TLV320AIC1106PW [TI]
PCM CODEC; PCM编解码器
| 型号： | TLV320AIC1106PW |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | PCM CODEC |
| 文件： | 总17页 (文件大小：222K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TLV320AIC1106
SLAS357 – DECEMBER 2001
PCM CODEC
FEATURES
APPLICATIONS
D
Designed for Analog and Digital Wireless
Handsets, Voice-Enabled Terminals, and
Telecommunications Applications
D
D
D
D
D
Digital Handset
Digital Headset
Cordless Phones
Digital PABX
D
D
2.7-V to 3.3-V Operation
Selectable 13-Bit Linear or 8-Bit µ-Law
Companded Conversion
Digital Voice Recording
D
D
Differential Microphone Input With External
Gain Setting
DESCRIPTION
The TLV320AIC1106 PCM codec is designed to
perform transmit encoding analog-to-digital (A/D)
conversion, receive decoding digital-to-analog (D/A)
conversion, and transmit and receive filtering for
Differential Earphone Output Capable of
Driving a 32-Ω to 8-Ω Load
D
D
Programmable Volume Control in Linear Mode
voice-band
communications
systems.
The
Microphone (MIC) and Earphone (EAR) Mute
Functions
TLV320AIC1106 device operates in either the 13-bit
linear or 8-bit companded (µ-law) mode. The PCM
codec generates its own internal clocks from a
2.048-MHz master clock input.
PW PACKAGE
D
Typical Power Dissipation of 0.03 mW in
Power-Down Mode
D
D
D
2.048-MHz Master Clock Rate
(TOP VIEW)
300-Hz to 3.4-kHz Passband
Low Profile 20-Terminal TSSOP Packaging
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
MICMUTE
RESET
EARMUTE
MCLK
PCMSYNC
PCMO
PCMI
DVSS
VSS
EARVSS
EAROUT+
EARVDD
EAROUT–
EARVSS
MICGAIN+
MICIN–
DVDD
LINSEL
MICGAIN–
MICIN+
This device contains circuits to protect its inputs and outputs against damage due to high static voltages or electrostatic fields. These
circuits have been qualified to protect this device against electrostatic discharges (ESD) of up to 2 kV according to MIL-STD-883C,
Method 3015; however, it is advised that precautions be taken to avoid application of any voltage higher than maximum-rated
voltages to these high-impedance circuits. During storage or handling, the device leads should be shorted together or the device
should be placed in conductive foam. In a circuit, unused inputs should always be connected to an appropriated logic voltage level,
preferably either V
or ground. Specific guidelines for handling devices of this type are contained in the publication Guidelines for
CC
Handling Electrostatic-Discharge-Sensitive (ESDS) Devices and Assemblies available from Texas Instruments.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright 2001, Texas Instruments Incorporated
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TLV320AIC1106
SLAS357 – DECEMBER 2001
functional block diagram
(16)
PCMI
(18)
PCMSYNC
(17)
PCMO
(19)
RX
Volume
Control
MCLK
PLL
TX
Filter
PCM
Interface
(12)
MICGAIN –
MIC Amp 1
(5)
(11)
Digital
Modulator
and Filter
EAROUT+
EAROUT–
MICIN +
MICIN –
+
–
Analog
Modulator
RX
Filter
EAR
AMP
MIC
Amp 2
(7)
(10)
(9)
MICGAIN +
(20)
(1)
EARMUTE
MICMUTE
(2)
RESET
LINSEL
(13)
(6)
EARVDD
Power
and
Reset
(8) (4)
EARVSS
VSS
(3)
(15)
(14)
DVSS
DVDD
RX = Receive
TX = Transmit
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TLV320AIC1106
SLAS357 – DECEMBER 2001
detailed description
power up/reset
An external reset must be applied to the active-low RESET terminal while MCLK is active to ensure reset at
power up.
reference
A precision band-gap reference voltage is generated internally and supplies all required references to operate
the transmit and receive channels.
phase-locked loop
The phase-locked loop generates the internal clock frequency required for internal digital filters and modulators
by phase-locking to 2.048-MHz master clock input.
