Motorola MC33219ADW, MC33219AP Datasheet
Order this document by MC33219A/D
Device
Operating
Temperature Range
Package
SEMICONDUCTOR
TECHNICAL DATA
DW SUFFIX
PLASTIC PACKAGE
CASE 751E
VOICE SWITCHED
SPEAKERPHONE CIRCUIT
PIN CONNECTIONS
ORDERING INFORMATION
MC33219ADW
MC33219AP
TA = – 40° to +85°C
SOIC
Plastic DIP
24
1
P SUFFIX
PLASTIC PACKAGE
CASE 724
24
1
CP2 1 24
(Top View)
V
CC
2
3
4
5
6
7
8
9
10
11
12
23
22
21
20
19
18
17
16
15
14
13
XDI
CPT
TLI
TLO
V
B
C
T
CD
NC
CPR
RLI
RLO
TAO
TAI
MCO
MCI
VLC
MUTE
RXI
RXO
RAI
RAO
GND
Simplified Block Diagram
This device contains 384 active transistors.
Microphone
Transmit
Out
Mute
Vol
Cont
V
B
V
B
V
B
V
B
V
B
BNM
Reg.
Rx Attenuator
MC33219A
V
CC
Tx Attenuator
Attenuator Control
DTD
Speaker
Amplifier
Speaker
CD
Receive
In
BNM
1
MOTOROLA ANALOG IC DEVICE DATA
The Motorola MC33219A Voice Switched Speakerphone Circuit
incorporates the necessary amplifiers, attenuators, level detectors, and
control algorithm to form the heart of a high quality hands–free
speakerphone system. Included are a microphone amplifier with mute,
transmit and receive attenuators, a background monitoring system for both
the transmit and receive paths, and level detectors for each path. An AGC
system reduces the receive gain on long lines where loop current and power
are in short supply. A dial tone detector prevents fading of dial tone. A Chip
Disable pin permits conserving power when the circuit is not in use. The
volume control can be implemented with a potentiometer.
The MC33219A can be operated from a power supply, or from the
telephone line, requiring typically 3.2 mA. It can be used in conjunction with a
variety of speech networks. Applications include not only speakerphones,
but intercoms and other voice switched devices.
The MC33219A is available in a 24 pin narrow body DIP, and a wide body
SOIC package.
• Supply Voltage Range: 2.7 to 6.5 V
• Attenuator Range: 53 dB
• Background Noise Monitor for Each Path
• 2 Point Signal Sensing
• Volume Control Range: Typically 40 dB
• Microphone and Receive Amplifiers Pinned Out for Flexibility
• Microphone Amplifier can be Muted
• Mute and Chip Disable are Logic Level Inputs
• Chip Deselect Pin Powers Down the Entire IC
• Ambient Operating Temperature: –40 to +85°C
• 24 Pin Narrow Body (300 mil) DIP and 24 Pin SOIC
Motorola, Inc. 1995
MC33219A
2
MOTOROLA ANALOG IC DEVICE DATA
MAXIMUM RATINGS
Rating Symbol Min Max Unit
Supply Voltage V
CC
–0.5 7.0 Vdc
Any Input V
in
–0.4 VCC + 0.4 Vdc
Maximum Junction Temperature T
J
– +150 °C
Storage Temperature Range T
stg
–65 +150 °C
NOTE: Devices should not be operated at or outside these values. The “Recommended Operating
Conditions” provide for actual device operation.
RECOMMENDED OPERATING CONDITIONS
Characteristic Symbol Min Typ Max Unit
Supply Voltage (Non–AGC Range) V
CC
3.5 – 6.5 Vdc
(AGC Range) 2.7 – 3.5
Maximum Attenuator Input Signal V
in(max)
– – 300 mVrms
Volume Control Input (Pin 19) V
INVLC
VB – 1.1 – V
B
Vdc
Logic Input Voltage (Pins 8, 18) V
INL
Vdc
Low 0 – 0.8
High 2.0 – V
CC
Operating Temperature Range T
A
–40 – 85 °C
VB Output Current (VCC = 5.0 V) I
VB
– See
Figure 12
– mA
ELECTRICAL CHARACTERISTICS (T
A
= 25°C, VCC = 5.0 V, CD ≤ 0.8 V, unless noted. See Figure 2.)
