1.2k

500

+5VDC

D1

+5VDC

+5VDC

R2

2k

C1

0.1 2F

R1

3k

LMH

6629

0.6 pF

(1.2 pF (2) series)

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LMH6629

SNOSB18I – APRIL 2010 – REVISED DECEMBER 2014

LMH6629 Ultra-Low Noise, High-Speed Operational Amplifier with Shutdown

1 Features

3 Description

The LMH6629 is a high-speed, ultra-low noise

1

•

amplifier designed for applications requiring wide

WSON-8 Package, unless Specified. –3dB

bandwidth with high gain and low noise such as in

Bandwidth 900 MHz

communication, test and measurement, optical and

•

Input Voltage Noise 0.69 nV/

√Hz

ultrasound systems.

•

Input Offset Voltage Max. Over Temperature ±0.8

The LMH6629 operates on 2.7-V to 5.5-V supply with

mV

an input common mode range that extends below

•

Slew Rate 1600 V/

μs

ground and outputs that swing to within 0.8 V of the

rails for ease of use in single supply applications.

•

Heavy loads up to ±250 mA can be driven by high-

•

frequency large signals with the LMH6629's –3dB

•

Supply Voltage Range 2.7 V to 5.5 V

bandwidth of 900 MHz and 1600 V/µs slew rate. The

LMH6629

(WSON-8

package

only)

has

user-

•

Typical Supply Current 15.5 mA

selectable internal compensation for minimum gains

•

Selectable Min. Gain

≥4 or ≥10 V/V

of 4 or 10 controlled by pulling the COMP pin low or

•

Enable Time: 75 ns

high,

thereby

avoiding

the

need

for

external

•

Output Current ±250 mA

compensation capacitors required in competitive

devices. Compensation for the SOT-23-5 package is

•

WSON-8 and SOT-23-5 Packages

internally set for a minimum stable gain of 10 V/V.

The WSON-8 package also provides the power-down

2 Applications

enable/disable feature.

•

Instrumentation Amplifiers

The low-input noise (0.69 nV/

√Hz and 2.6 pA/√Hz),

•

Ultrasound Pre-amps

low distortion (HD2/HD3 =

−90 dBc/−94 dBc) and

•

Wide-band Active Filters

temperature,

±0.45

µV/°C

drift)

allow

precision

•

Opto-Electronics

operation in both ac- and dc-coupled applications.

•

Medical Imaging Systems

The LMH6629 is fabricated in Texas Instruments'

•

Base-Station Amplifiers

proprietary SiGe process and is available in a 3 mm ×

•

Low-Noise Single Ended to Differential

3 mm 8-pin WSON package as well as the SOT-23-5

Conversion

package.

•

Trans-Impedance Amplifier

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

SOT-23 (5)

2.90 mm × 1.60 mm

LMH6629

WSON (8)

3.00 mm × 3.00 mm

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

Transimpedance Amplifier

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.