ADA4938-2: Ultralow Distortion Differential ADC Driver (Dual) |
The ADA4938 is a low noise, ultralow distortion, high speed differential amplifier. It is an ideal choice for driving high performance ADCs with resolutions up to 16 bits from dc to 27 MHz, or up to 12 bits from dc to 74 MHz. The output common-mode voltage is adjustable over a wide range, allowing the ADA4938 to match the input of the ADC. The internal common-mode feedback loop also provides ...続きを見る
The ADA4938 is a low noise, ultralow distortion, high speed differential amplifier. It is an ideal choice for driving high performance ADCs with resolutions up to 16 bits from dc to 27 MHz, or up to 12 bits from dc to 74 MHz. The output common-mode voltage is adjustable over a wide range, allowing the ADA4938 to match the input of the ADC. The internal common-mode feedback loop also provides exceptional output balance as well as suppression of even-order harmonic distortion products.
Full differential and single-ended-to-differential gain configurations are easily realized with the ADA4938. A simple external feedback network of four resistors determines the closed-loop gain of the amplifier.
The ADA4938 is fabricated using the Analog Devices, Inc. proprietary third-generation, high voltage XFCB process, enabling it to achieve very low levels of distortion with an input voltage noise of only 2.6 nV/√Hz. The low dc offset and excellent dynamic performance of the ADA4938 make it well suited for a wide variety of data acquisition and signal processing applications.
The ADA4938-1 (single amplifier) is available in a Pb-free, 3 mm × 3 mm, 16-lead LFCSP. The ADA4938-2 (dual amplifier) is available in a Pb-free, 4 mm × 4 mm, 24-lead LFCSP. The pinouts have been optimized to facilitate layout and minimize distortion. The parts are specified to operate over the extended industrial temperature range of −40°C to +85°C.
Applications
Data Sheet, Rev. 0, 11/07
| Part# | -3 dB BW (MHz) | Minimum Gain (Acl) | Voltage Supply (V) | Supply Current | Slew Rate (V/us) | Distortion (2nd) (dBc) | Distortion (3rd) (dBc) | Package | Price* (1000-4999) |
|---|---|---|---|---|---|---|---|---|---|
| AD6630 | 700 | - | +/- 5 | 30mA | 3700 | - | - | 16-Lead SOIC | $4.18 |
| AD8132 | 350 | 1 | +/- 5 | 10.7mA | 1200 | -97 | -100 | 8-Lead MSOP, 8-Lead SOIC | $1.67 |
| AD8137 | 110 | 1 | +/- 6 | 3.6mA | 450 | -85 | -85 | 8-Lead SOIC | $1.10 |
| AD8138 | 320 | 1 | +/- 5 | 20mA | 1500 | -94 | -114 | 8-Lead CSP, 8-Lead SOIC | $3.75 |
| AD8139 | 410 | 1 | 5 to 12 | 24.5mA | 800 | -90 | -105 | 8-Lead CSP, 8-Lead SOIC | $3.75 |
| AD8350 | 900 | - | 4 to 11 | 28mA | 2000 | -66 | -65 | 8-Lead SOIC/8-Lead uSOIC | $2.52 |
| AD8351 | 2200 | 1 | 3 to 5.5 | 28mA | 13000 | -79 | -81 | 10-Lead uSOIC | $2.68 |
| AD8352 | 2200 | - | 3 to 5.5 | 37mA | 11000 | -83 | -83 | 16-Lead LFCSP | $3.53 |
| ADA4922-1 | 38 | 1 | +/- 12 | 9.4mA | 730 | -116 | -109 | - | $3.63 |
