The AIC111 IC design specification serves to provide
product development teams with a guideline for how the
AIC1 11 IC is specified and programmable options that are
available. The document outlines a top-level block
description of the IC along with system specifications and
functions. Individual block descriptions and target
specifications are also outlined.
The Texas Instruments AIC111 is a TI µPower DSP
compatible, or microcontroller compatible audio codec
product, or analog interface circuit. The AIC111 is part of
a comprehensive family of DSP/µC based highperformance analog interface solutions. The AIC111 is
targeted primarily at personal medical devices, such as
hearing instruments, aural preprocessing applications,
and low-power headset applications. The AIC111 is used
in any design requiring a programmable time constant
PGA/compressor interface, high dynamic range
analog-to-digital converter, an external DSP/µC
handling signal processing, or a low distortion
digital-to-analog converter with a balanced H-Bridge
speaker driver. It supports a CMOS digital interface
tailored for TI DSPs with the McBSP protocol such as
TMS320VC54x DSP family and SPI-based controllers
such as TI MSP430x family of microcontrollers. The
AIC111 also has an external microphone or sensor supply
and bias and power supply up low-battery monitor
indicator.
semiconductor products and disclaimers thereto appears at the end of this data sheet.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during
storage or handling to prevent electrostatic damage to the MOS gates.
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The AIC1 11 comes in a 32-pin QFN 5×5-mm package. A 32-pad solder ball bumped flip chip die that comes in waffle
packs or tape and reel is in preview and will be available 3rd quarter 2003.
AVAILABLE OPTIONS
PART NUMBERPACKAGE
AIC111RHB32-pin QFN (5 mm x 5 mm), in tube.
AIC111RHBR32-pin QFN (5 mm x 5 mm), tape and reel
AIC111YE
AIC111YER
32-pad waffle scale chip package, bumped die in waffle pack (contact the factory for availability) − Preview,
available 3rd quarter 2003
32-pad (WSCP) bumped die in tape and reel (contact the factory for availability) − Preview, available 3rd
quarter 2003
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted
Input voltageAI or DI pins−0.3 V to 4 V
Power supplyVDD, power pins−0.3 V to 4.5 V
Latch-up toleranceJEDEC latch-up (EIA/JEDS78)100 mA
Operating free-air temperature range, T
Functional temperature range−15°C to 85°C
Reflow temperature range (flip chip)220°C to 230°C
Storage temperature range, T
Storage humidity65% R.H.
(1)
Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only , a n d
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.
(2)
Specifications are assured operating at maximum device limits for QFN package only, unless otherwise specified.
stg
A
(1)(2)
UNIT
0°C to 70°C
−40°C to 125°C
ELECTRICAL CHARACTERISTICS
INPUT/OUTPUT, OPERATING TEMPERATURE AT 2 5 °C
PARAMETERTEST CONDITIONMINTYPMAXUNIT
Digital interface (see Notes 1 and 2)BUF_DVDD (see Note 1)3.6V
VIH High-level input voltageBUF_DVDD−0.2V
VIL Low-level input voltageBUF_DVSS+0.2V
VOH High-level output voltageBUF_DVDDV
VOL Low-level output voltageBUF_DVSSV
Maximum allowed input voltage (AVIN)Differential450mVpk
Input impedance (AVIN) (see Note 3)Nominal gain = 50x20kΩ
Input capacitance (AVIN)5pF
Microphone bias voltage (MIC_VSUP)20-µA maximum0.870.940.99V
Microphone bias resistor (MIC_BIAS)2729.131kΩ
Fixed Q3/4 HB_VDD
Adaptive QHB_VDD
Output resistanceDifferential, HB − VDD = 1.3 V20 or 40Ω
(1)
DVDD, VDD_OSC, and AVDD should be within 50 mV, preferably connected together.
AVSS1, 2, DVSS, and VSS_OSC should be within 50 mV, preferably connected together.
(2)
Maximum (0.9 V , DVDD −0.5 V) ≤ BUF_DVDD ≤3.6 V
(3)
Driving single-ended: Rin = R × [(1+A)/(2+A)], A = PGAC Gain (linear), R = 20.4 kΩ for A ≥ 4 or 20.4 kΩ × (4/A) for A<4.
Rin(min) = 1 7 k Ω (A=4), Rin(max) = 59.89 kΩ (A = 0.89), Rin(nom) = 20 kΩ (A = 50).
