LMH6629 Ultra-Low Noise, High-Speed Operational Amplifier with Shutdown | TI.com

LMH6629 (ACTIVE)

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

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

Recommended alternative parts

  • LMH6624  -  Ultra Low Power, Wideband Opamp
  • LMH6628  -  Dual Wideband, Low Noise, Voltage Feedback Opamp
  • LMH6654  -  Low Power, 250MHz, Low Noise Opamp

Description

The LMH6629 is a high-speed, ultra-low noise amplifier designed for applications requiring wide bandwidth with high gain and low noise such as in communication, test and measurement, optical and ultrasound systems.

The LMH6629 operates on 2.7-V to 5.5-V supply with an input common mode range that extends below 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 bandwidth of 900 MHz and 1600 V/µs slew rate. The LMH6629 (WSON-8 package only) has user-selectable internal compensation for minimum gains of 4 or 10 controlled by pulling the COMP pin low or high, thereby avoiding the need for external compensation capacitors required in competitive devices. Compensation for the SOT-23-5 package is internally set for a minimum stable gain of 10 V/V. The WSON-8 package also provides the power-down enable/disable feature.

The low-input noise (0.69 nV/√Hz and 2.6 pA/√Hz), low distortion (HD2/HD3 = −90 dBc/−94 dBc) and ultra-low DC errors (800 µV VOS maximum over temperature, ±0.45 µV/°C drift) allow precision operation in both ac- and dc-coupled applications.

The LMH6629 is fabricated in Texas Instruments’ proprietary SiGe process and is available in a 3 mm × 3 mm 8-pin WSON package as well as the SOT-23-5 package.

Features

  • Specified for VS = 5 V, RL = 100 Ω, AV = 10V/V
    WSON-8 Package, unless Specified. –3dB
    Bandwidth 900 MHz
  • Input Voltage Noise 0.69 nV/√Hz
  • Input Offset Voltage Max. Over Temperature
    ±0.8 mV
  • Slew Rate 1600 V/ µs
  • HD2 @ f = 1 MHz, 2VPP −90 dBc
  • HD3 @ f = 1 MHz, 2VPP −94 dBc
  • Supply Voltage Range 2.7 V to 5.5 V
  • Typical Supply Current 15.5 mA
  • Selectable Min. Gain ≥4 or ≥10 V/V
  • Enable Time: 75 ns
  • Output Current ±250 mA
  • WSON-8 and SOT-23-5 Packages

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Parametrics Compare all products in High-speed op amps (GBW>=50MHz)

 
Architecture
Number of Channels (#)
Total Supply Voltage (Min) (+5V=5, +/-5V=10)
Total Supply Voltage (Max) (+5V=5, +/-5V=10)
BW @ Acl (MHz)
Acl, min spec gain (V/V)
Slew Rate (Typ) (V/us)
Vn at Flatband (Typ) (nV/rtHz)
Vn at 1kHz (Typ) (nV/rtHz)
Iq per channel (Typ) (mA)
Vos (Offset Voltage @ 25C) (Max) (mV)
Rail-to-Rail
Features
Rating
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
CMRR (Typ) (dB)
Input Bias Current (Max) (pA)
Offset Drift (Typ) (uV/C)
GBW (Typ) (MHz)
Output Current (Typ) (mA)
2nd Harmonic (dBc)
3rd Harmonic (dBc)
@ MHz
LMH6629 LMH6624 LMH6628 LMH6654
Bipolar
Voltage FB    
Bipolar     Bipolar
Voltage FB    
Bipolar
Voltage FB    
1     1     2     1    
2.7     5     5     4.5    
5.5     12     12     12    
900     150     300     250    
4     10     1     1    
1100     400     550     200    
0.69     0.92     2     4.5    
0.69     0.92     2     4.5    
15.5     12     9     4.5    
0.78     0.5     2     3    
No     No     No     In to V-    
Decompensated     Decompensated     N/A     N/A    
Catalog     Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 85     -40 to 85    
SOT-23 | 5
WSON | 8    
SOIC | 8
SOT-23 | 5    
SOIC | 8     SOIC | 8
SOT-23 | 5    
5SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 5)
See datasheet (WSON)    
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
5SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 5)    
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)     8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
5SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 5)    
87     95     62     90    
23000     20000000     20000000     10000000    
0.45     0.25     5     6    
4000     1800     300     250    
250     100     85     186    
88     63     65     80    
74     80     74     85    
1     10     10     1    

WEBENCH® Designer LMH6629

Amplifier Topology
 Non-inverting
 Inverting
Desired Power Supply Voltage
Positive Supply (Vcc):  V
Negative Supply (Vee):  V
Allowed Power Supply(Vcc-Vee) = 2.7 to 5.5 V
Desired Input and Output Requirements
  Min Max
Vin  V  V
Vout  V  V
Minimum Temperature = -40.0 °C
Maximum Temperature = 125.0 °C