Datasheet LTC6400-8 (Analog Devices) - 5

LTC6400-8
AC ELECTRICAL CHARACTERISTICS Specifi cations are at TA = 25°C. V+ = 3V, V– = 0V, VOCM = 1.25V, ENABLE = 0V, No RL unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
P1dB,140M 1dB Compression Point RL = 375Ω (Notes 5, 7) 19.2 dBm NF140M Noise Figure RS = 400Ω, RL = 375Ω 7.7 dB eIN,140M Input Referred Voltage Noise Density Includes Resistors (Short Inputs) 3.7 nV/√Hz eON,140M Output Referred Voltage Noise Density Includes Resistors (Short Inputs) 9.3 nV/√Hz
240MHz Input Signal
HD2,240M/ Second-Order Harmonic Distortion 2VP-P,OUT, RL = 200Ω –71/–53 dBc HD3,240M 2VP-P,OUT, No RL –73/–59 dBc IMD3,240M Third-Order Intermodulation 2VP-P,OUT Composite, RL = 200Ω –64 dBc (f1 = 239.5MHz f2 = 240.5MHz) 2VP-P,OUT Composite, No RL –68 dBc OIP3,240M Third-Order Output Intercept Point 2VP-P,OUT Composite, No RL (Note 7) 37.8 dBm (f1 = 239.5MHz f2 = 240.5MHz) P1dB,240M 1dB Compression Point RL = 375Ω (Notes 5, 7) 18.2 dBm NF240M Noise Figure RS = 400Ω, RL = 375Ω 8.1 dB eN, 240M Input Referred Voltage Noise Density Includes Resistors (Short Inputs) 3.7 nV/√Hz eON,240M Output Referred Voltage Noise Density Includes Resistors (Short Inputs) 9.6 nV/√Hz
300MHz Input Signal
HD2,300M/ Second-Order Harmonic Distortion 2VP-P,OUT, RL = 200Ω –67/–46 dBc HD3,300M 2VP-P,OUT, No RL –69/–50 dBc IMD3,300M Third-Order Intermodulation 2VP-P,OUT Composite, RL = 200Ω –57 dBc (f1 = 299.5MHz f2 = 300.5MHz) 2VP-P,OUT Composite, No RL –61 dBc OIP3,300M Third-Order Output Intercept Point 2VP-P,OUT Composite, No RL (Note 7) 34.8 dBm (f1 = 299.5MHz f2 = 300.5MHz) P1dB,300M 1dB Compression Point RL = 375Ω (Notes 5, 7) 17.6 dBm NF300M Noise Figure RS = 400Ω, RL = 375Ω 8.5 dB eN,300M Input Referred Voltage Noise Density Includes Resistors (Short Inputs) 3.8 nV/√Hz eON,300M Output Referred Voltage Noise Density Includes Resistors (Short Inputs) 10 nV/√Hz IMD3,280M/320M Third-Order Intermodulation 2VP-P,OUT Composite, RL = 375Ω –59 –53 dBc (f1 = 280MHz f2 = 320MHz) Measured at 360MHz
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings performance from –40°C to 85°C but is not tested or QA sampled at these may cause permanent damage to the device. Exposure to any Absolute temperatures. The LTC6400I is guaranteed to meet specifi ed performance Maximum Rating condition for extended periods may affect device from –40°C to 85°C. reliability and lifetime.
Note 5:
Input and output baluns used. See Test Circuit A.
Note 2:
Input pins (+IN, –IN) are protected by steering diodes to either
Note 6:
Measured using Test Circuit B. RL = 87.5Ω per output. supply. If the inputs go beyond either supply rail, the input current should
Note 7:
Since the LTC6400-8 is a feedback amplifi er with low output be limited to less than 10mA. impedance, a resistive load is not required when driving an AD converter.
Note 3:
The LTC6400C and LTC6400I are guaranteed functional over the Therefore, typical output power is very small. In order to compare the operating temperature range of –40°C to 85°C. LTC6400-8 with amplifi ers that require 50Ω output load, the LTC6400-8
Note 4:
The LTC6400C is guaranteed to meet specifi ed performance from output voltage swing driving a given RL is converted to OIP3 and P1dB as 0°C to 70°C. It is designed, characterized and expected to meet specifi ed if it were driving a 50Ω load. Using this modifi ed convention, 2VP-P is by defi nition equal to 10dBm, regardless of actual RL. 64008f 5