PP
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TERMINAL ASSIGNMENTS
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AVSS1
AVSS2
AVINP
AVINM
VMID_FILT
MIC_BIAS
VREF
MIC_VSUP
Alignment
Marker
(0,0)
MIC_VSUP
VREF
MIC_BIAS
VMID_FILT
AVINM
AVINP
AVSS2
AVSS1
AVSS_REF
1
2
3
4
5
6
7
8
91011121314
SUB_VSS
SUB_VSS
91011121314
8
7
6
5
4
3
2
1
AVSS_REF
VRFILT
AVDD
3132
AIC111
Bumped Side
VDD_OSC
VDD_OSC
VSS_OSC
Back Side
AIC111
3132
VRFILT
AVDD
EXT_RST/PWDN
RST/LBM
28
2930
27
VOUT_P
VSS_OSC
HB_VSS_P
HB_VSS_P
HB_VDD
VOUT_P
27
28
2930
DVSS2
RST/LBM
EXT_RST/PWDN
DVSS2
26
16
15
HB_VDD
VOUT_M
HB_VSS_M
VOUT_M
16
15
26
SCLK
SCLK
FRAME
25
24
SDIN
SDOUT
23
22
BUF_DVSS
21
BUF_DVDD
20
DVDD
DVSS1
19
18
MCLK
17
IMODE
Bumped View
HB_VSS_M
For exact bump
location see Spec.
IMODE
17
18
MCLK
19
DVSS1
20
DVDD
21
BUF_DVDD
22
BUF_DVSS
23
SDOUT
24
SDIN
25
FRAME
PCB View
Section 2.2
Figure 1. AIC111YE Bumped View and PCB Flipped Pin Placements
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AVSS1
AVSS2
AVINP
AVINM
VMID_FILT
MIC_BIAS
VREF_BG
MIC_VSUP
AVSS_REF
1
2
3
4
5
6
7
8
9 10111213141516
VRFILT
AVDD
DVSS
29303132
RST/LBM
28
DVSS
SCLK
AIC111RHB
FRAME
252627
24
23
22
21
20
19
18
17
SDIN
SDOUT
BUF_DVSS
BUF_DVDD
DVDD
DVSS
MCLK
IMODE
SUB_VSS
VDD_OSC
VSS_OSC
HB_VSS_P
VOUT_P
HB_VDD
Figure 2. AIC111RHB 32-Pin QFN Pinout
VOUT_M
HB_VSS_M
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TYPE
DESCRIPTION
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Terminal Functions
TERMINAL
NO.NAME
1AVSS1GNDGround return for ADC analog circuits
2AVSS2GNDGround return for PGAC and MIC power analog circuits
3AVINPAINoninverting differential analog input coupled through an external 1-µF capacitor to external microphone
output
4AVINMAIInverting d i fferential analog signal input coupled through an external 1-µF capacitor to ground
5VMID_FILTAOMidsupply ac ground reference filter pin bypassed by a 1-µF capacitor connected to ground
6MIC_BIASAOSource connection of external microphone source follower preamp. (Provides 29.1 kΩ to AVSS2)
7VREFAOBandgap reference output bypassed by external 1-µF VREF filter capacitor
8MIC_VSUPAOSupply voltage for external microphone source follower preamp bypassed with an external 0.1-µF capacitor
9SUB_VSSGNDIsolated substrate VSS for analog circuits
10VDD_OSCVDDPower pin for internal oscillator
11VSS_OSCGNDGround return for internal oscillator
12HB_VSS_PGNDGround return for noninverting stack of H-bridge amplifier
13VOUT_PAONoninverting H-bridge output voltage
14HB_VDDVDDPower pin for H-bridge amplifier
15VOUT_MAOInverting H-bridge output voltage
16HB_VSS_MGNDGround return for inverting stack of H-bridge amplifier
17IMODEDIDigital interface format selection pin
18MCLKDO5-MHz output clock for external DSP/µC
19DVSS1GNDGround return for digital circuits
20DVDDVDDPower pin for digital circuits
21BUF_DVDDVDDPower pin for interface digital I/O circuits
22BUF_DVSSGNDGround return for interface digital I/O circuits
23SDOUTDODigital interface serial data output pin
24SDINDIDigital interface serial data input pin
25FRAMEDODigital interface serial data framer
26SCLKDODigital interface serial shift clock
27DVSS2GNDGround return for digital circuits
28RST/LBMDOProvides external reset and low battery monitor
29EXT_RST/PWDN DIPowers down all analog blocks and holds digital outputs low until internal system is up
30AVDDVDDVDD power pin for analog circuits
31VRFILTAOPositive ADC reference pin bypassed with 1-µF capacitor to AVSS_REF
32AVSS_REFGNDGround for ADC voltage reference
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FUNCTIONAL BLOCK DIAGRAM
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AVINP
AVINM
VREF
VMID_FILT
PGA/Compressor
SUB_VSS
MIC/Sensor
Power and
Bias
Bandgap
Reference
AVDD
VRFILT
AVSS_REF
RC
Flt
Biases
Generator
Delta
Sigma
ADC
AVSS
Dec.
