AD8322: 5 V CATV Line Driver with Coarse Step Output Power Control
The AD8322 is a low cost digitally controlled variable gain amplifier optimized for coaxial line driving applications such as cable modems that are designed to the MCNS-DOCSIS upstream standard. A ...More
AD8322: 5 V CATV Line Driver with Coarse Step Output Power Control
Product Description
The AD8322 is a low cost digitally controlled variable gain amplifier optimized for coaxial line driving applications such as cable modems that are designed to the MCNS-DOCSIS upstream standard. A 8-bit serial word determines the desired output gain over a 42 dB range resulting in gain changes of 6 dB/LSB.
The AD8322 comprises a digitally controlled variable attenuator of 0 dB to -42 dB, which is preceded by a low noise, fixed gain buffer and is followed by a low distortion high power amplifier. When used in a DOCSIS modem application the AD8322 works with the attenuator available on some demodulators to support the 50 dB range required by DOCSIS. The AD8322 accepts a differential or single-ended input signal. The output is specified for driving a 75 Ohm load, such as coaxial cable, although the AD8322 is capable of driving other loads.
An evaluation board is available for this product and may be ordered using the following product number AD8322-EVAL.
Features
- Supports DOCSIS Standard for Reverse Path Transmission
- Gain Programmable in 6 dB Steps Over a 42 dB Range
- Low Distortion at 60 dBmV Output
–58 dBc SFDR at 21 MHz
–56 dBc SFDR at 42 MHz
- Output Noise Level
–46 dBmV in 160 kHz Bandwidth - Maintains 75Ω Output Impedance
Power-Up and Power-Down Condition - 180 MHz Bandwidth
- 5 V Supply Operation
- Supports SPI Interfaces
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| Part# | Gain Control | -3 dB BW (MHz) | Gain Low End (dB) | Gain High End (dB) | Number of Channels | Spectral Noise (nV/rtHz) | Supply Voltage (V) | Supply Current (max) | Gain Accuracy (dB) | 1 dB Comp Point (dBm) | Package | Price* (1000-4999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AD600 | Analog | 35 | 0 | +40 | 2 | 1.4 | ±5 | 14mA | - | - | - | $16.61 |
| AD602 | Analog | 35 | -10 | +30 | 2 | 1.4 | ±5 | 14mA | - | - | - | $13.36 |
| AD603 | Analog | 90 | -11 | +31 | 1 | 1.4 | ±5 | 20mA | ±0.5 | - | 8-Lead DIP, 8-Lead SOIC | $4.40 |
| AD604 | Analog | 40 | 0 | +48 | 2 | 0.8 | ±5 | 31mA | ±0.3 | 15 | 24-Lead SOIC, 24-Lead SSOP | $16.45 |
| AD605 | Analog | 40 | -14 | +34 | 2 | 1.8 | +5 | 23mA | ±0.2 | 15 | 16-Lead SOIC | $9.91 |
| AD8260 | Digital | 180 | -6 | +24 | 1 | 2.4 | +3.3 | 28mA | +0.25 | - | - | $3.84 |
| AD8320 | Digital | 150 | -10 | +26 | 1 | 53 | +12 | 105mA | ±0.2 | 22.5 | 20-Lead SOIC | - |
| AD8321 | Digital | 120 | -27.4 | +26 | 1 | 20 | +9 | 90mA | ±1 | 19.5 | 20-Lead SOIC | $4.40 |
| AD8322 | Digital | 180 | -12.6 | +29.5 | 1 | 64 | +5 | 113mA | ±2 | 19 | 28-Lead TSSOP | $3.19 |
| AD8323 | Digital | 100 | -26 | +27.5 | 1 | - | +5 | - | - | - | 28-Lead TSSOP | $3.34 |
| AD8324 | Digital | 100 | -25.5 | +33.5 | 1 | 157 | +3.3 | 207mA | ±1 | 21 | 20-Lead LFCSP, 20-Lead QSOP | $1.73 |
| AD8325 | Digital | 100 | -29.5 | +30 | 1 | 56 | +5 | 133mA | ±1 | 18.5 | 28-Lead TSSOP | $3.34 |
| AD8326 | Digital | 100 | -26 | +27.5 | 1 | 100 | ±5 | 157mA | ±1 | 26.5 | 28-Lead PSOP, 28-Lead TSSOP | $3.95 |
| AD8327 | Digital | 160 | -18 | +30 | 1 | 64 | +5 | 105mA | ±1 | 18 | 20-Lead TSSOP | $3.80 |
| AD8328 | Digital | 107 | -27.5 | +31.5 | 1 | 135 | - | 120mA | ±1 | 18.4 | 20-Lead LFCSP, 20-Lead QSOP | $1.92 |
| AD8330 | Analog | 150 | 0 | +50 | 1 | 5 | +6 | 20mA | ±0.5 | - | 16-Lead LFCSP, 16-Lead QSOP | $4.44 |
| AD8331 | Analog | 120 | -4.5 | +43 | 1 | 0.74 | +5 | 25mA | +0.5 | 7 | - | $5.45 |
| AD8332 | Analog | 120 | -4.5 | +43.5 | 2 | 0.74 | +5 | 58mA | +0.5 | 7 | 28-Lead TSSOP, 32-Lead CSP | $10.57 |