Characteristic
Symbol Min Typ Max Unit
POWER SUPPLY
Supply Current (Enabled, CD ≤ 0.8, VB Open) I
CCE
mA
Idle Mode 2.0 3.2 5.0
Tx Mode – 4.2 –
Rx Mode – 4.0 –
Supply Current (Disabled, CD = 2.0 V, VB Open) I
CCD
µA
VCC = 3.0 V – 65 –
VCC = 5.0 V 50 110 170
VCC = 6.5 V – 145 –
VB Output Voltage (IVB = 0, CD = 0) V
B
Vdc
VCC = 2.7 V – 0.9 –
VCC = 5.0 V 2.1 2.2 2.3
VCC = 6.5 V – 3.0 –
VB Output Resistance (IVB ≤ –1.0 mA) R
OVB
– 600 – Ω
PSRR @ VB versus VCC, f = 1.0 kHz, CVB = 100 µF PSRR – 57 – dB
ATTENUATOR CONTROL
CT Voltage (with Respect to VB) VCT – V
B
mV
Rx Mode (VLC = VB) – 150 –
Idle Mode – 0 –
Tx Mode – –100 –
CT Source Current (Switching to Rx Mode) I
CTR
–110 –90 –70 µA
CT Sink Current (Switching to Tx Mode) I
CTT
35 50 65 µA
CT Idle Current I
CTI
–3.0 0 3.0 µA
Dial Tone Detector Threshold (with Respect to VB at RAI) V
DT
–40 –20 –8.0 mV
VLC Input Current @ I
VLC
µA
VLC = V
B
– 0 –
VLC = VB – 1.0 V –8.0 –6.0 –3.0
VLC Input Resistance R
VLC
– 167 – kΩ
MC33219A
3
MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS (T
A
= 25°C, VCC = 5.0 V, CD ≤ 0.8 V, unless noted. See Figure 2.)
Characteristic
Symbol Min Typ Max Unit
ATTENUATORS
Receive Attenuator Gain (f = 1.0 kHz) dB
Full Volume
Rx Mode
G
RX
3.0 6.7 9.0
Tx Mode G
RXT
–49 –46 –43
Idle Mode G
RXI
–28 –25 –22
Range (Rx to Tx Mode) ∆G
RX
50 53 56
Volume Control Range
(Rx Mode Only, VLC Varied from VB to (VB – 1.0 V))
V
CR
34 40 46 dB
AGC Attenuation Range
(VCC = 3.5 to 2.7 V, Receive Mode Only, VLC = VB)
G
AGC
20 26 36 dB
Transmit Attenuator Gain (f = 1.0 kHz) dB
Tx Mode G
TX
3.0 6.7 9.0
Rx Mode G
TXR
–49 –46 –43
Idle Mode G
TXI
–19 –16 –13
Range (Tx to Rx Mode) ∆G
TX
50 53 56
RAO, TAO Output Current Capability
VCC ≥ 3.0 V
VCC < 3.0 V
I
OATT
–
–
2.5
0.7
–
–
mA peak
RAO Offset Voltage with Respect to V
B
V
RAO
mVdc
Rx Mode – 120 –
Idle Mode – 0 –
Tx Mode – –10 –
TAO Offset Voltage with Respect to V
B
V
TAO
mVdc
Rx Mode – 0 –
Idle Mode – –8.0 –
Tx Mode – 70 –
RAI, TAI Input Impedance (Vin < 300 mVrms) R
INATT
– 100 – kΩ
RAI, TAI Input Offset Voltage with Respect to V
B
V
INATT
– 0 – mVdc
MICROPHONE AMPLIFIER (Pins 20, 21)
Output Offset with Respect to VB (RF = 300 kΩ) MCO
VOS
– –9.0 – mVdc
Input Bias Current (Pin 20) I
MBIAS
– –30 – nA
Open Loop Gain (f < 100 Hz) V
VOLM
– 70 – dB
Gain Bandwidth GBW
M
– 1.5 – MHz
Maximum Output Voltage Swing (1% THD) V
OMAX
– 4.1 – Vp–p
Maximum Output Current Capability I
OMCO
– 2.0 – mA peak
Muting (∆ Gain) – RF = 300 kΩ
