THS4513 Datasheet, PDF (1/34 Pages) Texas Instruments – WIDEBAND, LOW NOISE, LOW DISTORTION FULLY DIFFERENTIAL AMPLIFIER

THS4513
www.ti.com
SLOS472 – AUGUST 2005
WIDEBAND, LOW NOISE, LOW DISTORTION FULLY DIFFERENTIAL AMPLIFIER
FEATURES
• Fully Differential Architecture
• Centered Input Common-mode Range
• Minimum Gain of 1V/V (0 dB)
• Bandwidth: 1600 MHz
• Slew Rate: 5100 V/µs
• 1% Settling Time: 2.9 ns
• HD₂: –75 dBc at 70 MHz
• HD₃: –86 dBc at 70 MHz
• OIP₂: 77 dBm at 70 MHz
• OIP₃: 42 dBm at 70 MHz
• Input Voltage Noise: 2.2 nV/√Hz (f >10 MHz)
• Noise Figure: 19.8 dB
• Output Common-Mode Control
• Power Supply:
– Voltage: 3 V (±1.5 V) to 5 V (±2.5 V)
– Current: 37.7 mA
• Power-Down Capability: 0.65 mA
APPLICATIONS
• 5 V Data Acquisition Systems High
Linearity ADC Amplifier
• Wireless Communication
• Medical Imaging
• Test and Measurement
DESCRIPTION
The THS4513 is a wideband, fully differential op amp
designed for 3.3–5 V data acquisition systems. It has
very low noise at 2.2 nV/√Hz, and extremely low
harmonic distortion of –75 dBc HD₂ and –86 dBc HD₃
at 70 MHz with 2-Vpp output, G = 0 dB, and 200-Ω
load. Slew rate is very high at 5100 V/µs and with
settling time of 2.9 ns to 1% (2 V step) it is ideal for
pulsed applications. It is designed for minimum gain
of 0 dB.
To allow for dc coupling to ADCs, its unique output
common-mode control circuit maintains the output
common-mode voltage within 5 mV offset (typ) from
the set voltage, when set within 0.5 V of mid-supply,
with less than 4 mV differential offset voltage. The
common-mode set point is set to mid-supply by
internal circuitry, which may be over-driven from an
external source.
The input and output are optimized for best perform-
ance with their common-mode voltages set to
mid-supply. Along with high performance at low
power supply voltage, this makes for extremely high
performance single supply 5 V data acquisition sys-
tems.
The THS4513 is offered in a Quad 16-pin leadless
QFN package (RGT), and is characterized for oper-
ation over the full industrial temperature range from
–40°C to 85°C.
60 MHz Low-Pass Filter
6.8 pf
50-W
V_IN
Single-
Ended
AC-Coupled
Source
50 W
0.22 mf
340 W
56.2 W
0.22 mf
340 W
56.2 W
0.22 mf
348 W
2.5 V
25 W
THS4513
CM
-2.5 V
348 W
25 W
0.1 mf
To 50 W Test
Equipment
1:1
V_OUT
0.1 mf
6.8 pf
Low-Pass Filter Response
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
-20
-22
-24
-26
0.1
1
10
100
f - Frequency (MHz)
1000
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.
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 © 2005, Texas Instruments Incorporated