MAX2165 Просмотр технического описания (PDF) - Maxim Integrated

Номер в каталоге

Компоненты Описание

производитель

MAX2165

Single-Conversion DVB-H Tuner

Maxim Integrated 

Single-Conversion DVB-H Tuner

Typical Operating Characteristics (continued)

(MAX2165 EV kit, VCC = +2.85V, default register settings, VRF_AGC = VBB_AGC = 2.3V, VIOUT = VQOUT = 500mVP-P, TA = +25°C,

unless otherwise noted.)

POWER-DETECTOR OUTPUT VOLTAGE

vs. RF INPUT POWER

4

40kΩ PULLUP TO 2.85V

PD_TH[2:0] = 111

3

REFERENCE BUFFER OUTPUT SIGNAL

MAX2165 toc13

10kΩ || 10pF LOAD

200mV/div

2

1

PD_TH[2:0] = 000

0

-70

-60

-50

-40

-30

RF INPUT POWER (dBm)

20ns/div

Pin Description

PIN

NAME

FUNCTION

1

SDA

Serial-Data Input/Output. Requires a pullup resistor to VCC.

2

SCL

Serial-Clock Input. Requires a pullup resistor to VCC.

3

N.C.

No Connection. Connect this pin to ground.

4

RFIN

RF Input. Internally matched to 75Ω. Requires a DC-blocking capacitor.

5

ADDR

Address-Select Input. Selects the I2C slave address. See Table 20.

6

VCC_RF

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.

7

LEXT

External Inductor Connection. Connect to VCC with a 39nH inductor.

8

RF_AGC

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.

9

SHDN

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.

10

STBY

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

11

OVLD_DET 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.

12

VCC_BB

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.

13

BBQ-

Inverting Quadrature Baseband Output

_______________________________________________________________________________________ 7

Share Link: