SA606D ,Low-voltage high performance mixer FM IF systemapplicationsIF AMP OUTRSSI 5 16and will function down to 2.7V. The RF section is similar to thefam ..
SA606D ,Low-voltage high performance mixer FM IF systemPIN CONFIGURATIONThe SA606 is a low-voltage high performance monolithic FM IFD and DK Packagessyste ..
SA606DK ,SA606DKRF COMMUNICATIONS PRODUCTS20 19 18 17 16 15 14 13 12 11IFLIMITERAMPRSSIMIXERQUADOSCILLATOR– ++–VREG ..
SA607D ,Low-voltage high performance mixer FM IF systemPIN CONFIGURATIONThe SA607 is a low voltage high performance monolithic FM IFD and DK Packagessyste ..
SA607DK ,Low-voltage high performance mixer FM IF systemPin Configuration• Low power consumption: 3.5mA typical at 3V• Buffered frequency check output• Mi ..
SA607DK ,Low-voltage high performance mixer FM IF systemapplications (NAMPS/NTACS)• Low external component count; suitable for crystal/ceramic/LC• RF level ..
SC338 , Ultra Low Output Voltage Dual Linear FET Controller
SC338AIMSTRT , Ultra Low Output Voltage Dual Linear FET Controller
SC-35G , Rating at 25℃ Ambient temp. Unless otherwise specified. Single phase, half sine wave, 60HZ,resistive or inductive load.
SC3610 ,stock - FREQUENCY AND CLOCK DISPLAY DRIVER
SC3610 ,stock - FREQUENCY AND CLOCK DISPLAY DRIVER
SC3610 ,stock - FREQUENCY AND CLOCK DISPLAY DRIVER
SA606D-SA606DK
Low-voltage high performance mixer FM IF system
Philips Semiconductors
Product Specification
Replaces data of October 26, 1993 1997 Nov 07
RF Data Handbook
Philips Semiconductors Product specification
SA606Low-voltage high performance mixer FM IF system
DESCRIPTIONThe SA606 is a low-voltage high performance monolithic FM IF
system incorporating a mixer/oscillator, two limiting intermediate
frequency amplifiers, quadrature detector, logarithmic received
signal strength indicator (RSSI), voltage regulator and audio and
RSSI op amps. The SA606 is available in 20-lead SOL
(surface-mounted small outline large package) and 20-lead SSOP
(shrink small outline package).
The SA606 was designed for portable communication applications
and will function down to 2.7V. The RF section is similar to the
famous SA605. The audio and RSSI outputs have amplifiers with
access to the feedback path. This enables the designer to level
adjust the outputs or add filtering.
FEATURES Low power consumption: 3.5mA typical at 3V Mixer input to >150MHz Mixer conversion power gain of 17dB at 45MHz XTAL oscillator effective to 150MHz (L.C. oscillator or external
oscillator can be used at higher frequencies) 102dB of IF Amp/Limiter gain 2MHz limiter small signal bandwidth Temperature compensated logarithmic Received Signal Strength
Indicator (RSSI) with a 90dB dynamic range Low external component count; suitable for crystal/ceramic/LC
filters Excellent sensitivity: 0.31μV into 50Ω matching network for 12dB
SINAD (Signal to Noise and Distortion ratio) for 1kHz tone with RF
at 45MHz and IF at 455kHz SA606 meets cellular radio specifications Audio output internal op amp RSSI output internal op amp Internal op amps with rail-to-rail outputs
PIN CONFIGURATION
Figure 1. Pin Configuration• ESD protection: Human Body Model 2kV
Robot Model 200V
APPLICATIONS Portable cellular radio FM IF Cordless phones Wireless systems RF level meter Spectrum analyzer Instrumentation FSK and ASK data receivers Log amps Portable high performance communication receiver Single conversion VHF receivers
ORDERING INFORMATION
ABSOLUTE MAXIMUM RATINGS
Philips Semiconductors Product specification
SA606Low-voltage high performance mixer FM IF system
BLOCK DIAGRAM
Figure 2. Block Diagram
DC ELECTRICAL CHARACTERISTICSVCC = +3V, TA = 25°C; unless otherwise stated.
AC ELECTRICAL CHARACTERISTICSTA = 25°C; VCC = +3V, unless otherwise stated. RF frequency = 45MHz + 14.5dBV RF input step-up; IF frequency = 455kHz; R17 = 2.4kΩ
and R18 = 3.3kΩ; RF level = -45dBm; FM modulation = 1kHz with ±8kHz peak deviation. Audio output with de-emphasis filter and C-message
weighted filter. Test circuit Figure 3. The parameters listed below are tested using automatic test equipment to assure consistent electrical
characterristics. The limits do not represent the ultimate performance limits of the device. Use of an optimized RF layout will improve many of
the listed parameters.