Filter
&
HPF
Output Buffers
IMODE
EXT_RST/PWDN
Digital
Interface
SCLK
SDOUT
FRAME
Delta
Sigma
DAC
DVDDMIC_VSUP
DVSSMIC_BIAS
BUF_DVDD
BUF_DVSS
SDIN
HB_VDD
HB_VSS_P
H−Bridge
Speaker
Driver
POR
Oscillator
HB_VSS_M
VOUT_P
VOUT_M
RST/LBM
VDD_OSC
VSS_OSC
MCLK
6
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OPERATION
The power source may be a zinc-air battery operating at a typical voltage of 1.3 V. A single external de-coupling
capacitor of 1 µF is recommended on the main power supply.
VOLTAGE and CURRENT, OPERATING TEMPERATURE AT 25°C
PARAMETERTEST CONDITIONMINTYPMAXUNIT
AVDD, DVDD (All pins of type AVDD, DVDD in
pin-out table)
IS (supply current)
Steady-state battery supply
S Unloaded: H-Bridge output open
S Microphone resistor model connected (see Figure 6)
S Power supplies = 1.3 V
S No receiver attached
1.11.31.5V
350µA
FUNCTIONAL INPUT CHANNEL PERFORMANCE REQUIREMENTS
The front end is defined as the differential signal path from the PGA/compressor inputs, AVINP, and A VINM through
the delta-sigma ADC and decimation filter.
Typical Conditions; deviations are noted in table.
DOperating Temperature Range: 0°C to 70°C. All specification are at 25°C and 1.3 V unless otherwise noted.
DAVDD, DVDD range: 1.1 V to 1.5 V
DAVINP, AVINM inputs: AC coupled, Frequency ranging from 100 Hz–10 kHz
DMeasurement Bandwidth: 100 Hz–10 kHz A-weighted.
DIdle channel definition: AVINP and AVINM are both ac-coupled to AVSS.
DTypical PGAC gain range is −1 dB to 40 dB.
DMaximum input voltage: 450 mVpk.
PARAMETERTEST CONDITIONMINTYPMAXUNIT
Broad-band noiseInput referred idle channel2.4µV RMS
THD (low level)AVIN≤ PGAC threshold (see Note 1)0.010.2%
DC OffsetIdle channel−505mV
Droop at 10 kHzReferenced to amplitude at 1 kHz1.2dB
(1)
PGAC threshold = PGAC threshold voltage/maximum gain of PGAC.
0
−10
−20
−30
−40
−50
Gain − dB
−60
−70
−80
−90
−100
0 102030405060708090100
f − Frequency − kHz
0
−2
−4
−6
−8
−10
Gain − dB
−12
−14
−16
−18
−20
0 2 4 6 8 101214161820
f − Frequency − kHz
Figure 3. Input Channel Frequency Response With HPF Bypassed
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Analog-to-Digital Converter Filtered Input Voltage Reference
Function – Filters analog supply AVDD for DS-ADC reference. With a recommended 0.1-µF external capacitor
between pins VRFILT and AVSS_REF, the pole is set at approximately 72 Hz, with 1 µF, the pole is set at
approximately 7 Hz.
Programmable Gain Amplifier and Compressor
Function: The programmable gain amplifier and compressor (PGAC) amplifies the microphone or sensor output
signal, provides an appropriate impedance to the microphone buffer or sensor , and provides input gain compression
limiting depending on the input signal level if one is not using the fixed gain mode, where the PGAC gain is set by
selected register bits. Input compression limiting is discrete automatic gain correction (AGC) based on detecting the
peak input signal level using a peak detector circuit that has programmable time responses to provide AGC control,
and is intended to prevent a steady state input level up to the defined PGAC limit from being clipped. The
attack/release times of the PGAC are programmable by internal clock selection inside the PGAC digital level circuitry
that affects the rate of gain changes.
