单极;1 电压,双极
采样率(每秒): *
4
LTC1821
Note 8: To 0.0015% for a full-scale change, measured from the rising
edge of LD.
Note 9: REF = 0V. DAC register contents changed from all 0s to all 1s or all
1s to all 0s. LD low and WR high.
Note 10: Midscale transition code: 0111 1111 1111 1111 to
1000 0000 0000 0000. Unipolar mode, CFEEDBACK = 33pF.
Note 11: R1 and R2 are measured between R1 and RCOM, REF and RCOM.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
±1LSB = ±0.0015% of full scale = ±15.3ppm of full scale.
Note 3: Using internal feedback resistor.
Note 4: Guaranteed by design, not subject to test.
Note 5: IOUT with DAC register loaded to all 0s.
Note 6: Typical temperature coefficient is 100ppm/
°C.
Note 7: Measured in unipolar mode.
ELECTRICAL CHARACTERISTICS
TYPICAL PERFOR A CE CHARACTERISTICS
UW
TIME (
s)
0
OUTPUT
VOLTAGE
(mV)
–10
0
10
0.6
1.0
1821 G01
–20
–30
–40
0.2
0.4
0.8
20
30
40
CFEEDBACK = 30pF
VREF = 10V
1nV-s TYPICAL
FREQUENCY (Hz)
–90
SIGNAL/(NOISE
+
DISTORTION)
(dB)
–70
–50
–40
10
1k
10k
100k
1821 G03
–110
100
–60
–80
–100
VCC = 5V
CFEEDBACK = 30pF
REFERENCE = 6VRMS
500kHz FILTER
80kHz FILTER
30kHz FILTER
LD PULSE
5V/DIV
GATED
SETTLING
WAVEFORM
500
V/DIV
500ns/DIV
1821 G02
VREF = –10V
CFEEDBACK = 20pF
0V TO 10V STEP
FREQUENCY (Hz)
–90
SIGNAL/(NOISE
+
DISTORTION)
(dB)
–70
–50
–40
10
1k
10k
100k
1821 G04
–110
100
–60
–80
–100
VCC = 5V USING AN LT1468
CFEEDBACK = 15pF
REFERENCE = 6VRMS
500kHz FILTER
80kHz FILTER
30kHz
FILTER
FREQUENCY (Hz)
–90
SIGNAL/(NOISE
+
DISTORTION)
(dB)
–70
–50
–40
10
1k
10k
100k
1821 G05
–110
100
–60
–80
–100
VCC = 5V USING AN LT1468
CFEEDBACK = 15pF
REFERENCE = 6VRMS
500kHz FILTER
80kHz FILTER
30kHz FILTER
INTPUT VOLTAGE (V)
0
SUPPLY
CURRENT
(mA)
3
4
5
4
1821 G06
2
1
0
1
2
3
5
VCC = 5V
ALL DIGITAL INPUTS
TIED TOGETHER
Midscale Glitch Impulse
Unipolar Multiplying Mode
Signal-to-(Noise + Distortion)
vs Frequency
Full-Scale Setting Waveform
Bipolar Multiplying Mode
Signal-to-(Noise + Distortion)
vs Frequency, Code = All Zeros
Bipolar Multiplying Mode
Signal-to-(Noise + Distortion)
vs Frequency, Code = All Ones
VCC Supply Current vs Digital
Input Voltage
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