PCM interface
The PCM interface transmits and receives data at the PCMO and PCMI terminals, respectively. The data is
transmitted or received at the MCLK speed once on each PCMSYN cycle. The PCMSYN can be driven by an
external source that is derived from the master clock and used as an interrupt to the host controller.
microphone input
The microphone input circuit consists of two differential input/differential output amplifiers (MIC Amp 1 and
MIC Amp 2). MIC Amp 1 is a low-noise differential amplifier capable of an externally set gain. MIC Amp 2 is a
differential amplifier with a fixed gain of 6 dB.
analog modulator
The transmit channel modulator is a third-order sigma-delta design.
transmit filter
The transmit filter is a digital filter designed to meet Consultive Committee on International Telegraphy and
Telephony (CCITT) G.714 requirements. The TLV320AIC1106 device operates in either the 13-bit linear or 8-bit
companded µ-law mode.
receive filter
The receive (RX) filter is a digital filter that meets CCITT G.714 requirements. The TLV320AIC1106 device
operates in either the 13-bit linear or 8-bit µ-law companded mode, which is selected at the LINSEL input.
receive volume control
In linear mode, the three least significant bits of the 16-bit PCMI data sample is used to control volume. The
volume range is –18 dB to 3 dB in 3-dB steps.
digital modulator and filter
Thesecond-orderdigitalmodulatorandfilterconvertthereceiveddigitalPCMdatatotheanalogoutputrequired
by the earphone interface.
earphone amplifiers
EAROUT is recommended for use as a differential output; however, it can be connected in single-ended
topology as well. Clicks and pops are suppressed from the differential output.
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TLV320AIC1106
SLAS357 – DECEMBER 2001
Terminal Functions
TERMINAL
I/O
DESCRIPTION
TERMINAL
EARVSS
NO.
4
I
I
Analog ground for EAROUT+
DVDD
14
15
20
7
Digital positive power supply
Digital negative power supply
Earphone mute
DVSS
I
EARMUTE
EAROUT–
EAROUT+
EARVDD
EARVSS
LINSEL
MCLK
I
O
O
I
Earphone amplifier negative output
Earphone amplifier positive output
5
6
Analog positive power supply for the earphone amplifiers
Analog ground for EAROUT–
Companding enable
8
I
13
19
9
I
I
Master system clock input (2.048 MHz) (digital)
Microphone gain positive feedback
Microphone gain negative feedback
Microphone mute
MICGAIN+
MICGAIN–
MICMUTE
MICIN–
I
12
1
I
I
10
11
16
17
18
2
I
Microphone negative input (–)
Microphone positive input (+)
Receive PCM input
MICIN+
PCMI
I
I
PCMO
O
I
Transmit PCM output
PCMSYNC
RESET
PCM frame synchronization
I
Active-low reset
VSS
3
I
Ground return for band-gap internal reference
†
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, DVDD, EARVDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 3.6 V
Output voltage range, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 3.6 V
O
Input voltage range, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 3.6 V
I
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free air temperature range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to 85°C
A
Storage temperature range, T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
stg
Lead temperature 1,6 mm from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
DISSIPATION RATING TABLE
T
≤ 25°C
DERATING FACTOR
T = 85°C
A
POWER RATING
A
PACKAGE
POWER RATING
ABOVE T = 25°C
A
PW
680 W
6.8 W/°C
270 W
4
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TLV320AIC1106
SLAS357 – DECEMBER 2001
recommended operating conditions (see Note 2)
MIN
NOM
MAX
UNIT
V
Supply voltage, DVDD, EARVDD
2.7
3.3
High-level input voltage, V
IH
0.7xV
V
DD
Low-level input voltage, V
0.3xV
V
IL
DD
DD
Load impedance between EAROUT+ and EAROUT–, R
8 to 32
Ω
L
Input voltage, MICIN
0.9xV
85
V
Operating free-air temperature, T
–40
_C
A
NOTES: 1. To avoid possible damage and resulting reliability problems to these CMOS devices, follow the power-on initialization paragraph,
described in the Principles of Operations.
2. Voltages are with respect to DVSS, and EARVSS.
electrical characteristics over recommended ranges of supply voltage and operating free-air temperature
(unless otherwise noted)
supply current
PARAMETER
TEST CONDITIONS
MIN
TYP
5
MAX
7
UNIT
mA
µA
Operating
I
t
Supply current from V
DD
DD
Power down, MCLK not present
10
30
Power-up time from power down
10
ms
pu
digital interface
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V
V
V
High-level output voltage, PCMO
Low-level output voltage, PCMO
High-level input current, any digital input
Low-level input current, any digital input
Input capacitance
I
I
= –3.2 mA,
V
= 3 V
= 3 V
DVDD–0.25
OH
OH
DD
DD
= 3.2 mA,
V
0.2
10
10
10
20
V
OL
OL
I
I
V = 2.2 V to V
DD
µA
µA
pF
pF
IH
I
V = 0 to 0.8 V
IL
I
C
C
I
Output capacitance
o
microphone interface
PARAMETER
Input offset voltage
TEST CONDITIONS
See Note 3
MIN
–5
TYP
MAX
5
UNIT
mV
nA
V
IO
I
IB
Input bias current
Input capacitance
–250
250
C
5
pF
i
MIC Amp 1 gain = 23.5 dB,
See Note 4
V
n
Microphone input referred noise, psophometric weighted
2.9
4
µV
rms
MICMUTE
–80
dB
NOTES: 3. Measured while MICIN+ and MICIN– are connected together. Less than a 0.5-mV offset results in 0 value code on PCMOUT.
4. Configured as shown in Figure 3.
5
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TLV320AIC1106
SLAS357 – DECEMBER 2001
electrical characteristics over recommended ranges of supply voltage and operating free-air temperature
(unless otherwise noted) (continued)
speaker interface
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V
DD
= 2.7 V, fully differential, 8-Ω load,
3-dBm0 output, volume control = –3 dB,
PCMI data input to –4 dB level
161
200
V
= 2.7 V, fully differential, 16-Ω load,
DD
3-dBm0 output, volume control = –3 dB,
PCMI data input to –2 dB level
128
81
160
100
Earphone AMP output power (see Note 5)
mW
V
= 2.7 V, fully differential, 32-Ω load,
DD
3-dBm0 output, volume control = –3 dB,
PCMI data input to –1 dB level
3-dBm0 input, 8-Ω load
3-dBm0 input, 16-Ω load
3-dBm0 input, 32-Ω load
141
90
178
112
63
I
O
max
Maximum output current for EAROUT (rms)
EARMUTE
mA
dB
50
–80
NOTE 5: Maximum power is with a load impedance of –20%, at 25°C.
transmit gain and dynamic range, companded mode (µ-law) or linear mode selected (see Notes 6 and 7)
PARAMETER
Transmit reference-signal level (0dB)
Overload-signal level (3 dBm0)
Absolute gain error
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Differential, MIC Amp 1 configured for 23.5 dB gain
Differential, MIC Amp 1 configured for 23.5 dB gain
88 mV
pp
pp
124 mV
0 dBm0 input signal, 2.7 V ≤ V
≤ 3.3 V
–1
–0.5
–1
1
0.5
1
dB
DD
MICIN–, MICIN+ to PCMO at 3 dBm0 to –30 dBm0
MICIN–, MICIN+ to PCMO at –31 dBm0 to –45 dBm0
MICIN–, MICIN+ to PCMO at –46 dBm0 to –55 dBm0
Gain error with input level relative to gain at
–10 dBm0 MICIN, MICIN+ to PCMO
dB
–1.2
1.2
NOTES: 6. Unlessotherwisenoted,theanaloginputis0dB,1020-Hzsinewave,where0dBisdefinedasthezero-referencepointofthechannel
under test.
7. The reference signal level, which is input to the transmit channel, is defined as a value 3 dB below the full-scale value of 124-mV
.