The PGAC has four modes of operation: automatic dual-rate (default), automatic single-rate, fixed single-rate, and
fixed immediate. Mode selection is controlled by bits 3 and 2 of the PDCREG register.
Automatic dual-rate mode (00, default):
In this mode of operation, the PGAC has two attack (gain decrease) rates and two release (gain increase) rates, which
may be selected by programming the FASTARREG and FORMAT4 registers. Internally, two counters are used to
control the compressor gain. The fast rate counter responds at the fast attack and release rates, and it counts down
at the attack rate to decrease the PGAC gain if the output of the PGAC is instantaneously larger than a preset
threshold (PGAC_THRES = 400-mV peak), or it counts up to increase the gain, up to the maximum allowed gain
as set by the PGACREG register, if the output of the PGAC falls below a second threshold, which is 3 dB lower
(283-mV peak), which provides hysteresis. Before the gain is allowed to increase, the signal at the output of the
PGAC must be below the lower threshold for a period of time which is controlled by bit 4 of PDCREG, and can be
50 ms (0, default) or 25 ms (1). The slow-rate counter responds at the slow attack and release rates, and it attempts
to track the state of the fast rate counter. The PGAC gain is determined by whichever counter is smaller. In this way,
the PGAC can respond and recover rapidly to short signal bursts while responding more slowly to the signal average.
Automatic single-rate mode (01):
In this mode of operation, the PGAC has one attack rate and one release rate, which may be selected by
programming the FASTARREG register. The operation of the PGAC is similar to the dual-rate mode, except that
the slow-rate counter is disabled and the PGAC gain is solely determined by the fast-rate counter.
Fixed single-rate mode (10):
In this mode of operation, the PGAC gain tracks the value specified in the PGACREG register regardless of the signal
amplitude, and changes in PGACREG cause the gain to decrease or increase at the corresponding fast attack or
release rate specified in the FASTARREG register.
Fixed immediate mode (11):
In this mode of operation, the PGAC gain tracks the value specified in the PGACREG register regardless of the signal
amplitude, and changes in PGACREG cause the gain to change immediately to the desired gain without stepping
through the intermediate gain states.
Bit 7 of the PGACREG register controls the PGAC gain read mode. While this bit is low (default), reading PGACREG
returns the contents of PGACREG. However, if this bit is set high, then any subsequent read(s) of PGACREG returns
the actual, instantaneous PGAC gain. This information may be useful, for example, for dynamic range expansion,
effectively undoing the compression effect in the automatic modes of operation.
Characteristics: Compression limits the PCAG output. PGACREG is a programmable register.
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Specifications at 25°C, AVDD = 1.3 V
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
Input Signal Parameters
Maximum signal swingGain = −1 dB900mV
Block Parameters
Gain size step0.30.50.7dB
(1)
Based on a system clock of 1.280 MHz.
(2)
For fixed gain mode the rate is 80 KdB/s to new programmed value of gain. All intermediate 0.5 dB gain steps are passed through to reach new
gain.
PP
Delta Sigma A/D Converter/Anti-alias Filter
Function: Converts the PGAC differential output to a digital word with an equivalent dynamic range of approximately
14 bits.
Characteristics: The delta sigma ADC has a 64 oversampling ratio, a 1.28-MHz master clock, and a 40-kHz output
data rate. Digital coding is 2s complement. Tones are at least 12 dB below broadband noise level. Full-scale signal
range corresponds to +215 –1, −2
15
Specifications at 25°C, AVDD = 1.3 V
PARAMETER
Block parameters
Dynamic range−3 dB rel. to reference87dB
Input sample rate1.28MHz
Output sample rate40kHz
THDBW: 100 Hz−10 kHz85dB
TEST CONDITIONSMINTYPMAXUNIT
Digital High-Pass Filter
Function: Provide a high-pass filter in ADC signal path. The high-pass filter (HPF first order) removes dc offsets
introduced into the channel. FORMAT1 register selections for a 50 Hz, 100 Hz, or bypass are available.
