SDA4331X SIEMENS | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 13
Technical content
Semiconductor Group 1 04.96 PLL withI2C Bus for AM/FM Receivers SDA 4331X
- Frequency resolution of 1, 5 and 10 kHz AM and 12.5, 25 and 50 kHz FM
- P-DSO-24 package
1.2 Application
The SDA 4331X provides separated input and output ports for AM and FM and is well suited for extremely fast loop settling times in the FM mode. Type Ordering Code Package SDA 4331X Q67100-H5139 P-DSO-24-1
1 Overview
1.1 Features
- 155 MHz FM and 40 MHz AM input frequency
- 30 mVeff AM and 50 mVeff FM sensitivity
- Additional open drain ports controlled byI 2C Bus
- 2-pin quartz oscillator
- Fast phase detector with short anti-backlash pulses and polarity reversal
- Charge pump current programmable in four steps up to 4.5 mA
Semiconductor Group 2 04.96
1.3 Pin Configuration
(top view) Figure 1 P-DSO-24-1
Semiconductor Group 3 04.96
1.4 Pin Definitions and Functions
Pin No. Symbol Input (I) Output (O) Function
1 VDD1 Supply voltage digital (5 V)
2 SCL I Clock I2C Bus
3 SDA I/O Data I2C Bus
4 A0 I Address selection, sets the LSB of the IC-address
5 N.C. 6 … 9 SA1 … SA4 O 10 V open drain output, controlled via I 2C Bus
10 AM/FM O 10 V open drain output, indicating the operation
mode (H = AM)
11 FM IN I Input for the FM signal from VCO
12 GND AN Ground analog
13 AM IN I Input for the AM signal from VCO
14 N.C. 15 N.C. IREF I Reference current, setting the base current level for the charge pumps
17 PD FM O FM charge pump output
18 PD AM O AM charge pump output
19 PD FMA O Source follower output FM
20 PD AMA O Source follower output AM
21 VDD2 Supply voltage digital for charge pump and source
followers (up to 10 V)
22 OSC FB I/O Oscillator feedback, quartz terminal
23 OSC IN I Oscillator input, quartz terminal, optionally input
24 GND Ground digital
Semiconductor Group 4 04.96
1.5 Functional Block Diagram
Semiconductor Group 5 04.96
2 Functional Description
The SDA 4331X is a radio PLL controlled viaI2C Bus for frequency synthesis in the AM and FM range.
3 Circuit Description
The reference frequency for the PLL is derived from the quartz oscillator OSC1). The R-prescaler can be adapted to quartz frequencies of 4, 8 or 10.25 MHz, respectively, yielding an internal 50 kHz reference. Programming the R-counter sets the phase detector reference frequency to 1, 5 or 10 kHz in the AM mode or to 12.5, 25 or 50 kHz in the FM mode. The VCO frequency is set by programming the A/N-counter which operates as dual-modulus counter for FM and AM using a divide by 4/5 swallow counter. The phase detector drives two different charge pumps for AM and FM mode. Additional source followers are connected to the charge pump. There are four programmable current levels for each charge pump. The supply voltage for the charge pump and the source followers is supplied via the VDD2 pin and can reach 10 V maximum. AM/FM is an open drain output as well as the additional outputs SA1 … SA4 which are controlled by I 2C Bus. The I2C Bus interface provides slave receiver functions. There are two addresses selected by the A0 pin. TheI2C-protocol (seediagram 1) contains one string for programming all counters and functions. The transfer may be stopped optionally after each word if the remaining functions are not to be altered. After power ON all control signals are undefined, so that the complete write sequence must be executed. 1) The power dissipation of the quartz is given by: Pv = 2× R1 (Π× fQ × (C O +C L)× VDD )2 R1 … Series resistance of the quartz fQ … Quartz frequency C O … Parallel capacitance of the quartz C L … Load capacitance, including input capacitance of the IC
Semiconductor Group 6 04.96
4 Electrical Characteristics
Note: Maximum ratings are absolute ratings; exceeding only one of these values may cause irreversible damage to the integrated circuit.
4.2 Operational Range
Note: In the operating range the functions given in the circuit description are fulfilled.
4.1 Absolute Maximum Ratings
TA = – 25°C to 85 °C Parameter Symbol Limit Values Unit Remarks min. max. Supply voltage VDD1 – 0.3 6 V Supply voltage VDD2 – 0.3 10.5 V Input voltage VIN – 0.3 VDD1 + 0.3 V Power dissipation per output PQ 10 mW Power dissipation Ptot t.b.d. mW Storage temperature TS – 40 125 °C Output voltage SA1 … SA4, AM/FMVQH 10.5 V ESD voltage (HBM: 1.5 kΩ , 100 pF)VESD – 1 1 kV Parameter Symbol Limit Values Unit min. typ. max. Supply voltage VDD1 4.5 5 5.5 V Supply voltage VDD2 9 10.3 V Supply current IDD1 41 0 m A Supply current1) IDD2 0.5 mA Ambient temperature TA – 25 + 85 °C Output voltage SA1 … SA4, AM/FMVQH VDD2 V 1) Measurement conditions: No load on pins 17 … 20.
