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參數(shù)資料
| 型號(hào)： | AD9952YSVZ-REEL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 6/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DDS DAC 14BIT 1.8V 48TQFP |
| 產(chǎn)品培訓(xùn)模塊： | Direct Digital Synthesis Tutorial Series (1 of 7): Introduction Direct Digital Synthesizer Tutorial Series (7 of 7): DDS in Action Direct Digital Synthesis Tutorial Series (3 of 7): Angle to Amplitude Converter Direct Digital Synthesis Tutorial Series (6 of 7): SINC Envelope Correction Direct Digital Synthesis Tutorial Series (4 of 7): Digital-to-Analog Converter Direct Digital Synthesis Tutorial Series (2 of 7): The Accumulator |
| 標(biāo)準(zhǔn)包裝： | 500 |
| 分辨率（位）： | 14 b |
| 主 fclk： | 400MHz |
| 調(diào)節(jié)字寬（位）： | 32 b |
| 電源電壓： | 1.71 V ~ 1.96 V |
| 工作溫度： | -40°C ~ 105°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-TQFP 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 48-TQFP 裸露焊盤（7x7） |
| 包裝： | 帶卷 (TR) |
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AD9952
Rev. B | Page 14 of 28
Table 4. Clock Input Modes of Operation
CFR1 [4]
CLKMODESELECT
CFR2 [7:3]
Oscillator Enabled
System Clock
Frequency Range (MHz)
Low
High
3 < M < 21
Yes
FCLK = F
OSC × M
80 < FCLK < 400
Low
High
M < 4 or M > 20
Yes
FCLK = F
OSC
20 < FCLK < 30
Low
3 < M < 21
No
FCLK = F
OSC × M
80 < FCLK < 400
Low
M < 4 or M > 20
No
FCLK = F
OSC
10 < FCLK < 400
High
X
No
FCLK = 0
N/A
DAC Output
The AD9952 incorporates an integrated 14-bit current output
DAC. Unlike most DACs, this output is referenced to AVDD,
not AGND.
Two complementary outputs provide a combined full-scale
output current (IOUT). Differential outputs reduce the amount of
common-mode noise that might be present at the DAC output,
offering the advantage of an increased signal-to-noise ratio. The
full-scale current is controlled by an external resistor (RSET)
connected between the DAC_RSET pin and the DAC ground
(AGND_DAC). The full-scale current is proportional to the
resistor value as follows:
OUT
SET
I
R
/
19
.
39
=
The maximum full-scale output current of the combined DAC
outputs is 15 mA, but limiting the output to 10 mA provides the
best spurious-free dynamic range (SFDR) performance. The DAC
output compliance range is AVDD + 0.5 V to AVDD – 0.5 V.
Voltages developed beyond this range cause excessive DAC
distortion and could potentially damage the DAC output
circuitry. Proper attention should be paid to the load termination
to keep the output voltage within this compliance range.
Comparator
Many applications require a square wave signal rather than a
sine wave. For example, in most clocking applications a high
slew rate helps to reduce phase noise and jitter. To support these
applications, the AD9952 includes an on-chip comparator. The
comparator has a bandwidth greater than 200 MHz and a
common-mode input range of 1.3 V to 1.8 V. By setting the
comparator power-down bit, CFR1 [6], the comparator can be
turned off to save on power consumption.
Serial I/O Port
The AD9952 serial port is a flexible, synchronous serial
communications port that allows easy interface to many
industry-standard microcontrollers and microprocessors. The
serial I/O port is compatible with most synchronous transfer
formats, including both the Motorola 6905/11 SPI and Intel
8051 SSR protocols.
The interface allows read/write access to all registers that configure
the AD9952. MSB first or LSB first transfer formats are supported.
The AD9952 serial interface port can be configured as a single pin
I/O (SDIO) that allows a 2-wire interface or two unidirectional pins
for in/out (SDIO/SDO), which in turn enable a 3-wire interface.
Two optional pins, IOSYNC and CS
Register Map and Descriptions
, enable greater flexibility for
system design in the AD9952. Please see the Serial Port Operation
section for details on how to program the AD9952 through the
serial I/O port.
The register map is listed in Table 5.
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相關(guān)代理商/技術(shù)參數(shù) |
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| AD9953 | 制造商:AD 制造商全稱:Analog Devices 功能描述:400 MSPS 14-Bit, 1.8V CMOS Direct Digital Synthesizer |
| AD9953/PCB | 制造商:Analog Devices 功能描述:400 MSPS, 14BIT DGTL SYNTHESIZER - Bulk |
| AD9953ASV | 制造商:AD 制造商全稱:Analog Devices 功能描述:400 MSPS 14-Bit, 1.8V CMOS Direct Digital Synthesizer |
| AD9953PCB | 制造商:AD 制造商全稱:Analog Devices 功能描述:400 MSPS 14-Bit, 1.8V CMOS Direct Digital Synthesizer |
| AD9953YSV | 制造商:Analog Devices 功能描述:Direct Digital Synthesizer 400MHz 1-DAC 14-Bit Serial 48-Pin TQFP EP 制造商:Rochester Electronics LLC 功能描述:AD9953 400 MSPS DDS W/ 14 BIT DAC - Bulk 制造商:Analog Devices 功能描述:IC DDS 400MSPS SMD 9953 TQFP48 |
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