Characteristics: Programmable selections for a 50 Hz, 100 Hz, or bypass are available. The default HPF pole is
50 Hz.
Specifications
PARAMETER
HPF corner frequency−3 dB nom mode50Hz
TEST CONDITIONSMINTYPMAXUNIT
Delta Sigma DAC
Function: Generates an over-sampled bit string to drive the H-bridge output amplifier such that when filtered
reproduces the desired analog waveform.
Characteristics: A 32 times over-sampled modulator multi-bit design.
Specifications
fd
(input_data)
f
clk
PARAMETER
Signal; BW = 10 kHz40kHz
TEST CONDITIONSMINTYPMAXUNIT
640kHz
9
H-Bridge Load Switching
AVSS
Idle channel, measured at output of channel,
Broadband noise
Idle channel, measured at output of channel,
Vrms
Maximum output swing
V
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H-bridge Output Driver
Function: An H-bridge output driver efficiently converts the delta sigma DAC modulator output signals. The external
load provides the low-pass filtering that recovers the differential analog signal from the H-bridge.
Characteristics: Standard H-bridge configuration with transistors sized to differentially drive the load impedance.
The load impedance is complex and a function of frequency.
Inverting Phase
VDD ( vbat)
OUTMM
OUTPOUTM
Receiver
Load
AVSS
OUTPP
NOTE:
Noninverting Phase
VDD (vbat)
OUTPM
OUTPOUTM
OUTMP
VDD does not necessarily have to be connected to the same potential as AVDD, it could be connected to a higher potential than A VDD, equal
to A V DD, but not less than AVDD.
Receiver
Load
OUTMM
OUTPP
OUTPM
OUTMP
Figure 4. Definition of Phase and Output Switching Current Polarity
Specifications at 25°C, HB_VDD = 1.3 V
PARAMETER
Block Parameters
DC offsetIdle channel; Differential across VOUT_P and VOUT_M−505mV
Microphone Power Supply
Function: The microphone power supply circuit provides a constant power supply voltage and bias current for the
microphone preamp or sensor bias, provides a low-noise voltage reference (ac ground) for the PGAC, provides
regulated PGAC comparator threshold levels, provides bandgap regulated POR comparator trip voltage levels, and
provides a bandgap regulated current for the biases generator circuit.
Characteristics: The low-dropout regulator configuration or single stage, single-pole amplifier drives an external
0.1-µF capacitor. The regulator does not oscillate under no-load or loaded conditions. The circuit supplies up to 50-µA
of continuous current.
Specifications at 25°C, AVDD = 1.3 V
PARAMETER
MIC_VSUPIL = 20 µA0.870.940.97V
VMID_FILT0.59 × A VDD0.78V
PSRR0.1-µF external bypass cap from MIC_VSUP to AVSS2.55dB
Output impedance1.5kΩ
TEST CONDITIONSMINTYPMAXUNIT
MCLK Output
Function: Provides a clock signal for external use.
Specifications at 25°C, VDD_OSC, DVDD, BUF_DVDD = 1.3 V
Power-On Reset
Function: Provides a reset signal upon power up (stable voltage reference) that initializes the digital interface. It also
provides a gating signal to the delta-sigma DAC modulator to prevent audible pops and clicks from erroneous data
sent to the H-bridge circuit at power up and during periods when battery voltage has degraded below 1.05 V for an
extended period of time (typically greater than 44 µs). The reset signal is asynchronous to MCLK. Digital interface
does not start operating until after t
_valid has transpired.
(VDD)
POR has to:
DDeal with system’s on/off switch bounce lasting 100 ms or less.
DDetect when the power supply AVDD is ≥1.1 V to enable the H-bridge output.
DProvide kick-start to oscillator.
DDetect when VDD degrades below 1.05 V for a period of time that is nontransient, and gate H-bridge output.
Specifications at 25°C, AVDD = 1.3 V
PARAMETER
t
_valid:
(VDD)
Time VDD considered valid at powerup after switch bounce has settled.
Allowed transient spike below 1.05 V before H-bridge output and digital interface
are not asserted.
POR on1.1
POR off1.05
TEST CONDITIONSMINTYPMAXUNIT
VDD > 1.1 V100ms
VDD < 1.05 V44µs
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DIGITAL INTERFACE
Function: The digital interface can be selected (IMODE=LOW) as a serial audio/control interface (SACI), which is
the McBSP DSP-codec protocol, or (IMODE=HIGH), a serial peripheral interface (SPI). Either SACI or SPI sends
out a 16-bit audio stream from the ∆−Σ ADC and receives a 20-bit audio stream going to the ∆−Σ DAC/H-Bridge.
