AD608
Rev. C | Page 3 of 16
SPECIFICATIONS
T
A
= 25°C, supply = 3 V, dBm is referred to 50 Ω, unless otherwise noted.
Table 1.
Parameter Conditions
1
Min Typ Max Unit
MIXER PERFORMANCE
RF and LO Frequency Range 500 MHz
LO Power Input terminated in 50 Ω −16 dBm
Conversion Gain Driving doubly terminated 330 Ω IF filter, Z
IF
= 165 Ω 19 24 28 dB
Noise Figure Matched input, f
RF
= 100 MHz 11 dB
Matched input, f
RF
= 240 MHz 16 dB
1 dB Compression Point Input terminated in 50 Ω −15 dBm
Third-Order Intercept f
RF
= 240 MHz and 240.02 MHz, f
LO
= 229.3 MHz −5 dBm
Input Resistance f
RF
= 100 MHz (see Table 5) 1.9 kΩ
Input Capacitance f
RF
= 100 MHz (see Table 5) 3 pF
LIMITER PERFORMANCE
Gain Full temperature and supply range 110 dB
Limiting Threshold 3° rms phase jitter at 10.7 MHz −75 dBm
280 kHz IF bandwidth
Input Resistance 10 kΩ
Input Capacitance 3 pF
Phase Variation −75 dBm to +5 dBm IF input signal at 10.7 MHz ±3 Degrees
DC Level Center of output swing (VPOS – 1 V) 2 V
Output Level Limiter output driving 5 kΩ load 400 mV p-p
Rise and Fall Times Driving a 5 pF load 11 ns
Output Impedance 200 Ω
RSSI PERFORMANCE At 10.7 MHz
Nominal Slope At VPOS = 3 V; proportional to VPOS 17.27 20 23.27 mV/dB
Nominal Intercept −85 dBm
Minimum RSSI Voltage −75 dBm input signal 0.2 V
Maximum RSSI Voltage +5 dBm input signal 1.8 V
RSSI Voltage Intercept 0 dBm input signal 1.57 1.82 V
Logarithmic Linearity Error −75 dBm to +5 dBm input signal at IFHI ±1 dB
RSSI Response Time 90% RF to 50% RSSI 200 ns
Output Impedance At midscale 250 Ω
POWER-DOWN INTERFACE
Logic Threshold System active on logic high 1.5 V
Input Current For logic high 75 mA
Power-Up Response Time Active limiter output 200 ns
Power-Down Response Time To 200 μA supply current 400 ns
Power-Down Current 100 μA
POWER SUPPLY
Operating Range −25°C to +85°C 2.7 5.5 V
−40°C to +85°C 3.0 5.5 V
Powered Up Current VPOS = 3 V 7.3 mA
OPERATING TEMPERATURE
T
MIN
to T
MAX
VPOS = 2.7 V to 5.5 V −25 +85 °C
VPOS = 3.0 V to 5.5 V −40 +85 °C
1
VPOS is used to refer collectively to the VPS1 and VPS2 pins.