RF = 100 kΩ
GMT 70
–
78
68
–
–
dB
RECEIVE AMPLIFIER (Pins 16, 17)
Output Offset with Respect to VB (RF = 10 kΩ) RXO
VOS
– –1.0 – mVdc
Input Bias Current (Pin 17) I
RBIAS
– –30 – nA
Open Loop Gain (f < 100 Hz) A
VOLR
– 70 – dB
Gain Bandwidth G
BWR
– 1.5 – MHz
Maximum Output Voltage Swing (1% THD) V
OMAX
– 4.1 – Vp–p
Maximum Output Current Capability I
ORXO
– 2.0 – mA peak
MC33219A
4
MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS
(TA = 25°C, VCC = 5.0 V, CD ≤ 0.8 V, unless noted. See Figure 2)
Characteristic
Symbol Min Typ Max Unit
LEVEL DETECTORS AND BACKGROUND NOISE MONITORS
Tx–Rx Switching Threshold (Pins 4, 11) I
TH
0.8 1.0 1.2 µA
CPR, CPT Output Resistance (for Pulldown) R
CP
– 5.0 – Ω
CPR, CPT Leakage Current I
CPLK
– –0.2 – µA
CPR, CPT Nominal DC Voltage (No Signal) V
CP
– 1.9 – Vdc
TLO, RLO, CP2 Source Current (@ VB – 1.0 V) I
LDOH
– –2.0 – mA
TLO, RLO, CP2 Output Resistance R
LD
– 500 – Ω
TLO, RLO, CP2 Sink Current (@ VB + 1.0 V) I
LDOL
– 2.0 – µA
MUTE INPUT (Pin 18)
Switching Threshold (See Text) V
THMT
– 1.0–1.4 – Vdc
Input Resistance (Vin = 0.85 V) R
MT
70 115 160 kΩ
Input Current (Vin = 5.0 V) I
MT
– 75 – µA
Timing
To Mute
To Enable
t
MT
t
ENM
–
–
1.5
5.0
–
–
µs
CD INPUT (Pin 8)
Switching Threshold V
THCD
– 1.5 – Vdc
Input Resistance (Vin = 0.8 V) R
CD
150 235 350 kΩ
Input Current (Vin = 5.0 V) I
CD
– 40 – µA
Timing
To Disable
To Enable
t
CD
t
ENC
–
–
5.0
See
Figure 22
–
–
µs
SYSTEM DISTORTION (See Figure 1)
Microphone Amplifier + Tx Attenuator Distortion THD
T
– 0.05 3.0 %
Receive Amplifier + Rx Attenuator Distortion THD
R
– 0.05 3.0 %
TYPICAL TEMPERATURE PERFORMANCE
Characteristic –40°C 0°C 25°C 85°C Unit
Power Supply Current
Enabled, VB Open
Disabled, VB Open
3.18
131
3.23
119
3.23
110
3.12
121
mA
µA
VB Output Voltage (IVB = 0) 2.09 2.17 2.22 2.31 Vdc
CT Source Current
Switching to Rx Mode
–80 –87 –90 –90 µA
CT Sink Current
Switching to Tx Mode
43 47 50 51 µA
Attenuator “On” Gain 6.9 6.8 6.7 6.6 dB
Attenuator Range 53 53 53 53 dB
Volume Control Range (Rx Mode Only, VLC Varied from VB to (VB – 1.0 V)) 36 39 40 41 dB
AGC Attenuation Range 32 24 26 30 dB
Temperature data is typical performance only, based on sample characterization, and does not provide guaranteed limits over temperature.
MC33219A
5
MOTOROLA ANALOG IC DEVICE DATA
Figure 1. System Distortion Test
V
out
V
in
3.5 mV
1.0 kHz
V
B
Tx Attenuator
23
TAO
TAI
222120
MCI MCO
3.0 k 300 k
NOTE: Rx Attenuator forced to receive mode.