Philips Semiconductors Product specification
SA606Low-voltage high performance mixer FM IF system
AC ELECTRICAL CHARACTERISTICS (Continued)
CIRCUIT DESCRIPTIONThe SA606 is an IF signal processing system suitable for second IF
systems with input frequency as high as 150MHz. The bandwidth of
the IF amplifier and limiter is at least 2MHz with 90dB of gain. The
gain/bandwidth distribution is optimized for 455kHz, 1.5kΩ source
applications. The overall system is well-suited to battery operation
as well as high performance and high quality products of all types.
The input stage is a Gilbert cell mixer with oscillator. Typical mixer
characteristics include a noise figure of 6.2dB, conversion gain of
17dB, and input third-order intercept of -9dBm. The oscillator will
operate in excess of 200MHz in L/C tank configurations. Hartley or
Colpitts circuits can be used up to 100MHz for xtal configurations.
Butler oscillators are recommended for xtal configurations up to
150MHz.
The output impedance of the mixer is a 1.5kΩ resistor permitting
direct connection to a 455kHz ceramic filter. The input resistance of
the limiting IF amplifiers is also 1.5kΩ. With most 455kHz ceramic
filters and many crystal filters, no impedance matching network is
necessary. The IF amplifier has 43dB of gain and 5.5MHz
bandwidth. The IF limiter has 60dB of gain and 4.5MHz bandwidth.
To achieve optimum linearity of the log signal strength indicator,
there must be a 12dB(v) insertion loss between the first and second
IF stages. If the IF filter or interstage network does not cause
12dB(v) insertion loss, a fixed or variable resistor or an L pad for
simultaneous loss and impedance matching can be added between
the first IF output (Pin 16) and the interstage network. The overall
gain will then be 90dB with 2MHz bandwidth.
The signal from the second limiting amplifier goes to a Gilbert cell
quadrature detector. One port of the Gilbert cell is internally driven
by the IF. The other output of the IF is AC-coupled to a tuned
quadrature network. This signal, which now has a 90° phase
relationship to the internal signal, drives the other port of the
multiplier cell.
The demodulated output of the quadrature drives an internal op
amp. This op amp can be configured as a unity gain buffer, or for
simultaneous gain, filtering, and 2nd-order temperature
compensation if needed. It can drive an AC load as low as 5kΩ with
a rail-to-rail output.
A log signal strength completes the circuitry. The output range is
greater than 90dB and is temperature compensated. This log signal
strength indicator exceeds the criteria for AMPs or TACs cellular
telephone. This signal drives an internal op amp. The op amp is
capable of rail-to-rail output. It can be used for gain, filtering, or
2nd-order temperature compensation of the RSSI, if needed.
NOTE: dB(v) = 20log VOUT/VIN
Philips Semiconductors Product specification
SA606Low-voltage high performance mixer FM IF system
Philips Semiconductors Product specification
SA606Low-voltage high performance mixer FM IF system
Philips Semiconductors Product specification
SA606Low-voltage high performance mixer FM IF system
Figure 5. SA606 Application Circuit Test Set Up
NOTES: C-message: The C-message and de-emphasis filter combination has a peak gain of 10 for accurate measurements. Without the gain, the
measurements may be affected by the noise of the scope and HP339 analyzer. The de-emphasis filter has a fixed -6dB/Octave slope
between 300Hz and 3kHz. Ceramic filters: The ceramic filters can be 30kHz SFG455A3s made by Murata which have 30kHz IF bandwidth (they come in blue), or
16kHz CFU455Ds, also made by Murata (they come in black). All of our specifications and testing are done with the more wideband filter. RF generator: Set your RF generator at 45.000MHz, use a 1kHz modulation frequency and a 6kHz deviation if you use 16kHz filters, or
8kHz if you use 30kHz filters. Sensitivity: The measured typical sensitivity for 12dB SINAD should be 0.35μV or -116dBm at the RF input. Layout: The layout is very critical in the performance of the receiver. We highly recommend our demo board layout. RSSI: The smallest RSSI voltage (i.e., when no RF input is present and the input is terminated) is a measure of the quality of the layout and
design. If the lowest RSSI voltage is 500mV or higher, it means the receiver is in regenerative mode. In that case, the receiver sensitivity
will be worse than expected. Supply bypass and shielding: All of the inductors, the quad tank, and their shield must be grounded. A 10-15μF or higher value tantalum
capacitor on the supply line is essential. A low frequency ESR screening test on this capacitor will ensure consistent good sensitivity in
production. A 0.1μF bypass capacitor on the supply pin, and grounded near the 44.545MHz oscillator improves sensitivity by 2-3dB. R5 can be used to bias the oscillator transistor at a higher current for operation above 45MHz. Recommended value is 10kΩ.
Philips Semiconductors Product specification
SA606Low-voltage high performance mixer FM IF system
Figure 6. ICC vs Temperature
Figure 7. Third Order Intercept Point vs Supply Voltage
Philips Semiconductors Product specification
SA606Low-voltage high performance mixer FM IF system
Figure 8. Mixer Noise Figure vs Supply Voltage
Figure 9. Conversion Gain vs Supply Voltage
Philips Semiconductors Product specification
SA606Low-voltage high performance mixer FM IF system
Figure 10. Mixer Third Order Intercept and Compression