pp
transmit filter transfer, companded mode (µ-law) or linear mode selected
PARAMETER
TEST CONDITIONS
< 100 Hz
MIN
–0.5
–0.5
–0.5
–1.5
TYP
MAX
0.5
UNIT
f
f
f
f
f
f
f
MIC
MIC
MIC
MIC
MIC
MIC
MIC
= 200 Hz
0.5
= 300 Hz to 3 kHz
= 3.4 kHz
0.5
0
Gain relative to input signal gain at 1.02 kHz
dB
= 4 kHz
–14
–35
–47
= 4.6 kHz
= 8 kHz
6
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TLV320AIC1106
SLAS357 – DECEMBER 2001
electrical characteristics over recommended ranges of supply voltage and operating free-air temperature
(unless otherwise noted) (continued)
transmit idle channel noise and distortion, companded mode (µ-law) selected
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
MIC Amp 1 configured for 23.5-dB gain
(see Note 8)
Transmit idle channel noise, psophometrically weighted
–80
–70 dBm0
p
MICIN–, MICIN+ to PCMO at 3 dBm0
MICIN–, MICIN+ to PCMO at 0 dBm0
MICIN–, MICIN+ to PCMO at –5 dBm0
MICIN–, MICIN+ to PCMO at –10 dBm0
MICIN–, MICIN+ to PCMO at –20 dBm0
MICIN–, MICIN+ to PCMO at –30 dBm0
MICIN–, MICIN+ to PCMO at –40 dBm0
MICIN–, MICIN+ to PCMO at –45 dBm0
CCITT G.712 (7.1), R2
27
30
33
36
35
26
24
19
49
51
Transmit signal-to-distortion ratio with 1.02-kHz sine-wave
input
dBm0
Intermodulation distortion, 2-tone CCITT method, composite
power level, –13 dBm0
dB
CCITT G.712 (7.2), R2
NOTE 8: With recommended impedances and resistor tolerance of 1%
transmit idle channel noise and distortion, linear mode selected
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
MIC Amp 1 configured for 23.5-dB gain
(see Note 8)
Transmit idle channel noise, psophometrically weighted
–80
–74 dBm0
p
MICIN–, MICIN+ to PCMO at 3 dBm0
MICIN–, MICIN+ to PCMO at 0 dBm0
MICIN–, MICIN+ to PCMO at –5 dBm0
MICIN–, MICIN+ to PCMO at –10 dBm0
MICIN–, MICIN+ to PCMO at –20 dBm0
MICIN–, MICIN+ to PCMO at –30 dBm0
MICIN–, MICIN+ to PCMO at –40 dBm0
MICIN–, MICIN+ to PCMO at –45 dBm0
40
50
52
56
52
51
43
38
55
61
62
66
68
61
59
55
Transmit signal-to-total distortion ratio with 1.02-kHz
sine-wave input
dB
NOTE 8: With recommended impedances and resistor tolerance of 1%
receive gain and dynamic range, linear or companded (µ-law) mode selected (see Note 9)
PARAMETER
TEST CONDITIONS
MIN
TYP
3.2
MAX
UNIT
Load = 8 Ω, volume control = –3 dB, PCMI data input to –4 dB level
Load = 16 Ω, volume control = –3 dB, PCMI data input to –2 dB level
Load = 32 Ω, volume control = –3 dB, PCMI data input to –1 dB level
4.05
4.54
Overload-signal level (3 dB)
Absolute gain error
V
pp
0 dBm0 input signal, 2.7 V ≤ V
≤ 3.3 V
–1
–0.5
–1
1
0.5
1
dB
dB
DD
PCMI to EAROUT–, EAROUT+ at 3 dBm0 to –40 dBm0
PCMI to EAROUT–, EAROUT+ at –41 dBm0 to –50 dBm0
PCMI to EAROUT–, EAROUT+ at –51 dBm0 to –55 dBm0
Gain error with output level
relative to gain at –10 dBm0
–1.2
1.2
NOTE 9: 1020-Hz input signal at PCMI, output measured differentially between EAROUT– and EAROUT+
7
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TLV320AIC1106
SLAS357 – DECEMBER 2001
electrical characteristics over recommended ranges of supply voltage and operating free-air temperature
(unless otherwise noted) (continued)
receive filter transfer, companded mode (µ-law) or linear mode selected (MCLK = 2.048 MHz) (see Note 10)
PARAMETER
TEST CONDITIONS
< 100 Hz
MIN
TYP
MAX
–15
–5
UNIT
f
f
f
f
f
f
f
EAROUT
EAROUT
EAROUT
EAROUT
EAROUT
EAROUT
EAROUT
= 200 Hz
= 300 Hz to 3 kHz
= 3.4 kHz
= 4 kHz
–0.5
–1.5
0.5
0
Gain relative to input signal gain at 1.02-kHz
dB
–14
–35
–47
= 4.6 kHz
= 8 kHz
NOTE 10: Volume control = –3 dB, PCMI data input to –1 dB level (32-Ω load)
receive idle channel noise and distortion, companded mode (µ-law) selected (see Note 10)
PARAMETER
TEST CONDITIONS