Several control functions, READ/WRITE to user registers, are also included totaling five 8-bit registers. Four pins,
SCLK, FRAME, SDIN and SDOUT, are employed in SACI or SPI. An internal register map exists that contains
read/write program registers for a variety of FORMA T (user) settings. The register bits that are designated not used
will always read back zero or voltage level VSS regardless of what is written to them.
DIG INTERFACE PINI/ODESCRIPTION
SCLKOutput Bit shift clock. SCLK has an internal pull down.
FRAMEOutputData frame sync: controls the separation of audio channels and provides a reset/synchronization
to the interface’s internal state machine. FRAME has an internal pull down.
NOTE A:The dotted line indicates the connection is not essential for communication to work.
SDOUT
FRAMEFSX
SDINDX
SCLK
MCLK
(See Note A)
DR
FSR
CLKR
CLKS
CLKX
CLKIN
SLAVE
C54x
Figure 5. AIC111 McBSP DSP-Codec Interface
McBSP DSP-Codec (SACI) Protocol
Use this protocol when interfacing to TI DSPs.
DThe SACI works in a master mode.
DSCLK = 1.28 MHz. FRAME (= 40 kHz) has a 50% duty cycle. FRAME is an output.
D32-bit control/audio data, written on the SDIN pin, consist of a 20-bit audio word going to the ∆−Σ DAC, and a
12-bit control word.
DDAC input has two modes of operation, a 20-bit mode, and a 16-bit mode.
DThe 12-bit control word consists of: a R/W bit, 3 address bits, and 8-bits of control register content. Note that
the R/W bit is defined as 0=READ, and 1=WRITE.
DWhen the 3 address bits are all zeros, the control function of the SACI is disabled.
D24-bit audio/control data, read from the SDOUT pin, consist of one 16-bit output from the ∆−Σ ADC followed by
an 8-bit control word.
DAll data/control words are formatted as the MSB first.
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20-Bit Mode
D/A Input
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D19 − D0
AIC111 Input
16-Bit Mode
D/A Input
AIC111 Input
D19 D19 D19 D19
D19 − D0
D19 D19 D19
D19 D19
D19
NOTE B:For 5-bit left shift, digital word is limited to 15 bits with sataration.
DAIC111 can also implement a master SPI protocol.
DSCLK supplies a bit shift clock of 1.28 MHz to the SPI port of a slave device.
DFRAME must be in the active low state prior to data transaction and must stay low for the duration of data
transaction. Before communication, there are eight silent cycles on SCLK. During this period FRAME also sends
a pulse to reset the slave device.
DWhen the control function is not required, the AIC111 transmits a 16-bit audio word to and receives a 20-bit audio
word from the slave device in every FRAME cycle.
DA WRITE/READ of an 8-bit user register (address 0x01 to 0x07) takes two FRAME cycles.
DAll data/control words are formatted as the MSB first.
If A2, A1, and A0 = 0, one gets audio data only and W/R is a don’t care. If in the previous frame A2, A1, and A0 = 0, then one gets both audio
and control data depending on the W/R bit defined as Read = 0 and Write = 1.
0x00ReservedReserved for future use
0x01PGACREGPGAC gain register
0x02HPFSFTREGHPF and shift control register
0x03PDCREGPower-down control register
0x04FASTARREGFast attack/release rate control register
0x05SLOWARREGSlow attack/release rate control register
0x06−07ReservedReserved for future use
NOTE:
Do not write to the reserved registers.
CONTROL REGISTERS
CONTROL LOGIC
DATA BLOCK
ADC
DAC/H−Bridge
Oscillator
Power−on Reset
Mic Power/VREF
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PGACREG
BITNAMEFUNCTIONDEFAULT=0x46
HPFSFTREG
BITNAMEFUNCTIONDEFAULT=0x11
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7PGAC_READ_MODESelect register contents or actual gain to read
0: Read FORMAT0 register contents (default)
1: Read actual PGAC gain
6:0PGAC_GAIN [6:0]PGAC gain adjustment (0.5 dB steps). A full table is found in the
Appendix Section of this data sheet.
