MC33215B Freescale Semiconductor, MC33215B Datasheet

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MC33215B

Manufacturer Part Number
MC33215B
Description
Manufacturer
Freescale Semiconductor
Datasheet

Specifications of MC33215B

Max Transmitter Gain
58dB
Receiver Gain (max)
27dB
Operating Temp Range
-20C to 70C
Package Type
SDIP
Pin Count
42
Operating Current
15mA
Operating Temperature Classification
Commercial
Mounting
Through Hole
Lead Free Status / Rohs Status
Not Compliant

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Advance Information
Telephone Line Interface and
Speakerphone Circuit
speakerphone functions. The circuit performs the ac and dc line termination,
2–4 wire conversion, line length AGC and DTMF transmission. The
speakerphone part includes a half duplex controller with signal and noise
monitoring, base microphone and loudspeaker amplifiers and an efficient
supply. The circuit is designed to operate at low line currents down to 4.0 mA
enabling parallel operation with a classical telephone set.
This document contains information on a new product. Specifications and information herein
are subject to change without notice.
MOTOROLA ANALOG IC DEVICE DATA
The MC33215 is developed for use in fully electronic telephone sets with
Highly Integrated Cost Effective Solution
Straightforward AC and DC Parameter Adjustments
Efficient Supply for Loudspeaker Amplifier and Peripherals
Stabilized Supply Point for Handset Microphone
Stabilized Supply Point for Base Microphone
Loudspeaker Amplifier can be Powered and Used Separately
Smooth Switch–Over from Handset to Speakerphone Operation
Adjustable Switching Depth for Handsfree Operation
Base Loudspeaker
External Supply
Microphone
Microphone
Handset
V
DTMF
CC
Base
or
Freescale Semiconductor, Inc.
For More Information On This Product,
MF
HM
BM
LS
This device contains 2782 active transistors.
Go to: www.freescale.com
Auxiliary Input
Simplified Application
Attenuator
Controller
Attenuator
Duplex
AC
Impedance
DC Offset
Driver
Line
R
x
MC33215FB
MC33215B
Motorola, Inc. 1997
Current
Splitter
Device
1:10
Line Current
ORDERING INFORMATION
42
MC33215
Temperature Range
Order this document by MC33215/D
T
PLASTIC PACKAGE
PLASTIC PACKAGE
A
V
CC
DC Slope
= –20 to +70 C
Operating
CASE 848B
FB SUFFIX
(TQFP–52)
Supply
1
B SUFFIX
CASE 858
(SDIP–42)
52 1
Receive Signal
Handset Earpiece
Telephone
Line
TQFP–52
Package
SDIP–42
Rev 0
1

Related parts for MC33215B

MC33215B Summary of contents

Page 1

... CC External Supply Base Loudspeaker This document contains information on a new product. Specifications and information herein are subject to change without notice. For More Information On This Product, MOTOROLA ANALOG IC DEVICE DATA MC33215FB MC33215B Simplified Application AC DC Offset Impedance Current Splitter Line Driver ...

Page 2

... Freescale Semiconductor, Inc. Line Driver and Supply AC and DC Termination of Telephone Line Adjustable Set Impedance for Real and Complex Termination Efficient Supply Point for Loudspeaker Amplifier and Peripherals Two Stabilized Supply Points for Handset and Base Microphones Separate Supply Arrangement for Handset and ...

Page 3

... Freescale Semiconductor, Inc. MAXIMUM RATINGS Rating Peak Voltage at VLN Maximum Loop Current Voltage at VLS (if Powered Separately) Voltage at VHF (if Externally Applied) Voltage at SPS, MUT, PRS, LSM Maximum Junction Temperature Storage Temperature Range NOTE: ESD data available upon request. RECOMMENDED OPERATING CONDITIONS Characteristic ...

Page 4

... Freescale Semiconductor, Inc. ELECTRICAL CHARACTERISTICS (continued) (All parameters are specified PRS = high, MUT = high, SPS = low, LSM = high, test figure in Figure 17 with S1 in position 1, unless otherwise stated.) Characteristic LOGIC INPUTS Logic Low Level Pins PRS, MUT, SPS, LSM Logic High Level Pins PRS, MUT, SPS, LSM ...

Page 5

... Freescale Semiconductor, Inc. ELECTRICAL CHARACTERISTICS (continued) (All parameters are specified PRS = high, MUT = high, SPS = low, LSM = high, test figure in Figure 17 with S1 in position 1, unless otherwise stated.) Characteristic R CHANNEL, LOUDSPEAKER PRE–AMPLIFIER (SPS = HIGH Voltage Gain from (Note 2) RXI RLS mVrms ...

Page 6

... Freescale Semiconductor, Inc. ELECTRICAL CHARACTERISTICS (continued) (All parameters are specified PRS = high, MUT = high, SPS = low, LSM = high, test figure in Figure 17 with S1 in position 1, unless otherwise stated.) Characteristic LOGARITHMIC AMPLIFIERS AND ENVELOPE DETECTORS Maximum Sink Current into TSE or RSE Maximum Sink Current into TBN and RBN ...

