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參數(shù)資料
| 型號： | MAX5885EGM+TD |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 18/18頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC 16BIT 3.3V 200MSPS 48-QFN |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 設(shè)置時間： | 11ns |
| 位數(shù)： | 16 |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 電壓電源： | 模擬和數(shù)字 |
| 功率耗散（最大）： | 135mW |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-QFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 48-QFN-EP（7x7） |
| 包裝： | 帶卷 (TR) |
| 輸出數(shù)目和類型： | 2 電流，單極 |
| 采樣率（每秒）： | 200M |
MAX5885
3.3V, 16-Bit, 200Msps High Dynamic
Performance DAC with CMOS Inputs
_______________________________________________________________________________________
9
Detailed Description
Architecture
The MAX5885 is a high-performance, 16-bit, current-
steering DAC (Figure 1) capable of operating with
clock speeds up to 200MHz. The converter consists of
separate input and DAC registers, followed by a cur-
rent-steering circuit. This circuit is capable of generat-
ing differential full-scale currents in the range of 2mA to
20mA. An internal current-switching network in combi-
nation with external 50
termination resistors convert
the differential output currents into a differential output
voltage with a peak-to-peak output voltage range of
0.1V to 1V. An integrated 1.2V bandgap reference,
control amplifier, and user-selectable external resistor
determine the data converter’s full-scale output range.
Reference Architecture and Operation
The MAX5885 supports operation with the on-chip 1.2V
bandgap reference or an external reference voltage
source. REFIO serves as the input for an external, low-
impedance reference source, and as the output if the
DAC is operating with the internal reference. For stable
operation with the internal reference, REFIO should be
decoupled to AGND with a 0.1F capacitor. Due to its
limited output drive capability, REFIO must be buffered
with an external amplifier, if heavier loading is required.
The MAX5885’s reference circuit (Figure 2) employs a
control amplifier, designed to regulate the full-scale
current IOUT for the differential current outputs of the
DAC. Configured as a voltage-to-current amplifier, the
output current can be calculated as follows:
IOUT = 32 IREFIO - 1 LSB
IOUT = 32 IREFIO - (IOUT / 2
16)
where IREFIO is the reference output current (IREFIO =
VREFIO/RSET) and IOUT is the full-scale output current
of the DAC. Located between FSADJ and DACREF,
RSET is the reference resistor, which determines the
amplifier’s output current for the DAC. See Table 1 for a
matrix of different IOUT and RSET selections.
Analog Outputs (IOUTP, IOUTN)
The MAX5885 outputs two complementary currents
(IOUTP, IOUTN) that can be operated in a single-
ended or differential configuration. A load resistor can
convert these two output currents into complementary
single-ended output voltages. The differential voltage
existing between IOUTP and IOUTN can also be con-
verted to a single-ended voltage using a transformer or
a differential amplifier configuration. If no transformer is
used, the output should have a 50
termination to the
analog ground and a 50
resistor between the outputs.
0.1
F
1.2V
REFERENCE
10k
IREF
RSET
DACREF
FSADJ
REFIO
IREF = VREFIO/RSET
CURRENT-STEERING
DAC
AVDD
IOUTP
IOUTN
Figure 2. Reference Architecture, Internal Reference
Configuration
RSET (k
)
FULL-SCALE CURRENT
IOUT (mA)
REFERENCE CURRENT
IREF (A)
CALCULATED
1% EIA STD
OUTPUT VOLTAGE
VIOUTP/N* (mVP-P)
2
62.5
19.2
19.1
100
5
156.26
7.68
7.5
250
10
312.5
3.84
3.83
500
15
468.75
2.56
2.55
750
20
625
1.92
1.91
1000
Table 1. IOUT and RSET Selection Matrix Based on a Typical 1.200V Reference Voltage
*Terminated into a 50
load.
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| MAX5885EVKIT | 功能描述:數(shù)模轉(zhuǎn)換器- DAC Evaluation Kit for the MAX5883 MAX5884 MAX5885 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 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間: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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| MAX5886EGK+D | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 12-Bit 500Msps 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 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間: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 |
| MAX5886EGK+TD | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 12-Bit 500Msps 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 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間: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 |
| MAX5886EGK-D | 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 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間: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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