Datasheet
www.ti.com
FEATURES KEY APPLICATIONS
THS4121
D, DGN, OR DGK PACKAGE
(TOP VIEW)
1
2
3
4
8
7
6
5
V
IN−
V
OCM
V
DD
V
OUT+
V
IN+
NC
GND
V
OUT−
THS4120
D, DGN, OR DGK PACKAGE
(TOP VIEW)
1
2
3
4
8
7
6
5
V
IN−
V
OCM
V
DD
V
OUT+
V
IN+
PD
GND
V
OUT−
DESCRIPTION
+
DIGITAL
OUTPUT
V
IN
−
+ −
DV
DD
V
OCM
AV
SS
AV
DD
A
IN
A
IN
V
DD
V
ref
3.3 V
TYPICAL A/D APPLICATION CIRCUIT
THS4120
THS4121
SLOS319D – FEBRUARY 2001 – REVISED OCTOBER 2004
HIGH-SPEED FULLY DIFFERENTIAL I/O AMPLIFIERS
• Simple Single-Ended To Differential
• High Performance
Conversion
– 100 MHz, –3 dB Bandwidth
• Differential ADC Driver/Differential
– 50 V/ µ s Slew Rate
Antialiasing
– 75 dB Total Harmonic Distortion at 1 MHz
• Differential Transmitter and Receiver
(V
O
= 2 V
PP
)
• Output Level Shifter
– 5.4 nV/ √ Hz Input-Referred Noise (10 kHz)
• Differential Input/Differential Output
– Balanced Outputs Reject Common-Mode
Noise
– Differential Reduced Second Harmonic
Distortion
• Power Supply Range
– V
DD
= 3.3 V
Table 1. HIGH-SPEED DIFFERENTIAL I/O FAMILY
The THS412x is one in a family of fully
differential-input, differential-output devices
NUMBER OF
DEVICE POWERDOWN
CHANNELS
fabricated using Texas Instruments' state-of-the-art
submicron CMOS process.
THS4120
(1)
1 Yes
THS4121 1 –
The THS412x consists of a true, fully differential
signal path from input to output. This results in
excellent common-mode noise rejection and
(1) For proper functiionality, an external 10-k Ω pullup resistor is
improved total harmonic distortion.
required between the PD pin and the positive supply.
RELATED DEVICES
SINGLE SUPPLY SPLIT SUPPLY
DEVICE
(1)
DESCRIPTION
VOLTAGE RANGE VOLTAGE RANGE
THS413x 150 MHz, 51 V/ µ s, 1.3 nV/ √ Hz 5 V to 30 V ± 2.5 to ± 15
THS414x 160 MHz, 450 V/ µ s, 6.5 nV/ √ Hz 5 V to 30 V ± 2.5 to ± 15
THS415x 150 MHz, 650 V/ µ s, 7.6 nV/ √ Hz 5 V to 30 V ± 2.5 to ± 15
(1) See the TI Web site for additional high-speed amplifier devices.
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.
PRODUCTION DATA information is current as of publication date.
Copyright © 2001–2004, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.