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参数资料
| 型号： | MAX5858ECM+TD |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/23页 |
| 文件大小： | 0K |
| 描述： | IC DAC 10BIT DUAL 300MSPS 48TQFP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 设置时间： | 11ns |
| 位数： | 10 |
| 数据接口： | 并联 |
| 转换器数目： | 2 |
| 电压电源： | 单电源 |
| 功率耗散（最大）： | 816mW |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-TQFP 裸露焊盘 |
| 供应商设备封装： | 48-TQFP 裸露焊盘（7x7） |
| 包装： | 带卷 (TR) |
| 输出数目和类型： | 2 电流，单极 |
| 采样率（每秒）： | 300M |
MAX5858
Dual, 10-Bit, 300Msps, Current-Output DAC with
4x/2x/1x Interpolation Filters
20
______________________________________________________________________________________
Differential DC-Coupled Configuration
Figure 9 shows the MAX5858 output operating in differ-
ential, DC-coupled mode. This configuration can be
used in communication systems employing analog
quadrature upconverters and requiring a baseband
sampling, dual-channel, high-speed DAC for I/Q syn-
thesis. In these applications, information bandwidth can
extend from 10MHz down to several hundred kilohertz.
DC-coupling is desirable in order to eliminate long dis-
charge time constants that are problematic with large,
expensive coupling capacitors. Analog quadrature
upconverters have a DC common-mode input require-
ment of typically 0.7V to 1.0V. The MAX5858 differential
I/Q outputs can maintain the desired full-scale frequen-
cy spectrum at the required 0.7V to 1.0V DC common-
mode level when powered from a single 2.85V (±5%)
supply. The MAX5858 meets this low-power require-
ment with minimal reduction in dynamic range while
eliminating the need for level-shifting resistor networks.
Power Supplies, Bypassing,
Decoupling, and Layout
Grounding and power-supply decoupling strongly influ-
ence the MAX5858 performance. Unwanted digital
crosstalk can couple through the input, reference,
power-supply, and ground connections, which can
affect dynamic specifications, like signal-to-noise ratio
or spurious-free dynamic range. In addition, electro-
magnetic interference (EMI) can either couple into or
be generated by the MAX5858. Observe the grounding
and power-supply decoupling guidelines for high-
speed, high-frequency applications. Follow the power
supply and filter configuration to realize optimum
dynamic performance.
Use of a multilayer printed circuit (PC) board with sepa-
rate ground and power-supply planes is recommend-
ed. Run high-speed signals on lines directly above the
ground plane. The MAX5858 has separate analog and
digital ground buses (AGND, CGND, and DGND,
DA0–DA9
10
MAX5858
1/2
50
100
50
OUTPA
OUTNA
VOUTA,
SINGLE ENDED
DB0–DB9
10
MAX5858
1/2
50
100
50
OUTPB
OUTNB
VOUTB,
SINGLE ENDED
CVDD
DVDD
AVDD
CGND
DGND
AGND
Figure 8. Application with Output Transformer Performing
Differential to Single-Ended Conversion
DA0–DA9
10
MAX5858
1/2
50
50
CVDD
DVDD
AVDD
CGND
DGND
AGND
OUTPA
OUTNA
DB0–DB9
10
MAX5858
50
50
OUTPB
OUTNB
Figure 9. Application with DC-Coupled Differential Outputs
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相关代理商/技术参数 |
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| MAX5858EVKIT | 制造商:Maxim Integrated Products 功能描述:DUAL-10-BIT, 300MSPS, CURRENT-OUTPUT DAC WITH - Bulk |
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| MAX5859EVKIT | 制造商:Maxim Integrated Products 功能描述:16 PINS TSSOP PKG - Bulk |
| MAX5859EVKIT-W | 制造商:Maxim Integrated Products 功能描述:- Bulk |
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