ADA4937-1: Ultralow Distortion Differential ADC Driver (Single)
The ADA4937 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 100 MHz. The ...More
ADA4937-1: Ultralow Distortion Differential ADC Driver (Single)
Product Description
The ADA4937 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 100 MHz. The adjustable level of the output common mode allows the ADA4937 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.
With the ADA4937, differential gain configurations are easily realized with a simple external feedback network of four resistors that determine the closed-loop gain of the amplifier.
The ADA4937 is fabricated using Analog Devices, Inc. proprietary silicon-germanium (SiGe), complementary bipolar process, enabling it to achieve very low levels of distortion with an input voltage noise of only 2.2 nV/√Hz. The low dc offset and excellent dynamic performance of the ADA4937 make it well suited for a wide variety of data acquisition and signal processing applications.
The ADA4937 is available in a Pb-free, 3 mm × 3 mm 16-lead LFCSP (ADA4937-1, single) or a Pb-free, 4 mm × 4 mm 24-lead LFCSP (ADA4937-2, dual). The pinout has been optimized to facilitate PCB layout and minimize distortion. The ADA4937-1 is specified to operate over the −40°C to +105°C temperature range, and the ADA4937-2 operates over −40°C to +85°C; both operate at 3.3 V and 5 V supplies.
Applications
Data Sheet, Rev. A, 11/07
- 产品数据手册 Rev A, 11/2007 (pdf 646kB)
- （关于数据手册）
Features
- Extremely low harmonic distortion
−112 dBc HD2 @ 10 MHz
−84 dBc HD2 @ 70 MHz
−77 dBc HD2 @ 100 MHz
−102 dBc HD3 @ 10 MHz
−91 dBc HD3 @ 70 MHz
−84 dBc HD3 @ 100 MHz - High speed
−3 dB bandwidth of 1.9 GHz, G = 1
Slew rate: 6000 V/μs, 25% to 75%
Fast overdrive recovery of 1 ns
- Low input voltage noise: 2.2 nV/√Hz
- 0.5 mV typical offset voltage
- Externally adjustable gain
- Differential-to-differential or single-ended-to-differential operation
- Adjustable output common-mode voltage
- Single-supply operation: 3.3 V to 5 V
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| Part# | -3 dB BW (MHz) | Minimum Gain (Acl) | Voltage Supply (V) | Supply Current (max) | 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 | $3.80 |
| AD8139 | 410 | 1 | 5 to 12 | 24.5mA | 800 | -90 | -105 | 8-Lead CSP, 8-Lead SOIC | $3.63 |
| AD8350 | 900 | - | 4 to 11 | 32mA | 2000 | -67 | -70 | 8-Lead SOIC/8-Lead uSOIC | $2.52 |
| AD8351 | 2200 | 1 | 3 to 5.5 | 32mA | 13000 | -79 | -81 | 10-Lead uSOIC | $2.68 |
| AD8352 | 2200 | - | 3 to 5.5 | 37mA | 11000 | -81 | -82 | 16-Lead LFCSP | $3.53 |
| ADA4922-1 | 38 | 1 | +/- 12 | 9.4mA | 730 | -116 | -109 | - | $3.63 |
| ADA4937-1 | 1900 | 1 | 3 to 5.25 | 39.5mA | 6000 | -70 | -84 | 16-Lead LFCSP | $3.84 |
| ADA4937-2 | 1900 | 1 | 3 to 5.25 | 42mA | 6000 | -77 | -84 | 16-Lead LFCSP, 24-Lead LFCSP | $5.76 |
| ADA4938-1 | 1000 | 1 | 4.5 to 11 | 40mA | 4700 | -82 | -82 | 16-Lead LFCSP, 24-Lead LFCSP | $3.84 |
| ADA4938-2 | 1000 | 1 | 4.5 to 11 | 36.5mA | 4700 | -82 | -82 | 16-Lead LFCSP, 24-Lead LFCSP | $5.76 |
| ADA4939-1 | 1400 | 2 | 3 to 5 | 37.7mA | 6800 | -77 | -95 | 16-Lead LFCSP | $3.84 |
| ADA4939-2 | 1400 | 2 | 3 to 5 | 37.7mA | 6800 | -77 | -91 | 16-Lead LFCSP | $5.76 |
| ADA4941-1 | 30 | 2 |