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Single-Conversion DVB-H Tuner
Typical Operating Characteristics (continued)
(MAX2165 EV kit, V CC = +2.85V, default register settings, V RF_AGC = V BB_AGC = 2.3V, V IOUT = V QOUT = 500mV P-P , T A = +25°C,
unless otherwise noted.)
POWER-DETECTOR OUTPUT VOLTAGE
4
3
2
1
0
vs. RF INPUT POWER
40k ? PULLUP TO 2.85V
PD_TH[2:0] = 111
PD_TH[2:0] = 000
REFERENCE BUFFER OUTPUT SIGNAL
MAX2165 toc13
10k ? || 10pF LOAD
200mV/div
-70
-60
-50 -40
-30
RF INPUT POWER (dBm)
20ns/div
Pin Description
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
NAME
SDA
SCL
N.C.
RFIN
ADDR
VCC_RF
LEXT
RF_AGC
SHDN
STBY
OVLD_DET
VCC_BB
BBQ-
FUNCTION
Serial-Data Input/Output. Requires a pullup resistor to V CC .
Serial-Clock Input. Requires a pullup resistor to V CC .
No Connection. Connect this pin to ground.
RF Input. Internally matched to 75 ?. Requires a DC-blocking capacitor.
Address-Select Input. Selects the I 2 C slave address. See Table 20.
RF Power-Supply Input. Connect to a low-noise, power-supply voltage. Bypass to the PCB ground
plane with a 2200pF and 100nF capacitor placed as close as possible to the pin.
External Inductor Connection. Connect to V CC with a 39nH inductor.
RF Gain-Control Voltage Input. Accepts voltages from 0.4V to 2.3V with 2.3V providing maximum RF
gain. This pin can also be controlled by the OVLD_DET output. See the Typical Application Circuit .
Shutdown Input. Drive this pin low to disable all internal circuits and to put the device into low-power
shutdown mode. Drive this pin high for normal operation.
Standby Input. Controls the power-up sequence of the chip. See the Power-Up Sequence section for
more information on this pin’s operation.
Overload-Detection Output. This output provides an error signal between the internal power-detector
output voltage and an internal programmable reference voltage. This output can be connected to the
RF_AGC input to implement a closed RF automatic gain-control loop.
Baseband Power-Supply Input. Connect to a low-noise power-supply voltage. Bypass to the PCB
ground plane with a 1000pF and 100nF capacitor placed as close as possible to the pin.
Inverting Quadrature Baseband Output
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