SDA4212 SIEMENS | Alldatasheet
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@ Pin programmable prescaler ratio of 1:64 or 1:256 © Symmetrical push-pull input @ Low harmonic wave @ Minimal current consumption of 23 mA Type _—_—=i| OrderingCode | Package SDA 4212 Q67000-A8049 P-DIP-8 SDA 4212-X Q67000-A8145 P-DSO-8 Circuit Description The SDA 4212 has been designed for application in television receivers operating ac- cording to the frequency synthesis tuning principle. The component includes a preampli- fier and an ECL prescaler stage with symmetrical ECL push-pull outputs. It can be oper- ated with a prescaler ratio of 1:64 or 1:256. The component has been designed for a max. input frequency of 1.3 GHz. The preamplifier of the component has been designed with symmetrical push-pull inputs. During the asymmetrical drive of one of the inputs, the other input has to be decoupled to ground by a capacitor (approx. 1.5 nF) of low series inductance. The prescaler stage of the component is comprised of several status controlled master slave flipflops. Their prescaler ratio can be set with the switch-over input M as follows: M to Vs = 1:64 M to ground = 1:256 The symmetrical push-pull outputs of the prescaler include an internal resistor of 500 2 each. The DC voltage level at the outputs is connected to the supply voltage Vs (output "High" = Vs). Typical output deviation is 1.0 Vpp. The typical output modulation is 0.6 Vpp. 206 01.90
nc— a en 1: 64 6 12 3 =) hy GNO UE 596 Siemens Aktiengeselischaft 207
(top view) P-DIP-8 P-DSO-8 cI Oo nc{}1 ata ncoot eto. ned 7 oo nt 7Has 12 C3 6 Foz 123 [az GNOCX 4 stom eno[]4 sm ENO UES Pin Definitions and Functions Pin No. Symbol Function
1 Not connected
‘ Ground
5 M Switch-over input M for prescaler ratio
7 Qi Output
8 Vs Supply voltage
Siemens Aktiengesellschaft 208
Parameter | Symbol | ____Limit Values Remarks min. [max. [Unit | Supply voltage Vs -03 |6 Input voltage vi 25 | Ver (pin 2, pin 3) Output voltage ~ LVo | Vs Vv (pin 6, pin 7) Output current -lo (pin 6, pin 7) | Input voltage Va |-o3 |vs v (pin 5) | | Junction temperature 7, Storage temperature Tso (85/125 | Thermal resistance Risa | 105 KW P-DIP-8 (system-air) | package Overload resistance | Vos ‘2000 | 2000 |v not required (ESD protection single pins float; discharge of 100 pF | pin 4 and pin 8 capacitor through a1.5 ka | always resistor to each pin) | to ground Operating Range ‘Ambient temperature i jo [80 c Siemens Aktiengesellschaft 209
Vs = 5 V; Ta= 25°C Parameter Limit Values Test Test min. | typ. | max. Condition Circuit Current Is 23.5 mA inputs decoupled comsumption outputs n.c.; Mn. Input level vi — 26/11 3/315 | dBm/mV | 70 MHz 1 (“input sensitivity") — 27/10 3/315 | dBm/mv | 80 MHz 1 - 30/7 3/315 | dBm/mvV | 120 MHz 1 ~ 32/5.5 3/315 | dBm/mvV | 250 MHz 1 - 27/10 3/315 | dBm/mvV | 600 MHz 1 - 27/10 3/315 | dBm/mvV | 1000 MHz 1 — 22/18 3/315 | dBm/mvV | 1100 MHz 1 ~ 15/40 3/315 | dBm/mvV | 1200 MHz 1 - 9/80 3/315 | dBm/mV | 1300 MHz 1 Output volt. Vo 0.4 06 Vee Cus 15 pF; 1 deviation fs 1000 MHz 0.8 0.9 Vop Cis 15 pF; 1 fs 1 GHz DC voltage offset. | Avo mV _ 3 of outputs M-input current In 2 pA M = ground 1 "LOW" (prescaler ratio 1:256) M-input current Iu M=Vs 1 "HIGH" uA (prescaler ratio 1:64) M-input voltage Vm v 1 "HIGH" M-input voltage Van. Vv 1 “LOW" Amplitude of the 3rd | As -30 dB f= 700-900MHz; | 1,4 harmonic at output -35 dB M=Vs 2,4 (referenced to 1st harmonic) Siemens Aktiengesellschaft 210
Calibration of Signal Generator Power Measurement Signal 608 Generator Fe) attenuator [3¢ beves {]soe *....No Cable Measurement Configuration for Input Sensivity and Output Voltage Deviation _| Spectrum F~] Analyser L S Frequency sone — f | Counter oy | Signal 1508 ' om | Generator Oscilloscope rt son | Attenuator [7 3 = Ve 4 5 9 ii if it *,..No Cable Cios+Capacities of the measurement devices = 15 pF (for measurement of the output voltage deviation) Siemens Aktiengesellschaft ett
Calibration of Signal Generator Power ee Generator € 3% | Attenuator [3 508 [|soa i *,.. No Cable Measurement Configuration for Input Sensivity and Output Voltage Deviation _| Spectrum [7] Analyser as ' 100nF 3 exe” | co | 1 e Signal 648 TM 2 Le ia Generator Oscilloscope a | Attenuator 3 4 so *... No Cable Cicas+capacities of the measurement devices = 15 pF (for measurement of the output voltage deviation) ‘Siemens Aktiengeselischaft 212
DC Voltage Offset Measurement of Outputs Lone ae : “% T My 2 7 Mr 4 5 “o 15nF Note: press key T until outputs turn over Siemens Aktiengeselischaft 213