Page 7

... Freescale Semiconductor, Inc. PIN FUNCTION DESCRIPTION Pin SDIP–42 TQFP–52 Name Name – 20 N/C Not Connected 22 21 RXS Receive Amplifier Stability 23 22 RXO Receive Amplifier Output 24 23 GRX Earpiece Amplifier Feedback Input 25 24 RXI Receive Amplifier Input – 25 N/C Not Connected – ...

Page 8

... Freescale Semiconductor, Inc. Based on the typical application circuit as given in Figure 18, the MC33215 will be described in three parts: line driver and supplies, handset operation, and handsfree operation. The data used refer to typical data of the characteristics. LINE DRIVER AND SUPPLIES The line driver and supply part performs the ac and dc telephone line termination and provides the necessary supply points ...

Page 9

... Freescale Semiconductor, Inc. from Pin REG by the internal circuit (the 10 A term in the formulas). This built–in feature drops the line voltage and therefore enables parallel operation. The voltage over the line driver has to be limited protect the device. A zener VLN is therefore the maximum advised ...

Page 10

... Freescale Semiconductor, Inc. 100 (%) VCC line VCC(max) (mA (mA) line A. Maximum Available Current at V For instance line current maximum current is available all this current is CC taken, V will be 1.7 V below VLN. When not all this current CC is drawn from V , but for instance only 1.0 mA for biasing of ...

Page 11

... Freescale Semiconductor, Inc. RXI. A second high pass filtering is introduced by the combination of C and low pass filter is created GRX GRX by C and R . The coupling capacitor at the output RXO RXO RXO is not used for setting a high pass filter but merely for dc decoupling. In combination with dynamic ear capsules, the EAR amplifier can become unstable due to the highly inductive characteristic of some of the capsules ...

Page 12

... Freescale Semiconductor, Inc. Logic Inputs SPS MUT PRS Handsfree Normal Handsfree Privacy Handsfree DTMF By applying a logic 0 to Pin MUT, the DTMF mode is entered where the DTMF amplifier is enabled and where the R amplifier is muted. A DTMF signal can be sent to the line x via the MFI input for which the gain A ...

Page 13

... Freescale Semiconductor, Inc. 0.5 VLS 0 –0.5 VLS VLS 0.5 VLS 0 Figure 10. Loudspeaker Amplifier Output Power with External Supply 140 120 100 2.0 3.0 4.0 5.0 6.0 VLS (V) A. Peak–to–Peak Limiter Active The total gain from the telephone line to the loudspeaker ...

Page 14

... Freescale Semiconductor, Inc. Figure 11. Loudspeaker Amplifier Output Power when Line Powered 100 365 k REG1 220 k REG2 R = 365 REG1 LSP Infinite REG2 LSP R = 365 k 40 REG1 R = Infinite REG2 LSP (mA) line The quality of the audio output of the loudspeaker amplifier is mainly determined by the distortion level. To keep high quality under difficult supply conditions, the MC33215 incorporates a peak– ...

Page 15

... Freescale Semiconductor, Inc Switching depth as performed in the SWD attenuators To avoid howling, the maximum possible loop gain should be below 0 dB and preferably below –10 dB for comfort practical telephone design, both the A A will be less than 20 dB thus a switching depth of RXBM(max will give a loop gain of less than –10 dB. An optimized sidetone network is of high importance for handsfree operation ...

Page 16

... Freescale Semiconductor, Inc. TSE > RSE TSE > TBN + The resistors for the sensitivity setting have to be coupled capacitively to the pins for dc decoupling, and also to create a high pass filter to suppress low frequent background noises like footsteps and 50 Hz. The switch–over timing is performed by charging and discharging the C capacitor. The switch– ...

Page 17

... Freescale Semiconductor, Inc. Z VDD 620 V DD Gnd V Supply C HM1 33 n HM1 V HMIC HM HM2 C HM2 BM1 33 n BM1 C V BM2 BMIC BM2 C R TSA TSA 470 n 2.2 k TSA T Log–Amp TSE x and C Envelope TSE VHF 330 n Detectors TBN C TBN 4.7 R AGC AGC ...

Page 18

... Freescale Semiconductor, Inc. Z VDD 620 C VDD V DD 100 Gnd V DD Supply MC33215 VMC C R HM1 HM1 MHM 33 n 1.0 k HM1 C HM2 HMIC 33 n HM2 R VHF HM2 AGC 1 BM1 MBM 1.0 k BM1 33 n 1.0 k BM1 C T Attenuator 10 F BM2 BMIC BM2 R BM2 AGC 1 ...

Page 19

... Freescale Semiconductor, Inc DETAIL A –A– –D– B 0.20 (0.008) H A–B M 0.05 (0.002) A–B V 0.20 (0.008) C A– DETAIL C For More Information On This Product, MOTOROLA ANALOG IC DEVICE DATA MC33215 OUTLINE DIMENSIONS FB SUFFIX PLASTIC PACKAGE CASE 848B–04 (TQFP–52) ISSUE C ...

Page 20

... Freescale Semiconductor, Inc. –A– –T– SEATING PLANE 0.25 (0.010 Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “ ...

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