PCMI = 11111111 (µ-law)
MIN
TYP
MAX
UNIT
Receive noise, C-message weighted
–90
–88 dBm0
PCMI to EAROUT–, EAROUT+ at 3 dBm0
PCMI to EAROUT–, EAROUT+ at 0 dBm0
PCMI to EAROUT–, EAROUT+ at –5 dBm0
PCMI to EAROUT–, EAROUT+ at –10 dBm0
PCMI to EAROUT–, EAROUT+ at –20 dBm0
PCMI to EAROUT–, EAROUT+ at –30 dBm0
PCMI to EAROUT–, EAROUT+ at –40 dBm0
PCMI to EAROUT–, EAROUT+ at –45 dBm0
21
25
36
43
40
38
28
23
Receive signal-to-distortion ratio with 1.02-kHz
sine-wave input
dB
NOTE 10: Volume control = –3 dB, PCMI data input to –1 dB level (32-Ω load)
receive idle channel noise and distortion, linear mode selected (see Note 10)
PARAMETER
TEST CONDITIONS
PCMI = 0000000000000
MIN
TYP
–83
52
MAX
UNIT
Receive noise, (20-Hz to 20-kHz brickwall window)
–78 dBm0
PCMI to EAROUT–, EAROUT+ at 3 dBm0
PCMI to EAROUT–, EAROUT+ at 0 dBm0
PCMI to EAROUT–, EAROUT+ at –5 dBm0
PCMI to EAROUT–, EAROUT+ at –10 dBm0
PCMI to EAROUT–, EAROUT+ at –20 dBm0
PCMI to EAROUT–, EAROUT+ at –30 dBm0
PCMI to EAROUT–, EAROUT+ at –40 dBm0
PCMI to EAROUT–, EAROUT+ at –45 dBm0
CCITT G.712 (7.1), R2
48
51
57
55
51
45
42
35
50
54
56
59
62
Receive signal-to-distortion ratio with 1.02-kHz
sine-wave input (0–4 kHz)
dB
53
47
47
45
Intermodulation distortion, 2-tone CCITT method,
composite power level, –13 dBm0
dB
CCITT G.712 (7.2), R2
NOTE 10: Volume control = –3 dB, PCMI data input to –1 dB level (32-Ω load)
8
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TLV320AIC1106
SLAS357 – DECEMBER 2001
electrical characteristics over recommended ranges of supply voltage and operating free-air temperature
(unless otherwise noted) (continued)
power supply rejection
PARAMETER
TEST CONDITIONS
MICIN–, MICIN+ = 0 V, = 2.7 V + 100 mV
f = 1 kHz, Resistor tolerance of 1%
PCM code = positive zero, V = 2.7 V + 100 mV
MIN
TYP
MAX
UNIT
V
DD
pp,
Supply voltage rejection, transmit channel
–74
–50
dB
Supply voltage rejection, receive channel
(differential)
,
pp
DD
f = 1 kHz, Resistor tolerance of 1%
–80
–65
dB
crosstalk attenuation, linear mode selected
PARAMETER
TEST CONDITIONS
MIN
70
TYP
MAX
UNIT
dB
Crosstalk attenuation, transmit-to-receive
(differential)
MICIN–, MICIN+ = 0 dB, f = 300 Hz to 3400 Hz measured
differentially between EAROUT– and EAROUT+
Crosstalk attenuation, receive-to-transmit
PCMI = 0 dBm0, f = 300 Hz to 3400 Hz measured at PCMO
70
dB
timing requirements
clock
MIN NOM
2.048
MAX
UNIT
ns
t
f
Transition time, MCLK
MCLK frequency
MCLK jitter
10
t
MHz
mclk
37%
MCLK clock cycles per PCMSYN frame
256
256 cycles
transmit (see Figure 1)
MIN
MAX
UNIT
t
t
Setup time, PCMSYN high before MCLK ↓
Hold time, PCMSYN high after MCLK ↓
20
t
t
–20
–20
ns
su(PCMSYN)
c(MCLK)
20
h(PCMSYN)
c(MCLK)
receive (see Figure 2)
MIN
20
MAX
UNIT
ns
t
t
t
t
Setup time, PCMSYN high before MCLK ↓
Hold time, PCMSYN high after MCLK ↓
Setup time, PCMI high or low before MCLK ↓
Hold time, PCMI high or low after MCLK ↓
t
t
–20
–20
su(PCSYN)
h(PCSYN)
su(PCMI)
h(PCMI)
c(MCLK)
20
ns
c(MCLK)
20
ns
20
ns
switching characteristics over recommended operating conditions, C max = 10 pF (see Figure 1)
L
MIN
MAX
35
UNIT
ns
t
t
t
Propagation delay time, MCLK bit 1 high to PCMO bit 1 valid
Propagation delay time, MCLK high to PCMO valid, bits 2 to n
Propagation delay time, MCLK bit n low to PCMO bit n Hi-Z
pd1
pd2
pd3
35
ns
30
ns
9
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TLV320AIC1106
SLAS357 – DECEMBER 2001
PARAMETER MEASUREMENT INFORMATION
Transmit Time Slot
0
1
2
3
4
N–2
N–1
N
N+1
80%
80%
MCLK
20%
20%
t
su(PCMSYN)
t
h(PCMSYN)
PCMSYN
See Note B
t
See Note A
PCMO
pd2
t
pd3
1
2
3
4
N–2
N–1
N
See Note C
t
pd1
t
See Note D
su(PCMO)
NOTES: A. This window is allowed for PCMSYN high.
