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参数资料
| 型号： | MAX5858AECM+D |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 15/25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： | 250 |
| 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： | 托盘 |
| 输出数目和类型： | 2 电流，单极 |
| 采样率（每秒）： | 300M |
MAX5858A
Dual, 10-Bit, 300Msps, DAC with 4x/2x/1x
Interpolation Filters and PLL
22
______________________________________________________________________________________
Differential DC-Coupled Configuration
Figure 9 shows the MAX5858A 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 synthe-
sis. 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 MAX5858A differential
I/Q outputs can maintain the desired full-scale original
level at the required 0.7V to 1.0V DC common-mode volt-
age when powered from a single 2.85V (±5%) supply.
The MAX5858A meets this low-power requirement 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 MAX5858A 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 MAX5858A. Observe the ground-
ing and power-supply decoupling guidelines for high-
speed, high-frequency applications. Follow the power
supply and filter configuration to achieve 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 MAX5858A has separate analog
and digital ground buses (AGND, PGND, and DGND,
respectively). Provide separate analog, digital, and
clock ground sections on the PC board with only one
point connecting the three planes. The ground connec-
tion points should be located underneath the device
and connected to the exposed paddle. Run digital sig-
nals above the digital ground plane and analog/clock
signals above the analog/clock ground plane. Digital
signals should be kept away from sensitive analog,
clock, and reference inputs. Keep digital signal paths
short and metal trace lengths matched to avoid propa-
gation delay and data skew mismatch.
The MAX5858A includes three separate power-supply
inputs: analog (AVDD), digital (DVDD), and clock
(PVDD). Use a single linear regulator power source to
branch out to three separate power-supply lines (AVDD,
DVDD, PVDD) and returns (AGND, DGND, PGND). Filter
each power-supply line to the respective return line
using LC filters comprising ferrite beads and 10F
capacitors. Filter each supply input locally with 0.1F
ceramic capacitors to the respective return lines.
Note: To maintain the dynamic performance of the
Electrical Characteristics, ensure the voltage difference
between DVDD, AVDD, and PVDD does not exceed 150mV.
Thermal Characteristics and Packaging
Thermal Resistance
48-lead TQFP-EP:
θJA = 27.6°C/W
Keep the device junction temperature below +125°C to
meet specified electrical performance. Lower the
power-supply voltage to maintain specified perfor-
mance when the DAC update rate approaches
300Msps and the ambient temperature equals +85°C.
DA0–DA9
10
MAX5858A
1/2
50
50
PVDD
DVDD
AVDD
PGND
DGND
AGND
OUTPA
OUTNA
DB0–DB9
10
MAX5858A
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 |
参数描述 |
|---|---|
| MAX5858AECM-TD | 功能描述:数模转换器- DAC 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 |
| MAX5858AEVKIT | 制造商:Maxim Integrated Products 功能描述:DUAL-10-BIT, 300MSPS, CURRENT-OUTPUT DAC WITH - Bulk |
| MAX5858ECM | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX5858ECM+D | 功能描述:数模转换器- DAC 10-Bit 2Ch 300Msps DAC 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 |
| MAX5858ECM+TD | 功能描述:数模转换器- DAC 10-Bit 2Ch 300Msps DAC 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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