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S1T8531 Dataheets PDF



Part Number S1T8531
Manufacturers Samsung semiconductor
Logo Samsung semiconductor
Description WIDEBAND FM/FSK IF RECEIVER
Datasheet S1T8531 DatasheetS1T8531 Datasheet (PDF)

WIDEBAND FM/FSK IF RECEIVER S1T8531 INTRODUCTION 16-SOP-225 The S1T8531 is a wideband FM / FSK receiver designed for wideband FSK data and analog FM applications. It is fabricated using Samsung’s ASP5HB 0.5um advanced BiCMOS process. The S1T8531 contains high gain IF amplifier with received signal strength indicator (RSSI), a wideband FM quadrature demodulator, a baseband filter amplifier and a high speed data slicer with sample & hold function. The IF amplifier has 100dB small signal gain and.

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WIDEBAND FM/FSK IF RECEIVER S1T8531 INTRODUCTION 16-SOP-225 The S1T8531 is a wideband FM / FSK receiver designed for wideband FSK data and analog FM applications. It is fabricated using Samsung’s ASP5HB 0.5um advanced BiCMOS process. The S1T8531 contains high gain IF amplifier with received signal strength indicator (RSSI), a wideband FM quadrature demodulator, a baseband filter amplifier and a high speed data slicer with sample & hold function. The IF amplifier has 100dB small signal gain and 2MHz through 40MHz bandwidth. The wideband FM quadrature demodulator has demodulation bandwidth greater than 1MHz. The baseband filter amplifier is a wideband buffer and it can be configured as a second-order sallen-key low pass filter. The data slicer is a comparator that is designed to square up the data signal with data rates up to 2Mbps. FEATURES • • • • • • • Operating voltage range Typical supply current : 2.2 to 5.5V : 5.5mA at 3.6V Operating frequency range : 2MHz to 40MHz High Gain (100dB) and Wideband (2MHz to 40MHz) IF Amplifier Quadrature Demodulator with Greater than 1MHz Bandwidth High Speed Data Slicer Operating Upto 2Mbps with Sample & Hold RSSI Dynmic range : Typ : 60dB APPLICATION • Wideband FM / FSK Wireless Communication Systems ORDERING INFORMATION Device +S1T8531X01-S0B0 + : New Product Package 16-SOP-225 Operating Temperature - 10°C to + 70°C 1 S1T8531 WIDEBAND FM/FSK IF RECEIVER BLOCK DIAGRAM IFIN 16 IFIP 15 GND2 14 SHEN 13 RSSI 12 DSO 11 SHO 10 DSIN 9 Sample Hold A RSSI 5pF 1 1 2 3 4 5 6 7 8 GND1 VCC1 QIN VCC2 QOUT BIN BOUT DSIP PIN CONFIGURATION GND1 VCC1 QIN VCC2 QOUT BIN BOUT DSIP 1 2 3 4 16 15 14 13 IFIN IFIP GND2 SHEN RSSI DSO SHO DSIN S1T8531 5 6 7 8 12 11 10 9 2 WIDEBAND FM/FSK IF RECEIVER S1T8531 PIN DESCRIPTION Pin 1 2 3 Name GND1 VCC1 QIN VCC 3 Schematic Description Ground. (Pin1 and Pin14 are connected internally) Supply. (Pin2 and Pin4 are connected internally) Quadrature demodulator tank input. 4 5 VCC2 QOUT VCC Supply. (Pin2 and Pin4 are connected internally) Quadrature demodulator output. 5 6 7 BIN BOUT VCC Baseband filter buffer amplifier input. Baseband filter buffer amplifier output. 6 7 8 9 DSIP DSIN 8 VCC Data slicer positive input. Data slicer negative input. 9 3 S1T8531 WIDEBAND FM/FSK IF RECEIVER PIN DESCRIPTION (Continued) Pin 10 Name SHO Schematic Description Sample and hold output. 7 11 DSO VCC 11 Data slicer output. 12 RSSI VCC RSSI output. 12 13 SHEN VCC Sample and hold enable input. High signal input enable sample and hold function and low signal input disable sample and hold function . 13 14 15 16 GND2 IFIP IFIN Ground. (Pin1 and Pin14 are connected internally) IF amplifier differential inputs. DC blocking is required. VCC 15 16 4 WIDEBAND FM/FSK IF RECEIVER S1T8531 ABSOLUTE MAXIMUM RATINGS Characteristic Maximum Supply Voltage Operating temperature Storage Temperature Symbol VCC Ta TSTG Value 6 -10 to + 70 -55 to + 150 Unit V °C °C RECOMMENDED OPERATING CONDITIONS Parameter Power Supply Voltage Voltage applied to any pin Symbol VCC VIN Value 2.2 to 5.5 - 0.3 to Vcc + 5.5 Unit V V 5 S1T8531 WIDEBAND FM/FSK IF RECEIVER ELECTRICAL CHARACTERISTICS ( Vcc = 3.6V, IF = 10.7MHz, fdev = ± 75kHz, fmod = 10kHz,Ta = 25°C, IFin = -47dBm unless otherwise noted. ) Characteristic Current consumption IF Input Frequency 20dB SINAD Sensitivity (Note 2) IF Amplifire Bandwidth (Note 1) IF Amplifier Voltage Gain (Note 1) IF Amplifier Input Impedance (Note 1) Quadrature Demodulator Output Voltage Demodulator Bandwidth (Notes 1 and 2) Baseband Filter Buffer Amplifier Bandwidth Baseband Filter Buffer Amplifier Voltage Gain Data Slicer Maximum Operating Frequency (Notes 1 and 2) RSSI Dynamic Range RSSI Output Level Symbol Icc IFfreq VSEN BWIF ∆G IF RIIIF Vo(DEM) BWDEM BWAMP DG AMP BWDS RSSI Vo(RSSI) Test Condition Min 2 2 95 100 0.6 1 -3 1 50 0.5 Typ 5.5 10.7 -95 101 1.5 150 1 2 0 2 60 Max 7.0 40 -81 40 200 +3 2.0 Unit mA MHz dBm MHz dB kΩ mVrms MHz MHz dB Mbps dB V NOTES: 1. Not 100% AC tested but guaranteed by design and characterization. 2. Measured result on evaluation board with proper impedance matching. 6 WIDEBAND FM/FSK IF RECEIVER S1T8531 FUNCTIONAL DESCRIPTION General The S1T8531 is a wideband FM / FSK receiver designed for use in analog FM and digital FSK systems such as 900MHz / 2.4GHz ISM band analog / digital cordless phones and wideband data links with data rates up to 2Mbps. It contains IF amplifier, quadrature detector, baseband filter amplifier and data slicer with sample and hold function. IF Amplifier The IF amplifier section is composed of seven differential stage with total gain of 100dB at 10.7MHz. The input impedance at 10.7MHz is 1.5kΩ. For 10.7MHz ceramic filter applications, an external 430Ω resistor must be placed between IFP(Pin15) and IFN(pin16) to provide the equivalent load impedance of 330Ω that is required by the filter. Quadrature Demodulator The quadrature d.


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