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(b.) Telephone Speech IC
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Part No.
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Features
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VCC
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Package
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PD(mW)
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TEA1098
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Speech and Handsfree IC
Line interface
*Operating voltage down to 1.6 V.
*Built-in adjustable DC voltage regulator.
*Transmitting amplifier usable with dynamic, magnetic, electret or
piezo-electric microphones.
*DTMF input for confidence tone.
*MUTE input for pulse or DTMF dialling.
Supplies
*Provides 3.35V regulated supply for microcontrollers or dialers.
*Optimized power supply that depends on line current.
*Filtered 2V for electret microphone.
*PD pin can have chip power-down.
Handsfree
*Asymmetrical high input impedance for electret microphone.
*Loudspeaker amplifier with single-ended rail-to-rail output and
externally adjustable gain.
*Loudspeaker amplifier with dynamic limiter and logarithmic volume
control.
*Duplex controller with Signal and noise envelope monitors for both
channels and have sensitivities and switch-over and idle mode
timing adjustable.
*Voice switch control have adjustable switching range and constant
sum of gain during switching.
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12V
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SOP-40 SSOP-40
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TEA1098/A
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400mW
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TEA1062N/AN
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Low Voltage Transmission Circuit with Dialler Interface
* Low d.c. line voltage; operates down to 1.6V
(excluding polarity guard).
* Voltage regulator with adjustment static resistance.
* Provides supply with limited current for external circuitry.
* Symmetrical high-impedance inputs (64kΩ)
for dynamic, magnetic or piezoelectric microphones.
* Asymmetrical high-impedance inputs (32kΩ)
for electrets microphones.
* DTMF signal input with confidence tone.
* Mute input for pulse or DTMF dialing.
* Receivering amplifier for several types of earphones.
* Large amplification setting range on microphone and earpiece
amplifiers.
* Line loss compensation facility, line current depedant
(microphone and earpiece amplifiers).
* Gain control adaptable to exchange supply.
* Possibility to adjust the d.c. line voltage
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12V
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DIP-16 SOP-16
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640mW
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TEA1110A
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Low Voltage Versatile Telephone Transmission Circuit
with Dialler Interface
Low DC line voltage; operates down to 1.6V (excluding voltage
drop over external polarity guard)
* Voltage regulator with adjustable DC voltage
* Provides a supply for external circuits
* Symmetrical high impedance inputs (64kΩ) for dynamic, magnetic
or piezo-electric microphones
* Asymmetrical high impedance input (32kΩ) for electric
microphones
* DTMF input with confidence tone
* MUTE input for pulse or DTMF dialling
* Receiving amplifier for dynamic, magnetic or piezo-electric
earpieces
* AGC line loss compensation for microphone and earpiece
amplifiers.
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12V
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DIP-14 SOP-14
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588mW/384mW
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L6726
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Universal Speech Circuit
*Minimum number of inexpensive external components, 5
capacitors and 11 resistors.
*Mute function for operation with DTMF-generator.
*Transmit and receive gain regulation for automatic loop loss
compensation.
*Extended current and voltage range 5~130mA, down to 2V.
*Differential microphone input for good balance to ground.
*Balanced receiver output stage.
*Short start-up time.
*Stabilized DC-supply for low current CMOS dialers and/or
electret microphones.
*DTMF-input controlled by mute.
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22V
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SOP-18 DIP-18
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-
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TEA1112A*
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Low Voltage Versatile Telephone Transmission Circuit
with Dialler Interface
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12V
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DIP-14 SOP-14
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588mW/384mW
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(c.) Voice Switched Speaker-phone IC
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Part No.
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Features
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VCC
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Package
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VCR
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L38812
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Voice Switch Circuit for Handsfree Speakerphone TAM
* Low power consumption, 1.0mA in all at the typical voltage
3.3V
* Background noise compensation in the transmitting channel
with hold function.
* Good noise performance.
* The least external components needed for function.
* Settable gain dynamics (25 or 50dB)
* Balanced inputs of both the channel input amplifiers.