| AD8334 | Analog | 100 | +4.5 | +43.5 | 4 | 0.74 | +5 | 116mA | +0.5 | 7 | 64-Lead LFCSP | $14.66 |
| AD8335 | Analog | 70 | -10 | +38 | 4 | 1.3 | +5 | 76mA | ±0.2 | 18 | 64-Lead LFCSP | $12.14 |
| AD8336 | Analog | 115 | -14 | +46 | 1 | 3 | ±12 | 25mA | ±0.5 | 11 | 16-Lead LFCSP | $4.59 |
| AD8337 | Analog | 280 | 0 | +24 | 1 | 2.2 | ±5 | 15mA | ±0.25 | - | 8-Lead LFCSP | $2.52 |
| AD8367 | Analog | 500 | -2.5 | +42.5 | 1 | 1.84 | +5.5 | 26mA | ±0.2 | 8.1 | 14-Lead TSSOP | $4.60 |
| AD8368 | Analog | 800 | -12 | +22 | 1 | - | +5 | - | ±0.4 | 13 | 24-Lead LFCSP | $4.60 |
| AD8369 | Digital | 600 | -5 | +40 | 1 | 2 | +5.5 | 37mA | ±0.5 | 0.5 | 16-Lead TSSOP | $4.25 |
| AD8370 | Digital | 700 | +25 | +34 | 1 | 2.1 | +5.5 | 78mA | - | 14 | 16-Lead TSSOP | $4.25 |
| AD8375 | Digital | 690 | -4 | +20 | 1 | - | +5 | 130mA | ±0.2 | 19 | 24-Lead LFCSP | $4.54 |
| AD8376 | Digital | 690 | -4 | +20 | 2 | - | +5 | 260mA | ±0.2 | 19 | 32-Lead CSP | $6.57 |
| ADL5330 | Analog | 3000 | -34 | +22 | 1 | - | +5 | 240mA | - | 1.2 | 24-Lead LFCSP | $5.04 |
| ADL5390 | Analog | 2400 | - | +7 | 1 | - | +5 | 130mA | - | 9.6 | 24-Lead LFCSP | $7.59 |
| ADL5391 | Analog | 2000 | - | +9.5 | 1 | 26.7 | +5 | 135mA | - | 15.1 | 16-Lead LFCSP | $4.95 |
| ADL5592 | Digital | 2400 | - | +30.5 | 1 | - | - | - | -0.02 | - | 40-Lead LFCSP | - |
* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S.
Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.
AD8322 Model Options
| Модели | Статус | Корпуса | Pins | Температурный диапазон |
Цена* (100-499) |
Production** Availability |
ROHS Compilant | Samples Cart | Purchase Cart |
|---|---|---|---|---|---|---|---|---|---|
| AD8322-EVAL | Prodn | Evaluation Boards | - | Comm. | $ 100,19 | 10/31/2008 | N | Обратная связь | Add To Cart |
| AD8322ARU | Prodn | 28 ld TSSOP | 28 | Ind | $ 4,03 | 08/29/2008 |
N
Material Declaration |
Обратная связь | Add To Cart |
| AD8322ARU-REEL | Prodn | 28 ld TSSOP | 28 | Ind | - | - |
N
Material Declaration |
Обратная связь | Add To Cart |
| AD8322ARUZ | Prodn | 28 ld TSSOP | 28 | Ind | $ 3,66 | 08/29/2008 |
Y
Material Declaration |
Обратная связь | Add To Cart |
| AD8322ARUZ-REEL | Prodn | 28 ld TSSOP | 28 | Ind | - | 08/29/2008 |
Y
Material Declaration |
Обратная связь | Add To Cart |
Help
- "Pre-Release": модель микросхемы еще не запущена в серийное производство, однако можно получить образцы.
- Производство: модель производится, доступна для покупки и заказа образцов.
- Завершение продаж: запланировано снятие модели микросхемы с производства, но в течение некоторого ограниченного времени покупка еще возможна.
- Снято с производства: Микросхема снята с производства и не доступна для приобретения. Другие варианты, указанные в таблице, все еще производятся (если их статус любой, кроме "снято с производства")
Для более подробного описания корпуса и материалов - см. Package Site
- Коммерческое исполнение: 0…70°С
- Военное исполнение: от -55 до +125 градусов по Цельсию
- Индустриальное исполнение: диапазоны рабочих температур могут быть разные у разных моделей. См. техническое описание (datasheet)
- Automotive: -40 to +125 °С
Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.
*Приведенные цены действительны в США и указаны только для примерного бюджетного рассчета. Цены указаны в долларах США (за штуку в указанном размере партии) и могут быть изменены. Цены в других регионах могут отличаться в зависимости от местных пошлин, налогов, сборов и курсов валют. Для уточнения стоимости обращайтесь в местные офисы продаж Analog Devices, или к официальным дистрибьюторам. Цены на оценочные платы и наборы указаны за штуку независимо от количества.
**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.


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