B. This window is allowed for PCMSYN low (t
C. Transitions are measured at 50%.
max determined by data collision considerations).
h(PCMSYN)
D. Bit 1 = Most significant bit (MSB), Bit N = Least significant bit (LSB)
Figure 1. Transmit Timing Diagram
Receive Time Slot
4
0
1
2
3
N –2
N –1
N
N +1
80%
80%
MCLK
t
20%
20%
t
su(PCMSYN)
h(PCMSYN)
PCMSYN
See Note B
4
See Note A
See Note D
2
t
h(PCMI)
1
3
N –2
N –1
N
PCMI
See Note C
t
su(PCMI)
NOTES: A. This window is allowed for PCMSYN high.
B. This window is allowed for PCMSYN low.
C. Transitions are measured at 50%.
D. Bit 1 = Most significant bit (MSB), Bit N = Least significant bit (LSB)
Figure 2. Receive Timing Diagram
10
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TLV320AIC1106
SLAS357 – DECEMBER 2001
PRINCIPLES OF OPERATION
power-up initialization
An external reset with a minimum pulse width of 500 ns must be applied to the active-low RESET terminal with
MCLK active to ensure reset upon power up.
Table 1. Power-Up and Power-Down Power Consumption
(V
= 2.7 V, Earphone Amplifier Loaded)
DD
DEVICE STATUS
Power up
MAXIMUM POWER CONSUMPTION
16.2 mW
Power down
81 µW
The loss of MCLK (no transition detected) automatically enters the device into a power-down state with PCMO
in the high-impedance state. If an asynchronous power down occurs during a pulse code modulation (PCM)
data transmit cycle, the PCM interface remains powered up until the PCM data is completely transferred.
conversion laws
The device can be programmed either for a 13-bit linear or 8-bit (µ-law) companding mode. The companding
operation approximates the CCITT G.711 recommendation. The linear mode operation uses a 13-bit twos
complement format. Linear mode is selected with LINSEL low. LINSEL is high for companding.
transmit operation
microphone input
The microphone input stage is a low-noise differential amplifier. The microphone must be capacitively coupled
to the MICIN– and MICIN+ terminals. Preamplifier (MIC Amp 1) gain is determined by selection of external
resistors R2 and R3. To achieve the recommended gain setting of 23.5 dB for MIC Amp 1, resistor values of
R2 = 34 kΩ and R3 = 510 kΩ are suggested. A 1% tolerance is recommended for all resistors to meet the
specification. The recommended range for R2 is 34–100 kΩ. For values above 100 kΩ, the noise performance
of the channel is degraded.
+V
R3
MICGAIN–
R1
C1
C1
R2
R2
MICIN+
+
_
MIC Amp 1
MICIN–
R1
MICGAIN+
R3
R1 = 2 kΩ
C1 = 0.22 µF
R3
MIC Amp 1 Gain in dB + 20 log ǒ Ǔ
R2
Figure 3. Typical Microphone Interface
11
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TLV320AIC1106
SLAS357 – DECEMBER 2001
PRINCIPLES OF OPERATION
microphone mute function
Transmit channel muting can be selected by setting MICMUTE high. Muting provides 80-dB attenuation of the
input microphone signal.
receive operation
earphone amplifier
The analog signal is routed to the earphone amplifier differential output (EAROUT– or EAROUT+), which is
capable of driving a load as low as 8 Ω. EAROUT is recommended for use as a differential output.
earphone mute function
Receive channel muting can be selected by setting the EARMUTE terminal to high.
receive PCM data format
D
D
Companded mode: 8 bits are received, the MSB first
Linear mode: 13 bits are received, the MSB first
Table 2. Receive Data Bit Definitions
BIT NO.
