THS770012_15 Datasheet, PDF (1/35 Pages) Texas Instruments – Broadband, Fully-Differential, 14-/16-Bit ADC Driver Amplifier

THS770012
www.ti.com
SLOS669C – FEBRUARY 2010 – REVISED JANUARY 2012
Broadband, Fully-Differential, 14-/16-Bit ADC Driver Amplifier
Check for Samples: THS770012
FEATURES
1
•23 900MHz Bandwidth at Gain of +10dB
• 3300V/µs Slew Rate, V_OUT = 2V step
• Adjustable Gain: +10dB to +13.7dB
• IMD₃: –100dBc, V_OUT = 2V_PP, R_L = 400Ω,
f = 100MHz
• OIP3: 47dBm, f = 100MHz
• Noise Figure: 10.7 dB, f = 100MHz
APPLICATIONS
• 14-/16-Bit ADC Driver
• ADC Driver for Wireless Base Station Signal
Chains: GSM, WCDMA, MC-GSM, LTE
• ADC Driver for High Dynamic Range Test and
Measurement Equipment
Figure 1. THS770012 Driving 16-Bit ADC
V_IN-
V_IN+
V_OCM
50W
50W
THS770012
(G=12dB)
200W
V_OCM
200W
R_O
30MHz
Bandpass
Filter
R_O
A_IN+
16-Bit ADC
A_IN-
Figure 2. FFT Plot with Two-Tone Input at 96MHz
and 100MHz (see Application Information section)
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
0
5 10 15 20 25 30 35 40 45 50 55 60 65
Frequency - MHz
DESCRIPTION
The THS770012 is a wideband, fully-differential
amplifier, with adjustable gain range from +10dB to
+13.7dB (with external components). It is designed
and optimized specifically for driving 16-bit
analog-to-digital converters (ADCs) at input
frequencies up to 130MHz, and 14-bit ADCs at input
frequencies up to 200MHz. This device provides high
bandwidth, high-voltage output with low distortion and
low noise, critical in high-speed data acquisition
systems that require very high dynamic range, such
as wireless base stations and test and measurement
applications. This device also makes an excellent
differential amplifier for general-purpose, high-speed
differential signal chain and short line driver
applications.
The THS770012 operates on a nominal +5V single
supply, offers very fast, 7.5ns maximum recovery
time from overdrive conditions, and has a
power-down mode for power saving. The THS770012
is offered in a Pb-free (RoHS compliant) and green,
QFN-24 thermally-enhanced package. It is
characterized for operation over the industrial
temperature range of –40°C to +85°C.
DEVICE
THS770006
THS4509
PGA870
ADS5481 to
ADS5485
ADS6145
ADS6149
RELATED DEVICES
DESCRIPTION
Fixed Gain of +6dB, wideband, low-noise,
low-distortion, fully-differential amplifier
Wideband, low-noise, low-distortion,
fully-differential amplifier
Wideband, low-noise, low-distortion,
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14-bit, 250MSPS ADC
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
2
All other trademarks are the property of their respective owners.
3
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010–2012, Texas Instruments Incorporated