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參數(shù)資料
| 型號(hào)： | AD9148BBPZRL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 36/72頁 |
| 文件大小： | 0K |
| 描述： | IC DAC 16BIT SPI/SRL 196BGA |
| 標(biāo)準(zhǔn)包裝： | 1,500 |
| 系列： | TxDAC+® |
| 設(shè)置時(shí)間： | 20ns |
| 位數(shù)： | 16 |
| 數(shù)據(jù)接口： | 串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 4 |
| 電壓電源： | 單電源 |
| 功率耗散（最大）： | 2.67W |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 196-LFBGA 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 196-BGA |
| 包裝： | 帶卷 (TR) |
| 輸出數(shù)目和類型： | 4 電流，單極 |
| 采樣率（每秒）： | 1G |
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Data Sheet
AD9148
Rev. B | Page 41 of 72
BYTE MODE
In byte mode, a FRAME signal must be provided along with the
DCI signal and the data. The most significant byte of the data
should correspond with DCI being high, and the least significant
byte of the data should correspond with DCI being low. The
FRAME signal indicates to which DAC the data is intended.
When FRAME is high, data on the top half of the port (A[15:8])
is sent to DAC 1 and data on the bottom half of the port (A[7:0]) is
sent to DAC 3. When the FRAME is low, data on the top half of
the port is sent to DAC 2 and data on the bottom half of the port
is sent to DAC 4. This pattern repeats continuously as shown in
FRAMEA
A[15:8]
DAC1H
DAC1L
DAC2H
DAC2L
DAC1H
DAC1L
DAC2H
DAC2L
A[7:0]
DAC3H
DAC3L
DAC4H
DAC4L
DAC3H
DAC3L
DAC4H
DAC4L
DCIA
08910-
048
Figure 48. Timing Diagram for Byte Mode
The AD9148 also includes a byte swap feature. By default, the
bytes should be formatted as an MSB sent to Bit 15 on Bus 1 and
Bit 7 on Bus 2. When byte swap is enabled (Register 0x03[2]), an
MSB should be sent to Bit 8 on Bus 1 and Bit 0 on Bus 2. This
is described in Table 14.
Table 14. Byte Swap Formatting
Byte Swap
Byte
A[15:8]
A[7:0]
0
MSB
Data Set 1[15:8]
Data Set 2[15:8]
0
LSB
Data Set 1[7:0]
Data Set 2[7:0]
1
MSB
Data Set 1[8:15]
Data Set 2[8:15]
1
LSB
Data Set 1[0:7]
Data Set 2[0:7]
DATA INTERFACE OPTIONS
To enable optimization of the data interface, some additional
options have been provided in the following registers:
Data format (Register 0x03)
Data receiver control (Register 0x14)
Data receiver status (Register 0x15)
Depending on the data rate and DCI vs. data skew, the internal
DCI can be inverted to meet the valid data timing window.
RECOMMENDED FRAME INPUT BIAS CIRCUITRY
Because the frame signal can be used as a reference clock in the
byte mode or as a trigger to reset the FIFO, it is recommended
that the frame input be tied to LVDS logic low when it is not
used (that is, when it is not driven by an ASIC or FPGA). The
external bias circuit shown in Figure 49 is recommended for
this purpose. This bias circuit applies to both FRAMEA and
FRAMEB ports.
08910-
145
100
150
51
AD9148
FRAMEP
FRAMEN
DVDD18
(1.8V)
Figure 49. External Bias Circuit
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| AD9148-EBZ | 功能描述:BOARD EVALUATION FOR AD9148 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 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 |
| AD9148-M5372-EBZ | 功能描述:BOARD EVAL FOR AD9149, ADL5372 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 數(shù)模轉(zhuǎn)換器 (DAC) 系列:* 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 |
| AD9148-M5375-EBZ | 功能描述:BOARD EVAL FOR AD9149, ADL5375 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 數(shù)模轉(zhuǎn)換器 (DAC) 系列:* 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 |
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