COMPANDED
MODE
LINEAR
MODE
1
2
CD7
CD6
CD5
CD4
CD3
CD2
CD1
CD0
–
LD12
LD11
LD10
LD9
3
4
5
LD8
6
LD7
7
LD6
8
LD5
9
LD4
10
11
12
13
14
15
16
–
LD3
–
LD2
–
LD1
–
LD0
–
RXVOL2
RXVOL1
RXVOL0
–
–
12
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TLV320AIC1106
SLAS357 – DECEMBER 2001
PRINCIPLES OF OPERATION
receive volume control
In linear mode, RXVOL [2:0] PCM data bits are used for volume control according to Table 3. Volume control
bits must be sent on PCMI for each 13-bit receive word. In companded mode, volume control is fixed at 0 dB.
Table 3. Volume Control Bit Definition in Linear Mode
RXVOL [2:0]
000
GAIN SETTING
3 dB
001
0 dB
010
–3 dB
011
–6 dB
100
–9 dB
101
–12 dB
–15 dB
–18 dB
110
111
support section
The clock generator and control circuit uses the master clock input (MCLK) to generate internal clocks to drive
internal counters, filters, and converters.
clock frequencies and sample rates
A fixed PCMSYN rate of 8 kHz determines the sampling rate. The PCMSYN signal must be derived from the
master clock. The divide ratio must be set to 256 for the device to work properly.
13
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TLV320AIC1106
SLAS357 – DECEMBER 2001
TYPICAL CHARACTERISTICS
RELATIVE GAIN
vs
RELATIVE GAIN
vs
FREQUENCY
FREQUENCY
20
0
10
0
–20
–40
–10
–20
–30
See Note B
See Note A
–60
–80
–40
–100
–120
–50
–60
0
1
2
3
4
5
6
0
1
2
3
4
5
6
f – Frequency – kHz
f – Frequency – kHz
Figure 4
Figure 5
NOTES: A. Transmit channel frequency response shown relative to the gain at a 1.02-kHz input signal in linear mode.
B. Receive channel frequency response shown relative to the gain at a 1.02-kHz input signal in linear mode.
RELATIVE GAIN
vs
RELATIVE GAIN
vs
FREQUENCY
FREQUENCY
20
0
10
0
–20
–40
–60
–10
–20
–30
See Note A
See Note B
–80
–40
–100
–120
–50
–60
0
1
2
3
4
5
6
0
1
2
3
4
5
6
f – Frequency – kHz
f – Frequency – kHz
Figure 6
Figure 7
NOTES: A. Transmit channel frequency response shown relative to the gain at a 1.02-kHz input signal in µ-Law mode.
B. Receive channel frequency response shown relative to the gain at a 1.02-kHz input signal in µ-Law mode.
14
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TLV320AIC1106
SLAS357 – DECEMBER 2001
TYPICAL CHARACTERISTICS
SUPPLY CURRENT
SUPPLY CURRENT
vs
vs
SUPPLY VOLTAGE
SUPPLY VOLTAGE
10
8
20
16
See Note A
See Note B
6
12
8
4
2
0
4
0
2.5
3
3.5
2.5
3
3.5
Supply Voltage – V
Supply Voltage – V
Figure 8
Figure 9
NOTES: A. Supply current as a function of supply voltage in power-up mode.
B. Supply current as a function of supply voltage in power-down mode.
15
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TLV320AIC1106
SLAS357 – DECEMBER 2001
MECHANICAL DATA
PW (R-PDSO-G**)
PLASTIC SMALL-OUTLINE PACKAGE
14 PINS SHOWN
0,30
0,19
M
0,10
0,65
14
8
0,15 NOM
4,50
4,30
6,60
6,20
Gage Plane
0,25
1
7
0°–ā8°
A
0,75
0,50
Seating Plane
0,10
0,15
0,05
1,20 MAX
PINS **
8
14
16
20
24
28
DIM
3,10
2,90
5,10
4,90
5,10
4,90
6,60
6,40
7,90
9,80
9,60
A MAX
A MIN
7,70
4040064/F 01/97
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
D. Falls within JEDEC MO-153
16
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Copyright 2001, Texas Instruments Incorporated
相关型号：
TLV320AIC1107PWR
PCM CODEC (A-Law) with Microphone & 8-ohm Speaker Amplifiers 20-TSSOP -40 to 85
TI
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