Features: Complete Receiver on a Chip: Monoceiver™ Mixer
15 dBm 1 dB Compression Point
8 dBm Input Third Order Intercept
500 MHz RF and LO Bandwidths
Linear IF Amplifier
Linear-in-dB Gain Control
MGC or AGC with RSSI Output
Quadrature Demodulator
On-Board Phase-Locked Quadrature Oscillator
Demodulates IFs from 400 kHz to 12 MHz
Can Also Demodulate AM, CW, SSB
Low Power
25 mW at 3 V
CMOS Compatible Power-Down
Interfaces to AD7013 and AD7015 Baseband ConvertersApplication-GSM, CDMA, TDMA, and TETRA Receivers
-Satellite Terminals
-Battery-Powered Communications ReceiversPinout
SpecificationsSupplyVoltage VPS1, VPS2 to COM1, COM2 . . . . . . .+5.5V
Internal PowerDis sipation2. . . . . . . . . . . . . . . . . .600 mW
2.7V to 5.5V Operating Temperature Range
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .25°C to+85°C
4.5V to 5.5V Operating Temperature Range
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40°C to +85°C
Storage Temperature Range . . . . . . . .65°C to +150°C
Lead Temperature Range (Soldering60sec) . . . . .+300°CDescriptionThe AD607 is a 3 V low power receiver IF subsystem for opera-tion at input frequencies as high as 500 MHz and IFs from 400 kHz to 12 MHz. It consists of a mixer, IF amplifiers, I and Q demodulators, a phase-locked quadrature oscillator, AGC detector, and a biasing system with external power-down.
The AD607's low noise, high intercept mixer is a doubly-balanced Gilbert cell type. It has a nominal 15 dBm input referred 1 dB compression point and a 8 dBm input referred third-order intercept. The mixer section of the AD607 also includes a local oscillator (LO) preamplifier, which lowers the required LO drive to 16 dBm.
The gain control input can serve as either a manual gain control (MGC) input or an automatic gain control (AGC) voltage-based RSSI output. In MGC operation, the AD607 accepts an external gain-control voltage input from an external AGC detec-tor or a DAC. In AGC operation, an onboard detector and an external averaging capacitor form an AGC loop that holds the IF output level at ±300 mV. The voltage across this capacitor then provides an RSSI output.
The I and Q demodulators provide inphase and quadrature baseband outputs to interface with Analog Devices' AD7013 (IS54, TETRA, MSAT) and AD7015 (GSM) baseband con-verters. A quadrature VCO phase-locked to the IF drives the I and Q demodulators. The I and Q demodulators can also de-modulate AM; when the AD607's quadrature VCO is phase locked to the received signal, the in-phase demodulator becomes a synchronous product detector for AM. The VCO can also be phase-locked to an external beat-frequency oscillator (BFO), and the demodulator serves as a product detector for CW or SSB reception. Finally, the AD607 can be used to demodulate BPSK using an external Costas Loop for carrier recovery.
AD607 Data Sheet
