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参数资料
| 型号： | DAC5687IPZP |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | DAC |
| 英文描述： | PARALLEL, WORD INPUT LOADING, 0.0104 us SETTLING TIME, 16-BIT DAC, PQFP100 |
| 封装： | GREEN, PLASTIC, HTQFP-100 |
| 文件页数： | 13/79页 |
| 文件大小： | 2490K |
| 代理商： | DAC5687IPZP |
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Peak-to-Average Ratio dB
3
5
7
9
11
13
15
Cummulative
Complementary
Distribution
Function
G041
106
1 Carrier
2 Carriers
4 Carriers
104
102
100
DETAILED DESCRIPTION
Modes of Operation
SLWS164E – FEBRUARY 2005 – REVISED SEPTEMBER 2006
Figure 28. WCDMA TM1 Cumulative Complementary Distribution Function for 1, 2, and 4 Carriers
The DAC5687 has six digital signal processing blocks: FIR1 and FIR2 (interpolate-by-two digital filters), FMIX
(fine frequency mixer), QMC (quadrature modulation phase correction), FIR3 (interpolate-by-two digital filter) and
CMIX (coarse frequency mixer). The modes of operation, listed in Table 1, enable or bypass the blocks to
produce different results. The modes are selected by registers CONFIG1, CONFIG2, and CONFIG3 (0x02, 0x03,
and 0x04). Block diagrams for each mode (X2, X4, X4L, and X8) are shown in Figure 29 through Figure 32.
Table 1. DAC5687 Modes of Operation
MODE
FIR1
FIR2
FMIX
QMC
FIR3
CMIX
FULL BYPASS
–
X2
–
ON
–
X2 FMIX
–
ON
–
ON
–
X2 QMC
–
ON
–
X2 FMIX QMC
–
ON
–
X2 CMIX
–
ON
X2 FMIX CMIX
–
ON
–
ON
X2 QMC CMIX
–
ON(1)
ON
X2 FMIX QMC CMIX
–
ON
ON(1)
ON
X4
ON
–
X4 FMIX(2)
ON
–
X4 QMC(2)
ON
–
ON
–
X4 FMIX QMC
ON
–
X4 CMIX
ON
–
ON
X4L
ON
–
ON
–
(1)
The QMC phase correction is eliminated by the CMIX, so the QMC phase should be set to zero. The
QMC gain settings can still be used to adjust the signal path gain as needed.
(2)
20
Copyright 2005–2006, Texas Instruments Incorporated
Product Folder Link(s): DAC5687
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| DAC5687IPZPRG4 | 功能描述:数模转换器- DAC 16-bit 500 MSPS 2-8x Interpolat’g Dual-Ch 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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