NOTE: Tx Attenuator forced to transmit mode.
V
out
V
in
350 mV
1.0 kHz
V
B
Rx Attenuator
14
RAO
RAI
151617
RXI RXO
10 k 10 k
MC33219A
6
MOTOROLA ANALOG IC DEVICE DATA
PIN FUNCTION DESCRIPTION
Pin Symbol
Description
1 CP2 A capacitor at this pin stores voltage representing the transmit background noise and speech levels
for the background noise monitor.
2 XDI Input to the transmit background noise monitor.
3 CPT An RC sets the time constant for the transmit background noise monitor.
4 TLI Input to the transmit level detector.
5 TLO Output of the transmit level detector.
6 V
B
A mid–supply reference voltage, and analog ground for the amplifiers. This must be well bypassed for
proper power supply rejection.
7 C
T
An RC sets the switching time between transmit, receive and idle modes.
8 CD Chip Disable (Logic Input). When low, the IC is active. When high, the entire IC is powered down and
non–functional, except for VB. Input impedance is nominally 125 kΩ.
9 NC No internal connection.
10 CPR An RC sets the time constant for the receive background noise monitor.
11 RLI Input to the receive level detector.
12 RLO Output of the receive level detector.
13 GND Ground pin for the entire IC.
14 RAO Output of the receive attenuator.
15 RAI Input to the receive attenuator and the dial tone detector. Input impedance is nominally 100 kΩ.
16 RXO Output of the receive amplifier.
17 RXI Inverting input of the receive amplifier. Bias current flows out of the pin.
18 MUTE Mute Input (Logic Input). A logic low sets normal operation. A logic high mutes the microphone
amplifier only. Input impedance is nominally 67 kΩ.
19 VLC Volume control. When VLC = VB, maximum receive gain is set when in the receive mode. When
VLC = VB – 1.0 V, receive gain is down ≈ 40 dB. No effect in the transmit or idle mode. Current flow is
out of the pin. Input impedance is nominally 167 kΩ.
20 MCI Inverting input of the microphone amplifier. Bias current flows out of the pin.
21 MCO Output of the microphone amplifier.
22 TAI Input of the transmit attenuator. Input impedance is nominally 100 kΩ.
23 TAO Output of the transmit attenuator.
24 V
CC
Power Supply Pin. Operating Range is 2.7 V to 6.5 Vdc. Bypassing is required.
MC33219A
7
MOTOROLA ANALOG IC DEVICE DATA
CPR
Figure 2. MC33219A Block Diagram and Test Circuit
NOTES: 1. All capacitors are in µF unless otherwise noted.
2.Values shown are suggested initial values only. See Applications Information for circuit adjustments.
MC34119
Speaker
Amplifier
Receive Input
From 2–4 Wire
Converter
Rx Attenuator
Attenuator Control Circuit
Tx Attenuator
Bias
AGC
T
x
BNM
Dial Tone
Detector
R
x
BNM
0.15.1 k
R
2
10 k
10 k
0.1
1.0
47
100 k
V
CC
100
15
15 k
1.0
100
V
B
V
B
V
TH
0.1
Volume
Control
(See
Figure 28)
V
B
Normal
Normal
Mute
Mute
Disable
VLC
CD
GND
V
CC
0.47
From
Microphone
Transmit Output
To 2–4 Wire Converter
470.14.7 k
0.1
5.1 k
300 k
1.0
100 k
V
CC
V
B
C
T
TLO
RXI
6
7
5
17
16
RXO
15
RAI
14
RAO
11
RLI
12
RLO
10
13
24
8
19
18
20
2221
TAIMCO
3.0 k
V
B
3
CPT4TLI
2
XDI
23
TAO
1
CP2
Tx–Rx Comp.
