參數(shù)資料
型號(hào)： MAX5898EGK+D
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 4/33頁(yè)
文件大小： 0K
描述： IC DAC 16BIT DUAL 500MSPS 68-QFN
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 30
設(shè)置時(shí)間： 11ns
位數(shù)： 16
數(shù)據(jù)接口： 并聯(lián)
轉(zhuǎn)換器數(shù)目： 2
電壓電源： 模擬和數(shù)字
功率耗散（最大）： 831mW
工作溫度： -40°C ~ 85°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 68-VFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 68-QFN 裸露焊盤(pán)（10x10）
包裝： 管件
輸出數(shù)目和類(lèi)型： 2 電流，單極
采樣率（每秒）： 500M
MAX5898
16-Bit, 500Msps, Interpolating and Modulating
Dual DAC with Interleaved LVDS Inputs
12
______________________________________________________________________________________
Detailed Description
The MAX5898 dual, 500Msps, high-speed, 16-bit, cur-
rent-output DAC provides superior performance in com-
munication systems requiring low-distortion analog-signal
reconstruction. The MAX5898 combines two DAC cores
with 8x/4x/2x programmable digital interpolation filters, a
digital quadrature modulator, an SPI-compatible serial
interface for programming the device, and an on-chip
1.2V reference. Individual DAC channel gain and offset
adjustments are available to compensate for downstream
signal-path imbalances. The full-scale output current
range is adjustable from 2mA to 20mA to optimize power
dissipation and gain control.
Each channel contains three selectable interpolating fil-
ters making the MAX5898 capable of 2x, 4x, 8x, or no
interpolation, which allows for low input data rates and
high DAC update rates. When operating in 8x interpola-
tion mode, the interpolator increases the DAC conversion
rate by a factor of eight, providing an eight-fold increase
in separation between the reconstructed waveform spec-
trum and its first image. The MAX5898 accepts either
two’s complement or offset binary input data format on a
single interleaved LVDS input bus.
The MAX5898 includes modulation modes at fIM / 2 and
fIM / 4, where fIM is the data rate at the input of the mod-
ulator. If 2x interpolation is used, this data rate is 2x the
input data rate. If 4x or 8x interpolation is used, this data
rate is 4x the input data rate. Table 1 summarizes the
modulator operating data rates.
The power-down modes can be used to turn off each
DAC’s output current or the entire digital section.
Programming both DACs into power-down simultane-
ously powers down the digital interpolation filters. Note
that the SPI section is always active.
The analog and digital sections of the MAX5898 have
separate power-supply inputs (AVDD3.3, AVDD1.8,
Functional Diagram
IDAC
OUTIP
OUTIN
QDAC
OUTQP
OUTQN
SELIQ
D0–D15
SERIAL INTERFACE
CONTROL REGISTERS
REFERENCE
MODULATOR
CLOCK BUFFERS
AND DIVIDERS
CLKP
CLKN
RESET
fCLK
fDAC
DA
TA
SYNCH
AND
DEMUX
MUX
Q
I
Q
I
2x
INTERPOLA
TING
FIL
TER
2x
INTERPOLA
TING
FIL
TER
2x
INTERPOLA
TING
FIL
TER
2x
INTERPOLA
TING
FIL
TER
2x
INTERPOLA
TING
FIL
TER
2x
TING
FIL
TER
MUX
DIGITAL
OFFSET
ADJUST
DIGITAL
OFFSET
ADJUST
DIGITAL
GAIN
ADJUST
/2
DOUT
DIN
CS
SCLK
DACREF
FSADJ
REFIO
DATACLK
∑
fIM / 2, fIM / 4
∑
DIGITAL
GAIN
ADJUST
/2
MAX5898
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MAX5898EGK-TD 功能描述:數(shù)模轉(zhuǎn)換器- DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類(lèi)型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
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