| ADA4927-1 | 2300 | 1 | 4.5 to 11 | 22.1mA | 5000 | -87 | -89 | 16-Lead LFCSP | $3.79 |
| ADA4927-2 | 2300 | 1 | 4.5 to 11 | 22.1mA | 5000 | -87 | -89 | 24-Lead LFCSP | $6.29 |
| ADA4932-1 | 560 | 1 | 3 to 11 | 9.6mA | 410 | -72 | -80 | 16-Lead LFCSP | $2.95 |
| ADA4932-2 | 560 | 1 | 3 to 11 | 9.6mA | 410 | -72 | -80 | 24-Lead LFCSP | $5.29 |
| ADA4937-1 | 1900 | 1 | 3 to 5.25 | 39.5mA | 6000 | -70 | -84 | 16-Lead LFCSP | $3.79 |
| ADA4937-2 | 1900 | 1 | 3 to 5.25 | 42mA | 6000 | -77 | -84 | 16-Lead LFCSP, 24-Lead LFCSP | $5.69 |
| ADA4938-1 | 1000 | 1 | 4.5 to 11 | 40mA | 4700 | -82 | -82 | 16-Lead LFCSP, 24-Lead LFCSP | $3.79 |
| ADA4938-2 | 1000 | 1 | 4.5 to 11 | 36.5mA | 4700 | -82 | -82 | 16-Lead LFCSP, 24-Lead LFCSP | $5.69 |
| ADA4939-1 | 1400 | 2 | 3 to 5 | 37.7mA | 6800 | -77 | -95 | 16-Lead LFCSP | $3.79 |
| ADA4939-2 | 1400 | 2 | 3 to 5 | 37.7mA | 6800 | -77 | -91 | 16-Lead LFCSP | $5.69 |
| ADA4941-1 | 30 | 2 | - | 2.3mA | 22 | -75 | -71 | 8-Lead LFCSP, 8-Lead SOIC | $2.42 |
| ADA4950-1 | 750 | 1 | 3 to 11 | 9.5mA | 2900 | -80 | -84 | 16-Lead LFCSP, 24-Lead LFCSP | $2.99 |
| ADA4950-2 | 750 | 1 | 3 to 11 | 9.5mA | 2900 | -80 | -84 | 16-Lead LFCSP, 24-Lead LFCSP | $5.29 |
| ADL5561 | 2900 | 6 | 3.3 | 40mA | 9800 | -95 | -87 | 16-Lead LFCSP | $3.68 |
| ADL5562 | 3300 | 6 | 3.3 | 80mA | 9800 | -104 | -87 | 16-Lead LFCSP | $3.68 |
* 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.
| モデル | 製品状況 | パッケージ | ピン数 | 動作 温度範囲 |
価格* (100-499) |
価格* (1000 pcs.) |
Production** Availability |
RoHS互換 | PCN | サンプル・カート | 購入カート |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ADA4938-2ACPZ-R2 | 製造中 | 24 ld LFCSP (4x4mm w/2.10mm EP) | 24 | 工業用 | $6.69 | $6.69 | 11/13/2009 | Y 成分表 | PCN | お問い合わせ | カートに入れる |
| ADA4938-2ACPZ-R7 | 製造中 | 24 ld LFCSP (4x4mm w/2.10mm EP) | 24 | 工業用 | $ | $5.69 | 11/13/2009 | Y 成分表 | PCN | カートに入れる | カートに入れる |
| ADA4938-2ACPZ-RL | 製造中 | 24 ld LFCSP (4x4mm w/2.10mm EP) | 24 | 工業用 | $ | $5.69 | - | Y 成分表 | - | お問い合わせ | カートに入れる |
| モデル | 製品状況 | パッケージ | ピン数 | 動作 温度範囲 |
価格* (1000 pcs.) |
Production** Availability |
RoHS互換 | PCN | サンプル・カート | 購入カート |
|---|---|---|---|---|---|---|---|---|---|---|
| EVAL-ADDIFAMP-1CPZ | 製造中 | EVALUATION BOARDS | - | 商用 | $ | 11/13/2009 | Y | - | カートに入れる | お問い合わせ |
| EVAL-ADDIFAMP-2CPZ | 製造中 | EVALUATION BOARDS | - | 商用 | $ | 11/13/2009 | Y | - | カートに入れる | お問い合わせ |
| EVAL-ADDIFFAMP-1RZ | 製造中 | EVALUATION BOARDS | - | 商用 | $ | 11/13/2009 | Y | - | カートに入れる | お問い合わせ |
| EVAL-ADDIFFAMP-CPZ | 製造中 | EVALUATION BOARDS | - | 商用 | $ | 11/13/2009 | Y | - | カートに入れる | お問い合わせ |
| EVAL-ADDIFFAMP-RMZ | 製造中 | EVALUATION BOARDS | - | 商用 | $ | 11/13/2009 | Y | - | カートに入れる | お問い合わせ |
*価格は1個当たりの米ドルで、米国内における販売価格(FOB)で表示されておりますので、予算のためにのみご使用いただけます。 また、その価格は変更されることがあります。米国以外のお客様への価格は、輸送費、各国の税金、手数料、為替レートにより決定されます。価格・納期等の詳細情報については、弊社正規販売代理店または担当営業にお問い合わせください。なお、 評価用ボードおよび評価用キットの表示価格は1個構成としての価格です。
**製品購入よりもサンプル注文の方が早く届く場合があります。入手性については、カートの中の「Availability」の欄をご覧ください。