AD605: Dual, Low Noise, Single-Supply Variable Gain Amplifier |
The AD605 is a low noise, accurate, dual-channel, linear-in-dB variable gain amplifier (VGA), optimized for any application requiring high performance, wide bandwidth variable gain control. Operating from a single 5 V supply, the AD605 provides differential inputs and unipolar gain control for ease of use. Added flexibility is achieved with a user-determined gain range and an external reference ...続きを見る
The AD605 is a low noise, accurate, dual-channel, linear-in-dB variable gain amplifier (VGA), optimized for any application requiring high performance, wide bandwidth variable gain control. Operating from a single 5 V supply, the AD605 provides differential inputs and unipolar gain control for ease of use. Added flexibility is achieved with a user-determined gain range and an external reference input that provide user-determined gain scaling (dB/V).
The high performance linear-in-dB response of the AD605 is achieved with the differential input, single-supply, exponential amplifier (DSX-AMP) architecture. Each of the DSX-AMPs comprises a variable attenuator of 0 dB to −48.4 dB followed by a high speed, fixed-gain amplifier. The attenuator is based on a 7-stage R-1.5R ladder network. The attenuation between tap points is 6.908 dB, and 48.360 dB for the entire ladder network. The DSX-AMP architecture results in 1.8 nV/√Hz input noise spectral density and accepts a ±2.0 V input signal when VOCM is biased at VP/2.
Each independent channel of the AD605 provides a gain range of 48 dB that can be optimized for the application. Gain ranges between −14 dB to +34 dB and 0 dB to +48 dB can be selected by a single resistor between Pin FBK and Pin OUT. The lower and upper gain ranges are determined by shorting Pin FBK to Pin OUT or leaving Pin FBK unconnected, respectively. The two channels of the AD605 can be cascaded to provide 96 dB of very accurate gain range in a monolithic package.
The gain control interface provides an input resistance of approximately 2 MΩ and scale factors from 20 dB/V to 30 dB/V for a VREF input voltage of 2.5 V to 1.67 V, respectively. Note that scale factors up to 40 dB/V are achievable with reduced accuracy for scales above 30 dB/V. The gain scales linearly in dB with control voltages (VGN) of 0.4 V to 2.4 V for the 20 dB/V scale and 0.20 V to 1.20 V for the 40 dB/V scale. When VGN is <50 mV, the amplifier is powered down to draw 1.9 mA. Under normal operation, the quiescent supply current of each amplifier channel is only 18 mA.
The AD605 is available in a 16-lead PDIP and a 16-lead SOIC_N package and is guaranteed for operation over the −40°C to +85°C temperature range.
Applications
Data Sheet, Rev. E, 5/07
| 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 | 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 | $5.47 |
| 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 |
| AD8264 | Analog | 235 | 0 | +24 | 4 | 2.3 | ±5 | 99mA | +2 | - | 40-Lead LFCSP | $11.95 |
