SA639DH: Low voltage mixer FM IF system with filter amplifier and data switch
The SA639 is a low-voltage high performance monolithic FM IF system with high-speed RSSI incorporating a mixer/oscillator, two wideband limiting intermediate frequency amplifiers, quadrature detector, logarithmic Received Signal Strength Indicator (RSSI), fast RSSI op amps, voltage regulator, wideband data output, post detection filter amplifier and data switch. The SA639 is available in 24-lead TSSOP (Thin Shrink Small Outline Package).
The SA639 was designed for high-bandwidth portable communication applications and functions down to 2.7 V. The RF section is similar to the famous NE605. The data output provides a minimum bandwidth of 1 MHz to demodulate wideband data. The RSSI output is amplified and has access to the feedback pin. This enables the designer to level adjust the outputs or add filtering.
The post-detection amplifier may be used to realize a low-pass filter function. A programmable data switch routes a portion of the data signal to an external integration circuit that generates a data comparator reference voltage.
SA639 incorporates a Power-down mode which powers down the device when pin 8 (POWER_DOWN_CTRL) is HIGH. Power down logic levels are CMOS and TTL compatible with high input impedance.
SA639DH: Product Block Diagram
Outline 3d SOT355-1
Data Sheets (1)
| Name/Description | Modified Date |
|---|---|
| Low voltage mixer FM IF system with filter amplifier and data switch (REV 4.3) PDF (2.1 MB) SA639 | 10 Jul 2014 |
Application Notes (1)
| Name/Description | Modified Date |
|---|---|
| An FM/IF system for DECT and other high speed GFSK applications (REV 3.0) PDF (1.1 MB) AN1998 | 25 Jul 2014 |
Brochures (1)
| Name/Description | Modified Date |
|---|---|
| RF/IF building blocks for niche handheld devices (REV 1.0) PDF (3.5 MB) 75017548 | 03 Sep 2014 |
Package Information (1)
| Name/Description | Modified Date |
|---|---|
| plastic thin shrink small outline package; 24 leads; body width 4.4 mm (REV 1.0) PDF (353.0 kB) SOT355-1 | 08 Feb 2016 |
Packing (1)
| Name/Description | Modified Date |
|---|---|
| TSSOP24; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 4.1) PDF (227.0 kB) SOT355-1_118 | 15 Apr 2013 |
Supporting Information (1)
| Name/Description | Modified Date |
|---|---|
| Footprint for wave soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-WAVE | 08 Oct 2009 |
Ordering Information
| Product | Status | Package name | RF-IF function | RF frequency [max] (MHz) | IF bandwidth [max] | VCC [min] (V) | VCC [max] (V) | ICC [max] (mA) | Mixer gain [min] (dB) | Mixer Noise Figure [typ] (dB) | 12 dB SINAD fdev=8 kHz (dBm) | 12 dB SINAD fdev=125 kHz (dBm) | 12 dB SINAD fdev=288 kHz (dBm) | Data rate (Mbps) | Data rate (kbps) | RSSI dynamic range [typ] (dB) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SA639DH/01 | Active | TSSOP24 | Single conversion receiver | 500 | 25 | 2.7 | 5.5 | 8.3@3 V | 8.6 | 11@110 MHz | -111 | 2 | 90 | |||
| SA639DH | No Longer Manufactured | TSSOP24 | Single conversion receiver | 500 | 25 | 2.7 | 5.5 | 8.3@3 V | 8.6 | 11@110 MHz | -111 | 2 | 90 |
Package Information
| Product ID | Package Description | Outline Version | Reflow/Wave Soldering | Packing | Product Status | Part NumberOrdering code(12NC) | Marking | Chemical Content | RoHS / Pb Free / RHF | LeadFree Conversion Date | EFR | IFR(FIT) | MTBF(hour) | MSL | MSL LF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SA639DH/01 | | SOT355-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | SA639DH/01,118 (9352 752 93118) | SA639DH | SA639DH/01 |    | Always Pb-free | 0.0 | 2.0 | 5E8 | 1 | 1 |
| Bulk Pack | Active | SA639DH/01,112 (9352 752 93112) | SA639DH | SA639DH/01 | | Always Pb-free | 0.0 | 2.0 | 5E8 | 1 | 1 |
- An FM/IF system for DECT and other high speed GFSK applications SA639DH
- RF/IF building blocks for niche handheld devices SA639DH
- plastic thin shrink small outline package; 24 leads; body width 4.4 mm 74LVC4245A_Q100
- SSOP-TSSOP-VSO-WAVE LPC1114FDH28
- TSSOP24; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... 74LVC4245A_Q100
- SA639DH
- SA639DH
