參數(shù)資料
型號(hào)： AD9953YSVZ
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 31/32頁(yè)
文件大?。?/td> 0K
描述： IC DDS DAC 14BIT 400MSPS 48-TQFP
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： 1
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(pán)
供應(yīng)商設(shè)備封裝： 48-TQFP 裸露焊盤(pán)（7x7）
包裝： 托盤(pán)
產(chǎn)品目錄頁(yè)面： 552 (CN2011-ZH PDF)
AD9953
Rev. A | Page 8 of 32
PIN FUNCTION DESCRIPTIONS
Table 3. 48-Lead TQFP/EP
Pin No.
Mnemonic
I/O
Description
1
I/O UPDATE
I
The rising edge transfers the contents of the internal buffer memory to the I/O registers. This pin
must be set up and held around the SYNC_CLK output signal.
2, 34
DVDD
I
Digital Power Supply Pins (1.8 V).
3, 33, 42
DGND
I
Digital Power Ground Pins.
4, 6, 13,
16, 18, 19,
25, 27, 29
AVDD
I
Analog Power Supply Pins (1.8 V).
5, 7, 14,
15, 17, 22,
26, 32
AGND
I
Analog Power Ground Pins.
8
OSC/REFCLK
I
Complementary Reference Clock/Oscillator Input. When the REFCLK port is operated in single-
ended mode, REFCLK should be decoupled to AVDD with a 0.1 μF capacitor.
9
OSC/REFCLK
I
Reference Clock/Oscillator Input. See Clock Input section for details on the OSCILLATOR/REFCLK
operation.
10
CRYSTAL OUT
O
Output of the Oscillator Section.
11
CLKMODESELECT
I
Control Pin for the Oscillator Section. When high, the oscillator section is enabled. When low, the
oscillator section is bypassed.
12
LOOP_FILTER
I
This pin provides the connection for the external zero compensation network of the REFCLK
multiplier’s PLL loop filter. The network consists of a 1 kΩ resistor in series with a 0.1 μF capacitor
tied to AVDD.
20
IOUT
O
Complementary DAC Output. Should be biased through a resistor to AVDD, not AGND.
21
IOUT
O
DAC Output. Should be biased through a resistor to AVDD, not AGND.
23
DACBP
I
DAC Biasline Decoupling Pin. A 0.1 μF capacitor to AGND is recommended.
24
DAC_RSET
I
A resistor (3.92 kΩ nominal) connected from AGND to DAC_RSET establishes the reference current
for the DAC.
35
PWRDWNCTL
I
Input Pin Used as an External Power-Down Control (see Table 10 for details).
36
RESET
I
Active High Hardware Reset Pin. Assertion of the RESET pin forces the AD9953 to the initial state,
as described in the I/O port register map.
37
IOSYNC
I
Asynchronous Active High Reset of the Serial Port Controller. When high, the current I/O
operation is immediately terminated, enabling a new I/O operation to commence once IOSYNC is
returned low. If unused, ground this pin; do not allow this pin to float.
38
SDO
O
When operating the I/O port as a 3-wire serial port, this pin serves as the serial data output. When
operated as a 2-wire serial port, this pin is unused and can be left unconnected.
39
CS
I
This pin functions as an active low chip select that allows multiple devices to share the I/O bus.
40
SCLK
I
This pin functions as the serial data clock for I/O operations.
41
SDIO
I/O
When operating the I/O port as a 3-wire serial port, this pin serves as the serial data input only.
When operated as a 2-wire serial port, this pin is the bidirectional serial data pin.
43
DVDD_I/O
I
Digital Power Supply (for I/O Cells Only, 3.3 V).
44
SYNC_IN
I
Input Signal Used to Synchronize Multiple AD9953s. This input is connected to the SYNC_CLK
output of a master AD9953.
45
SYNC_CLK
O
Clock Output Pin that Serves as a Synchronizer for External Hardware.
46
OSK
I
Input Pin Used to Control the Direction of the Shaped On-Off Keying Function when Programmed
for Operation. OSK is synchronous to the SYNC_CLK pin. When OSK is not programmed, this pin
should be tied to DGND.
47, 48
PS0, PS1
I
Input pin used to select one of the four internal profiles. Profile <1:0> are synchronous to the
SYNC_CLK pin. Any change in these inputs transfers the contents of the internal buffer memory
to the I/O registers (sends an internal I/O UPDATE).
<49>
AGND
I
The exposed paddle on the bottom of the package is a ground connection for the DAC and must
be attached to AGND in any board layout.
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AD9953YSVZ-REEL7 功能描述:IC DDS DAC 14BIT 1.8V 48TQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 直接數(shù)字合成 (DDS) 系列:- 產(chǎn)品變化通告:Product Discontinuance 27/Oct/2011 標(biāo)準(zhǔn)包裝:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 調(diào)節(jié)字寬（位）:32 b 電源電壓:2.97 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR)
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