Features
n 2.5 dB Typical Midband Noise Figure
n +23 dBm Typical 1 dB Compression Point
n +32 dBm Typical Third Order Intercept

Description
M/A-COM’s AM-191 is a coupler feedback amplifier with
high intercept and compression points. The use of coupler
feedback minimizes noise figure and current in a high
intercept amplifier. This amplifier is packaged in a flatpack.
Due to the internal power dissipation the thermal rise
minimized. The ground plane on the PC board should be
configured to remove heat from under the package.
AM-191 is ideally suited for use where a low noise, high
reliability amplifier is required.
Low Noise Amplifier, 100 - 600 MHz
AM
-191

FP-3
Absolute Maximum Ratings 1
Parameter Absolute Maximum
Max. Input Power +10 dBm
Vbias +15.75 V
Operating Temperature -55°C to +85°C
Storage Temperature -65°C to +125°C
1. Operation of this device above any one of these
parameters may cause permanent damage.
Electrical Specifications 2,3 TA = -55°C to +85°C Case Temperature
Parameter Test Conditions Frequency Units Min. Typ. Max.
Gain @ +25°C 250 MHz dB 23.0 23.5 24.0
Frequency Response — 100-600 MHz dB — — ±1.0
Gain Variation with
Temperature
— 100-600 MHz dB — — ±1.0
1 dB Compression Output Power 100-600 MHz dBm +20 — —
Noise Figure — 100-600 MHz dB — — 4.5
Reverse Transmission — 100-600 MHz dB — -30 -28
VSWR — 100-600 MHz
200-500 MHz
Ratio
Ratio
—
—
—
—
2.5:1
2.0:1
Output IP2 Two-tone inputs up to +10 dBm 100-600 MHz dBm +38 — —
Output IP3 Two-tone inputs up to +10 dBm 100-600 MHz dBm +28 — —
Vbias — — VDC +14.5 +15.0 +15.5
Ibias Vbias = +15.0 VDC — mA — 77 95
Power Dissipation @ +15V Bias — mW — 1155 —
2. All specifications apply when operated at +15 VDC, with 50 ohms source and load impedance.
3. Heat Sinking: Operation at case temperature above 95°C is not recommended. Heat sinking adequate to dissipate 1.25 W must
be provided in use.
V3.00