THS770012,THS770012IRGER,THS770012IRGET

Part No.:
THS770012,THS770012IRGER,THS770012IRGET
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Description:
Broadband, Fully-Differential, 14-/16-Bit ADC Driver Amplifier
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1245 K
Page:
35 Pages
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Maker:
TI [ TEXAS INSTRUMENTS ]
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PCB Datasheet:1PCB Datasheet:1
THS770012
www.ti.com
SLOS669C
FEBRUARY 2010
REVISED JANUARY 2012
Broadband, Fully-Differential, 14-/16-Bit ADC Driver Amplifier
Check for Samples:
THS770012
1
FEATURES
900MHz Bandwidth at Gain of +10dB
3300V/µs Slew Rate, V
OUT
= 2V step
Adjustable Gain: +10dB to +13.7dB
IMD
3
:
–100dBc,
V
OUT
= 2V
PP
, R
L
= 400Ω,
f = 100MHz
OIP3: 47dBm, f = 100MHz
Noise Figure: 10.7 dB, f = 100MHz
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.
RELATED DEVICES
DEVICE
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,
fully-differential, digitally-programmable
gain amplifier
16-bit, 80MSPS to 200MSPS ADCs
14-bit, 125MSPS ADC
14-bit, 250MSPS ADC
THS770006
THS4509
PGA870
ADS5481 to
ADS5485
ADS6145
ADS6149
23
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
200W
50W
V
IN-
V
OCM
V
IN+
50W
V
OCM
THS770012
(G=12dB)
200W
R
O
R
O
30MHz
Bandpass
Filter
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
dBFS
5
10 15 20 25 30 35 40 45 50 55
Frequency - MHz
60 65
1
2
3
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.
All other trademarks are the property of their respective owners.
Copyright
©
2010–2012, Texas Instruments Incorporated
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.