Features
(VS = ±5V, TA = 25°C, RL = 2kΩ, AV = +1. Typical values unless specified).
|
−3dB BW (AV = +1)
|
130MHz
|
|
Supply voltage range
|
2.7V to 12.8V
|
|
Slew rate
, (AV = −1)
|
130V/µs
|
|
Supply current (no load)
|
2.7mA/amp
|
|
Output short circuit current
|
+115mA/−145mA
|
|
Linear output current
|
±75mA
|
|
Input common mode volt.
|
0.5V beyond V
−, 1V from V
+
|
|
Output voltage swing
|
40mV from rails
|
|
Input voltage noise (100kHz)
|
17nV/
|
|
Input current noise (100kHz)
|
0.9pA/
|
|
THD (5MHz, RL = 2kΩ, VO = 2VPP, AV = +2)
|
−62dBc
|
|
Settling time
|
68ns
|
|
Fully characterized for 3V, 5V, and ±5V
|
|
|
Overdrive recovery
|
100ns
|
|
Output short circuit protected
|
|
|
No output phase reversal with CMVR exceeded
|
|
Description The LMH664X family true single supply voltage feedback amplifiers offer high speed (130MHz), low distortion (−62dBc), and
exceptionally high output current (approximately 75mA) at low cost and with reduced power consumption when compared against
existing devices with similar performance.
Input common mode voltage range extends to 0.5V below V
− and 1V from V
+. Output voltage range extends to within 40mV of either supply rail, allowing wide dynamic range especially desirable in low
voltage applications. The output stage is capable of approximately 75mA in order to drive heavy loads. Fast output Slew Rate
(130V/µs) ensures large peak-to-peak output swings can be maintained even at higher speeds, resulting in exceptional full
power bandwidth of 40MHz with a 3V supply. These characteristics, along with low cost, are ideal features for a multitude
of industrial and commercial applications.
Careful attention has been paid to ensure device stability under all operating voltages and modes. The result is a very well
behaved frequency response characteristic (0.1dB gain flatness up the 12MHz under 150Ω load and AV = +2) with minimal peaking (typically 2dB maximum) for any gain setting and under both heavy and light loads. This along
with fast settling time (68ns) and low distortion allows the device to operate well in ADC buffer, and high frequency filter
applications as well as other applications.
This device family offers professional quality video performance with low DG (0.01%) and DP (0.01°) characteristics. Differential
Gain and Differential Phase characteristics are also well maintained under heavy loads (150Ω) and throughout the output voltage
range. The LMH664X family is offered in single (LMH6642), dual (LMH6643), and quad (LMH6644) options. See ordering information
for packages offered.
Applications
| • | Active filters |
| • | CD/DVD ROM |
| • | ADC buffer amp |
| • | Portable video |
| • | Current sense buffer |
|
Also Recommended
| LMH6612▲ | Higher 345 MHz Bandwidth With Rail To Rail Output |
| LMH6619▲ | 130 MHz Bandwidth With Lower 1.25mA Supply Current And Rail To Rail Input And Output |
|
|
LMH6643
LMH6612