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3.3V
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DIP-18 SOP-16
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-
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MC34118
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Voice Switched Speaker-Phone Circuit
* Attenuator gain range: 52dB (between Transmit and Receive)
* For line-powered applications : 3~6.5V low voltage operation
* For improved sensitivity :4-point signal sensing
* For Transmit and Receive paths: background noise monitors
* External resistors set microphone amplifier gain
* Mute function included
* Chip disable: active or standby operation
* During dial tone presence: dial tone detector to inhibit receive idle
mode
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3.5V ~ 6.5V
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DIP-28 SOP-28 SDIP-28
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27dB(Min)
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MC33218
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Voice Switched Speaker-Phone with Microprocessor Interface
* Supply Voltage Range: 2.7V ~ 6.5V
* Attenuator Range: 53 or 27 dB (selectable)
* 2 Point Sensing with background Noise monitor in each path
* Microprocessor port for control of:
Volume control(40dB range over 16 levels)
Mute microphone amplifier
Force to receive transmit, or idle modes
Attenuator range selection(27 or 53dB)
*includes are amplifiers, attenuators, level detectors and control algorithm
* A dial tone detector prevents fading of dial tone.
* A chip disable pin permits conserving power when the circuit is not in use.
* The data port can be operated at up to 1.0MHz
* I t can be used in conjunction with a variety of speech networks.
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2.7V~6.5V
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DIP-24 SOP-24
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34.0 ~ 46.0dB
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MC34018
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Voice Switched Speaker-Phone Circuit
* Chip Select pin for Power conservation (active/standby mode).
* Integrated all necessary active circuitry for a hand-free telephone
into one single chip.
* Operating under wide dynamic range through signal compression
technology.
* Build-In voltage regulators illuminate external regulators for lining
operation.
* Monitoring system for background noise level.
* Background sound level compensation for transmit and
receive levels as well as the background level.
* Power audio amplifier for typical 100mW output (into 25Ω) with
peak limiting for speaker to minimize distortion.
* Volume control function for external volume control circuit.
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6.0V~11.0V
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DIP-28 SOP-28 SSOP-28 SDIP-28
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24.5 ~ 32.5dB
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(d.) For Cordless Phone
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Part No.
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Features
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VCC
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Package
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PD(mW)
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UA31136
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FM IF Detector IC for Cordless Telephone
* Low operation voltage: VCC = 1.8 ~ 5.5V
* Excellent temperature characteristics
* High sensitivity
12dB sensitivity: 11dBμV EMF (Input 50Ω)
* High intercept point: 96dBμV (Input 50Ω)
* Quadrature detector, both ceramic and coil discriminators are
usable.
* Built-in 2nd MIX
Operating frequency: 10 ~ 100MHz
* Built-in noise detection circuit
* RSSI function
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1.8V~5.5V
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TSSOP-16
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560mW
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UA31180*
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Filterless IF Detector IC for Cordless Telephone
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1.8V~5.5V
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SSOP-24
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780mW
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MC3361BP
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Low Voltage/Power Narrow Band FM IF
*Low power consumption (4.0mA typ. at Vcc=4.0V)
*Excellent input sensitivity
(-3dB limiting, 2.0mVrms typ.)
*Minimum number of external components required.
*Operating Voltage: 2.5~7.0V
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2.5V~7.0V
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DIP-16 SOP-16 TSSOP-16
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-
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3362
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Low Power FSK IF IC
* Operation Voltage: 3.5V ~ 5.5V
* Low current consumption: 2.1mA@ VDD=3.5V
* Operating frequency up to 30MHz
* Single chip FSK receiver
* -102dBm sensitivity (BER=10E-3)
* Full ESD protection
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3.5V~5.5V
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SOP-8
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-
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8507
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4mA Compander
* Wide Supply Voltage (2.4 ~ 7V )
* Easy Gain Control
* Mute/Bypath Logic
* Data In/Out Pin
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7.0V(Max)
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DIP-20 SOP-20
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1000mW/410mW
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UTA31101
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Compander IC For Cordless Telephone
* Wide operating supply voltage range: VCC=1.8~9V
* For noise reduction, compressor and expandor are incorporated
into a package.
* Low operating supply voltage and small consumption current
make this IC suitable for its application to the sets using the
battery such as the codeless telephone set. etc.
VCC(MIN)=1.8V (TA=25°C
ICCQ=2.7mA (Typ.) (VCC=3V, TA=25°C)
* Recommendable operating supply voltage: VCC=3V
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9.0V(Max)
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DIP-16 SOP-16 TSSOP-16
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1000mW/370mW
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ULA1235
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FM IF System Applications
* IF amplifier, limiter.
* Tuning meter null circuit. functions
* AF preamplifier.
* Signal intensity muting drive output.
* Quadrature detection
* Detuning muting drive output.
* AF signal muting circuit.
* IF amplifier stop circuit.
* AFC, tuning meter drive output.
* Signal meter drive output.
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14V(Max)
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DIP-16 SOP-16
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650mW
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