參數(shù)資料
型號(hào)： AD9777EB
廠商： Analog Devices, Inc.
英文描述： 16-Bit, 160 MSPS 2X/4X/8X Interpolating Dual TxDAC+ D/A Converter
中文描述： 16位，160 MSPS的2X/4X/8X TxDAC系列插雙D / A轉(zhuǎn)換
文件頁數(shù)： 17/48頁
文件大?。?/td> 6021K
代理商： AD9777EB
REV. 0
AD9777
–17–
N1, N0
Bits 6 and 5 of the instruction byte determine the number of
bytes to be transferred during the data transfer cycle. The bit
decodes are shown in the following table:
MSB
LSB
I7
R/W
I6
N1
I5
N0
I4
A4
I3
A3
I2
A2
I1
A1
I0
A0
A4, A3, A2, A1, A0
Bits 4, 3, 2, 1, and 0 of the instruction byte determine which
register is accessed during the data transfer portion of the com-
munications cycle. For multibyte transfers, this address is the
starting byte address. The remaining register addresses are
generated by the AD9777.
SERIAL INTERFACE PORT PIN DESCRIPTIONS
SCLK (Pin 55)—Serial Clock
The Serial Clock Pin is used to synchronize data to and from the
AD9777 and to run the internal state machines. SCLK maximum
frequency is 15 MHz. All data input to the AD9777 is registered
on the rising edge of SCLK. All data is driven out of the AD9777
on the falling edge of SCLK.
CSB (Pin 56)—Chip Select
Active low input starts and gates a communication cycle. It
allows more than one device to be used on the same serial com-
munications lines. The SDO and SDIO Pins will go to a high
impedance state when this input is high. Chip select should stay
low during the entire communication cycle.
SDIO (Pin 54)—Serial Data I/O
Data is always written into the AD9777 on this pin. However, this
pin can be used as a bidirectional data line. The configuration of
this pin is controlled by Bit 7 of Register Address 00h. The default
is Logic
“
0,
”
which configures the SDIO Pin as unidirectional.
SDO (Pin 53)—Serial Data Out
Data is read from this pin for protocols that use separate lines
for transmitting and receiving data. In the case where the AD9777
operates in a single bidirectional I/O mode, this pin does not
output data and is set to a high impedance state.
MSB/LSB TRANSFERS
The AD9777 serial port can support both most significant bit
(MSB) first or least significant bit (LSB) first data formats. This
functionality is controlled by Register Address 00h, Bit 6. The
default is MSB first. When this bit is set active high, the AD9777
serial port is in LSB first format. That is, if the AD9777 is in
LSB first mode, the instruction byte must be written from least
significant bit to most significant bit. Multibyte data transfers in
MSB format can be completed by writing an instruction byte
that includes the register address of the most significant byte. In
MSB first mode, the serial port internal byte address generator
decrements for each byte required of the multibyte communica-
tion cycle. Multibyte data transfers in LSB first format can be
completed by writing an instruction byte that includes the regis-
ter address of the least significant byte. In LSB first mode, the
serial port internal byte address generator increments for each
byte required of the multibyte communication cycle.
The AD9777 serial port controller address will increment from
1Fh to 00h for multibyte I/O operations if the MSB first mode is
active. The serial port controller address will decrement from 00h
to 1Fh for multibyte I/O operations if the LSB first mode is active.
CS
SCLK
SDIO
SDO
DATA TRANSFER CYCLE
INSTRUCTION CYCLE
R/W
D7
N
I4
I3
I2
I1
I0
D6
N
D7
N
D6
N
D0
0
D1
0
D2
0
D0
0
D1
0
D2
0
I6
I5
(N)
(N)
Figure 3a. Serial Register Interface Timing MSB First
CS
SCLK
SDIO
SDO
DATA TRANSFER CYCLE
INSTRUCTION CYCLE
R/W
I6
D7
N
I5
I4
I3
I2
I1
I0
D6
N
D7
N
D6
N
D0
0
D1
0
D2
0
D0
0
D1
0
D2
0
(N)
(N)
Figure 3b. Serial Register Interface Timing LSB First
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD9777-EB 制造商:Analog Devices 功能描述:Evaluation Board For DAC, 16-Bit, 160MSPS 2/4/8 Interpolating Dual TxDAC+ D/A Converter 制造商:Analog Devices 功能描述:16BIT 160 MSPS DUAL TXDAC+ D/A CONVERTER - Bulk 制造商:Rochester Electronics LLC 功能描述:16BIT 160 MSPS DUAL TXDAC+ D/A CONVERTER - Bulk
AD9777-EBZ 功能描述:BOARD EVALUATION FOR AD9777 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 數(shù)模轉(zhuǎn)換器 (DAC) 系列:TxDAC+® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- DAC 的數(shù)量:4 位數(shù):12 采樣率（每秒）:- 數(shù)據(jù)接口:串行，SPI? 設(shè)置時(shí)間:3µs DAC 型:電流/電壓 工作溫度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581
AD9778 制造商:AD 制造商全稱:Analog Devices 功能描述:400 MHz to 6 GHz Broadband Quadrature Modulator
AD9778A 制造商:AD 制造商全稱:Analog Devices 功能描述:Dual, 12-/14-/16-Bit,1 GSPS Digital-to-Analog Converters
AD9778ABSVZ 功能描述:DAC 14BIT 1.0GSPS 100-TQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 設(shè)置時(shí)間:4.5µs 位數(shù):12 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOICN 包裝:剪切帶 (CT) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:* 其它名稱:MCP4921T-E/SNCTMCP4921T-E/SNRCTMCP4921T-E/SNRCT-ND
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