MC33219A
V
B
V
B
V
CC
V
B
MCI
R
1
MC33219A
8
MOTOROLA ANALOG IC DEVICE DATA
– 1.4
10
–100
10
VLC VOLTAGE, WITH RESPECT TO VB (V)
ATTENUATOR GAIN (dB)
Figure 3. Attenuator Gain versus VCT (Pin 7)
VCT – VB (mV)
Figure 4. Receive Attenuator versus
Volume Control
RECEIVE ATTENUATOR GAIN (dB)
0– 50
50
150100
–1.2
– 0.8–1.0 0– 0.6
0
–10
– 20
– 30
– 40
0
–10
– 20
– 30
– 40
– 50– 50
Transmit
Attenuator
Receive
Attenuator
Circuit in Receive Mode
– 0.4 – 0.2
VCC ≥ 3.5 V
VCC = 3.3 V
VCC ≤ 2.9 V
2.0 µA
V
out
1.0 µF
500
TLI
RLI
XDI
TLO
RLO
CP2
I
in
Figure 5. Receive Gain versus V
CC
0
200
2.7
10
V
out B
, OUTPUT VOLTAGE (mV)
Figure 6. Level Detector DC Transfer
Characteristics
2.9
3.1 3.5
3.3
–10
– 20
– 30
– 50
– 40
100
– 50
–100
150
RECEIVE ATTENUATOR GAIN (dB)
Iin, DC INPUT CURRENT (µA)
– 40 – 80 – 120 – 160 –200
– V
VCC (V)
Circuit in Receive Mode
0
0
50
V
out B
, OUTPUT VOLTAGE (mV)– V
100
100
0
100
f, FREQUENCY (Hz)Vin, INPUT SIGNAL (mVrms)
Figure 7. Level Detector AC
Transfer Characteristics
Figure 8. Level Detector AC Transfer
Characteristics versus Frequency
300 1.0 k 10 k
20
– 20
60
0
60
20
0
– 60
– 20
–100
R = 5.1 k, C = 0.1 µF
2.0 µA
V
out
1.0 µF
500
TLI
RLI
XDI
TLO
RLO
CP2
V
in
@ 1.0 kHz
40 80 120 160 200
C
R
Vin = 100 mVrms
2.0 µA
V
out
1.0 µF
500
TLI
RLI
XDI
TLO
RLO
CP2
V
in
C
5.1 k
0.1 µF
R = 10 k, C = 0.047 µF
R = 10 k, C = 0.1 µF
V
out B
, OUTPUT VOLTAGE (mV)– V
MC33219A
9
MOTOROLA ANALOG IC DEVICE DATA
INPUT CURRENT ( A)
µ
INPUT VOLTAGE (V)
120
0
60
INPUT CURRENT ( A)
µ
Figure 9. CD Input Characteristics (Pin 8)
INPUT VOLTAGE (V)
Figure 10. Mute Input Characteristics (Pin 18)
40
20
0
80
40
0
1.0 2.0 3.0 4.0 5.0 6.0 0 1.0 2.0 3.0 5.0 7.04.0
Valid for Vin ≤ V
CC
7.0 6.0
Valid for Vin ≤ V
CC
V
B
(V)
0
4.0
0
6.0
IB, OUTPUT CURRENT (mA)
I
CC
(mA)
VCC (V)
Figure 11. Power Supply Current Figure 12. VB Output Characteristics
3.0
2.0
1.0
5.0
3.0
2.0
0
– 0.5 –1.0 –1.51.0 2.0 3.0 4.0 5.0 6.5
1.0
0
4.0
VCC = 5.0 V
VCC = 6.5 V
VCC = 3.0 V
CD ≤ 0.8 V
Idle Mode
CD ≥ 2.0 V
145 µA
–2.0
VCC = 4.0 V
2.5
6.0
200
100
VCC (V)
PSRR (dB)
f, FREQUENCY (Hz)
Figure 13. VB Power Supply Rejection versus
Frequency and VB Capacitor
Figure 14. Receive Amp and
Microphone Amp Output Swing
80
60
20
0
4.0
2.0
0
1.0 k 10 k 20 k 3.5 4.5 5.5 6.5
P–P OUTPUT SWING (V)
40
CVB = 1000 µF
CVB = 33
µ
F
CVB = 100 µF
THD ≤ 1.0%THD = 5.0 %
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