| 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 | $2.49 |
| AD8350 | Analog | 900 | +15 | +20 | - | 1.7 | +11 | 28mA | - | 2 | 8-Lead SOIC/8-Lead uSOIC | $2.52 |
| AD8351 | Analog | 2200 | 0 | +26 | - | 2.7 | +5 | 28mA | - | 13 | 10-Lead uSOIC | $2.68 |
| AD8352 | Analog | 2200 | +3 | +25 | - | 2.6 | +5.5 | 37mA | - | 13 | 16-Lead LFCSP | $3.53 |
| AD8366 | Digital | 1000 | +4.5 | +20.5 | - | - | - | 180mA | - | - | 32-Lead CSP | - |
| 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 | 750 | -11 | +34 | 1 | 2.1 | +5.5 | 78mA | - | 14 | 16-Lead TSSOP | $4.25 |
| AD8372 | Digital | 130 | -9 | +32 | 2 | - | +5 | 116mA | ±0.3 | - | 32-Lead CSP | $6.58 |
| AD8375 | Digital | 630 | -4 | +20 | 1 | - | +5 | 125mA | ±0.2 | 19 | 24-Lead LFCSP | $4.54 |
| AD8376 | Digital | 700 | -4 | +20 | 2 | - | +5 | 250mA | ±0.2 | 19 | 32-Lead CSP | $6.57 |
| ADL5330 | Analog | 3000 | -34 | +22 | 1 | - | +5 | 215mA | - | 1.2 | 24-Lead LFCSP | $5.04 |
| ADL5331 | Analog | 1500 | -14 | +17 | 1 | - | - | 240mA | - | - | - | - |
| 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 |
| ADL5561 | - | 2900 | +6 | +15.5 | - | 2.1 | - | 40mA | - | - | 16-Lead LFCSP | $3.68 |
| ADL5592 | Digital | 2400 | - | +30.5 | 1 | - | - | 189mA | -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.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| AD605-EVALZ | 製造中 | EVALUATION BOARDS | - | 工業用 | $247.12 | 11/27/2009 | Y | - | お問い合わせ | カートに入れる |
| AD605AN | 製造中 | 16 ld PDIP | 16 | 工業用 | $10.36 | 01/08/2010 | N 成分表 | PCN | お問い合わせ | カートに入れる |
| AD605ANZ | 製造中 | 16 ld PDIP | 16 | 工業用 | $9.91 | 11/27/2009 | Y 成分表 | PCN | お問い合わせ | カートに入れる |
| AD605AR | 製造中 | 16 ld SOIC | 16 | 工業用 | $10.36 | 11/27/2009 | N 成分表 | - | お問い合わせ | カートに入れる |
| AD605AR-REEL | 製造中 | 16 ld SOIC | 16 | 工業用 | $10.36 | - | N 成分表 | - | お問い合わせ | カートに入れる |
| AD605AR-REEL7 | 製造中 | 16 ld SOIC | 16 | 工業用 | $10.36 | - | N 成分表 | - | お問い合わせ | カートに入れる |
| AD605ARZ | 製造中 | 16 ld SOIC | 16 | 工業用 | $9.91 | 12/04/2009 | Y 成分表 | - | お問い合わせ | カートに入れる |
| AD605ARZ-R7 | 製造中 | 16 ld SOIC | 16 | 工業用 | $9.91 | 12/04/2009 | Y 成分表 | - | お問い合わせ | カートに入れる |
| AD605ARZ-RL | 製造中 | 16 ld SOIC | 16 | 工業用 | $9.91 | 01/01/2010 | Y 成分表 | - | お問い合わせ | カートに入れる |
| AD605BN | 製造中 | 16 ld PDIP | 16 | 工業用 | $11.40 | - | N 成分表 | PCN | お問い合わせ | カートに入れる |
| AD605BR | 製造中 | 16 ld SOIC | 16 | 工業用 | $11.91 | 11/27/2009 | N 成分表 | - | お問い合わせ | カートに入れる |
| AD605BR-REEL | 製造中 | 16 ld SOIC | 16 | 工業用 | $11.91 | 11/27/2009 | N 成分表 | - | お問い合わせ | カートに入れる |
| AD605BR-REEL7 | 製造中 | 16 ld SOIC | 16 | 工業用 | $11.91 | - | N 成分表 | - | お問い合わせ | カートに入れる |
| AD605BRZ | 製造中 | 16 ld SOIC | 16 | 工業用 | $11.40 | 11/27/2009 | Y 成分表 | - | お問い合わせ | カートに入れる |
| AD605BRZ-R7 | 製造中 | 16 ld SOIC | 16 | 工業用 | $11.40 | 11/27/2009 | Y 成分表 | - | お問い合わせ | カートに入れる |
| AD605BRZ-RL | 製造中 | 16 ld SOIC | 16 | 工業用 | $11.40 | - | Y 成分表 | - | お問い合わせ | カートに入れる |
*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。