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PDF ADA4960-1 Data sheet ( Hoja de datos )
| Número de pieza | ADA4960-1 | |
| Descripción | Low Distortion Ultrahigh Speed Differential ADC Driver | |
| Fabricantes | Analog Devices | |
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Preliminary Technical Data
FEATURES
Adjustable output common-mode voltage
Externally adjustable gain
−3 dB bandwidth of 3GHz, (all gains)
Low harmonic distortion (H2/H3 SE->DIFF)
-77/-67 dBc @ 250 MHz
-69/-63 dBc @ 500 MHz
-52/-63 dBc @ 1GHz
IMD3 @ 1GHz = 67dBc
Slew rate 8000 V/μs
Fast overdrive recovery of 1 ns
Low input voltage noise of 3.6 nV/√Hz
Low power dissipation: 60 mA quiescent current
0.1 dB gain flatness to TBD MHz
Available in 16-Lead and 24-Lead LFSCP packages
APPLICATIONS
ADC drivers for giga-sample ADCs
Single-ended-to-differential converters
RF/IF gain block
Line drivers
Oscilloscopes
Satellite Communications
Data Acquisition
Electronic Surveillance and Countermeasures
Low Distortion Ultrahigh Speed
Differential ADC Driver
ADA4960-1
PIN CONFIGURATION
Figure 1.
www.DaGtaESNhEeeRt4AUL.cDomESCRIPTION
The ADA4960-1 is a high performance differential amplifier
optimized for RF and IF applications. It achieves better than
63dB SFDR performance at frequencies up to 500 MHz, and
52dB up to 1GHz, making it an ideal driver for high speed 8-bit
to 10-bit giga-sample analog-to-digital converters (ADCs).
Unlike other wideband differential amplifiers, the ADA4960-1
has buffered inputs that isolate the gain-setting resistor (RG)
from the signal inputs. As a result, the ADA4960-1 maintains a
constant 10 kΩ differential input resistance for gains of 6 dB to
15 dB, easing matching and input drive requirements. The
ADA4960-1 has a nominal 150 Ω differential output resistance.
The device is optimized for wideband, low distortion performance
at frequencies up to and beyond 1 GHz. These attributes,
together with its wide gain adjust capability make this device
the amplifier of choice for general-purpose IF and broadband
applications where low distortion, noise, and power are critical.
Rev. PrB
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
The device also includes a unity gain buffer, for the buffering of
DC signals such as the common-mode-input to the amplifier.
This buffer is found between pins 6 (input) and pin5 (output).
If this buffer is not used, the output can be left disconnected
and the input can be grounded.
It is ideally suited for driving not only ADCs, but also mixers,
pin diode attenuators, SAW filters, and multi-element discrete
devices, as well as buffering high frequency DACs. The device
will be available in a single channel version in 3 mm ×3 mm,
16-lead LFCSP package or a dual channel version in 4 mm x 4
mm, 24-lead LFSCP. The device operates over a temperature
range of −40°C to +105°C.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2009 Analog Devices, Inc. All rights reserved.
1 page  
Preliminary Technical Data
PIN CONFIGURATION AND FUNCTION DESCRIPTION
ADA4960-1
Figure 2. Pin Configuration
Table 2. Pin Function Descriptions
Pin No.
Mnemonic Description
1 VIP Balanced Differential Input. Biased to VCOM.
2 IIP Gain setting input, positive side. A resistor from this pin to pin 3 sets the gain for the device.
3 IIN Gain setting input, negative side. A resistor from this pin to pin 3 sets the gain for the device..
4 VIN Balanced Differential Input. Biased to VCOM.
5
VCIO
Common Mode buffer output.
6 VCI Common Mode buffer input
7, 8, 9, 12
+Vs
Positive Supply.
10 VON
www.Da1t1aSheet4U.com VOP
13 VC0M
16 PD
13, 14, 15, 16 GND
Balanced Differential Output. Biased to VCOM, typically ac-coupled.
Balanced Differential Output. Biased to VCOM, typically ac-coupled.
Common-Mode Voltage. A voltage applied to this pin sets the common-mode voltage of the input and
output. Typically decoupled to ground with a 0.1 μF capacitor. With no reference applied, input and output
common mode floats to midsupply (VCC/2).
Enable. Apply positive voltage (1.3 V < ENB < VCC) to activate device.
Ground. Connect to low impedance GND.
Rev. PrB | Page 5 of 6
5 Page | ||
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| PDF Descargar | [ Datasheet ADA4960-1.PDF ] | |
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