Semiconductor Group 7 04.96
4.3 AC/DC Characteristics
Parameter Symbol Limit Values Unit Test Condition min. typ. max. Input AMIN Input voltage (sine wave) VIN 30 mVeff VDD1 = 4.5 V
0.5 MHz <fIN < 40 MHz
Input current IIN – 50 50 µA0 ≤ VIN ≤ VDD1 Input FMIN Input voltage (sine wave) VIN 120 mVeff mVeff VDD1 = 4.5 V
20 MHz <fIN < 120 MHz
10 MHz <fIN < 155 MHz
Input current IIN – 100 100 µA0 ≤ VIN ≤ VDD1 Input OSCIN Input voltage (sine wave) VIN 100 150 200 mVeff mVeff mVeff VDD1 = 4.5 V fIN = 4 MHz fIN = 8 MHz fIN = 10.25 MHz Input capacitance C 10 pF Input current IIN – 30 30 µA0 ≤ VQ ≤ VDD1 Input/Output SDA H-input voltage VIH 0.7× VDD1 VDD1 V L-input voltage VIL 0 0.3 × VDD1 V L-output voltage VQL 0.4 V IQL = 3 mA,VDD1 = 5 V, C L = 400 pF Input leakage currentILeakage – 10 10 µA0 ≤ VIN ≤ VDD1 Input capacitance C 10 pF
Semiconductor Group 8 04.96 Inputs SCL, A0 H-input voltage VIH 0.7× VDD1 VDD1 V L-input voltage VIL 0 0.3 × VDD1 V Input leakage currentILeakage – 10 10 µA0 ≤ VIN ≤ VDD1 Input capacitance C 10 pF Outputs SA1, SA2, SA3, SA4, AM/FM (open drain outputs) L-output voltage VQL VQL 0.4 0.1 V V IQL = 1 mA VDD1 = 5 V IQL = 0.1 mA InputIREF Voltage atIREF VIREF 1.2 V IIN = 100µA Output PDFM PD current A IQ ± 4.5 mA VPD = 4 V PD current B IQ ± 3m A PD current C IQ ± 1.5 mA PD current D IQ ± 150 µA Output PDAM PD current A IQ ± 450 µA VPD = 4 V PD current B IQ ± 300 µA PD current C IQ ± 150 µA PD current D IQ ± 30 µA
4.3 AC/DC Characteristics (cont’d)
Parameter Symbol Limit Values Unit Test Condition min. typ. max.
Semiconductor Group 9 04.96 Note: The listed characteristics are ensured over the operating range of the integrated circuit. Typical characteristics specify mean values expected over the production spread. If not otherwise specified, typical characteristics apply atTA = 25°C and the given supply voltage. Output PDFMA H-output voltage VQH 7.5 7.7 V IQH = 2 mA VPD FM =VDD2 = 9 V H-output current IQH 25m A VPD FM =VDD2 = 9 V L-output current IQL 10 µA VPD FM = GND VQ = 4 V Output PDAMA H-output voltage IQH 1 2.5 mA VPD AM = 5 V L-output current IQL 0.1 mA VPD AM = GND VQ = 5 V Table 1 Programming of Mode and Frequency Resolution AM/FM R1 R0 Mode Frequency Resolution [MHz ] 0 0 1 FM 12.5 01 0 F M 2 5 01 1 F M 5 0 10 1 A M 1 11 0 A M 5 11 1 A M 1 0 Parameter Symbol Limit Values Unit Test Condition min. typ. max.
Semiconductor Group 10 04.96 Table 2 Programming R-prescaler RP1 RP0 Divide Ratio Quartz Frequency [MHz ] 0 0 1:1 Test mode only 0 1 1:80 4 1 0 1:160 8 1 1 1:205 10.25 Table 3 Programming Phase Detector PD1 PD0 Current Level PPD Polarity 0 0 D 0 Normal 0 1 C 1 Invers 10 B 11 A Table 4 Programming Test Mode T1 T2 SA1 SA2 SA3 SA4 T3 Operation 0 0 Controlled by I 2C Bus 0 Normal 1 0 PD_MUX Clk_50 kHz N_A_CLN 1 Test reset
Semiconductor Group 11 04.96 Diagram 1:I2C Protocol [STOP or START ]: Optional STOP or START condition, after power ON the complete sequence has to be programmed. Slave-receive (Write) START ACK MSB N14 N13 N12 N11 N10 ACK LSB ACK [STOP or START ] AM/FM PD1 PD0 IF SA4 SA3 SA2 SA1 ACK [STOP or START ] RP1 RP0 ACK [STOP or START ] PPD T0 (= 0) T1 (= 0) T2 (= 0) T3 (= 0) X X X ACK STOP or START A/N-counter
Semiconductor Group 12 04.96 Figure 3 Application Circuit for AM and FM Charge Pump Output
Semiconductor Group 13 04.96
5 Package Outlines
(Plastic Dual Small Outline Package) GPS05144 Sorts of Packing Package outlines for tubes, trays etc. are contained in our Data Book “Package Information”. Dimensions in mmSMD = Surface Mounted Device