0x52 = +40.0 dB
0x51 = +39.5 dB
0x50 = +39.0 dB
…
0x46 =+34.0 dB (default)
….
0x01 = −0.5 dB
0x00 = −1.0 dB
00: normal mode
01: HPF bypass
10: 100 Hz corner frequency
11: Not used
4:2SHIFT [2:0]Select shift bits when ADC 16-b output is used as DAC 20-b input.
000: no shift−24 db gain
001: 1b left shift−18 dB gain
010: 2b left shift−12 dB gain
011: 3b left shift−6 dB gain
100: 4b left shift (default)0 dB gain
101: 5b left shift+6 dB gain
11X: 5b left shift
1:0DAC_MODESelect DAC mode of operation.
00: DAC off, powered down
01: 16-bit input goes through shifter (default)
10: 20-bit input bypasses shifter
11: ADC→DAC digital loopback
Figure 11. Interfacing to the TMS320C54xx for a Hearing Aid Application
Required external capacitors:
D 1-µF coupling capacitor on AVINP, AVINM
D 1-µF from VMID_FILT to analog ground
D 1-µF from VREF to analog ground
D 0.1-µF from MIC_VSUP to analog ground
D At least 0.1-µF from VRFILT to analog ground. 1-µF from VRFILT to analog ground is recommended.
23
SLAS382 − JUNE 2003
TI MSP430F12x APPLICATION CIRCUIT
1.3 V
www.ti.com
Microphone
Speaker
MIC_VSUP
MIC_BIAS
AVDD
AIC111
DVDD
BUF_DVDD
SCLK
SDIN
I/O
SDOUT
B
U
F
FRAME
F
E
R
S
RST/LBM
MCLK
2.8 V
(See Note A)
RST/NMI
P2.5
INCLK
SOMI
SIMO
STE
XIN
VSS
VCC
MSP430F12x
AVSS
DVSS
BUF_DVSS
LBM = Low Battery Monitor ’430 Can Also Use
EXT_RST/PWDN to Reset or Power Down the AIC111
Note A: P2.5 enables the MSP430F12x to shut down the AIC111 when desired.
Figure 12. Interfacing to the MSP430F12x for a Hearing Aid Application
24
www.ti.com
SLAS382 − JUNE 2003
MECHANICAL AND ENVIRONMENTAL
Packaging
The AIC111 is available in a 32-pin quad QFN 5x5-mm package. The AIC111 will be available 3rd quarter 2003 as
bare solder ball bumped die intended for direct PCB mounting (also known as wafer scale packaging).
DFor QFN packaged part in tubes order: AIC111RHB.
DFor QFN packaged part in tape and reel order: AIC111RHBR.
DFor ball bumped die (in waffle pack) order: AIC111YE (Preview, available 3rd quarter 2003).
DFor ball bumped die (in tape and reel) order: AIC111YER (Preview, available 3rd quarter 2003).
BOND PAD PITCH AND DIE AREA
Die dimensionsX = 2737.62 µ, Y = 3175.02 µ,
Maximum die area (includes scribe area)13.47kmil2 (8.69mm2)
Minimum bond pad pitch202.95 µ or 7.99 mil
Number of pins32
Pad locations:Bond Pad CoordinatesBond Pad Dimensions
Units: micronsPad #XcenterYcenterDiameter
Dimensions: X = 2737.62 Y = 3175
Bond pad origin: X = 0.000 Y = 0.000
Bond pad offset: X = 0.000 Y = 0.000
(X,Y) = (0,0) is located at the left bottom of the die by pads 8 and 9.
See section 1.6, Figure 1−1.
DThe final application is assumed to use plastic overmolding where the die is hermetically sealed, and the
maximum ratings apply only to the QFN package and not to the WSCP.
26
PACKAGE OPTION ADDENDUM
www.ti.com
9-Oct-2007
PACKAGING INFORMATION
Orderable DeviceStatus
(1)
Package
Type
Package
Drawing
Pins Package
Qty
Eco Plan
AIC111RHBACTIVEQFNRHB3273Green (RoHS &
no Sb/Br)
AIC111RHBG4ACTIVEQFNRHB3273Green (RoHS &
no Sb/Br)
AIC111RHBRACTIVEQFNRHB323000 Green(RoHS &
no Sb/Br)
AIC111RHBRG4ACTIVEQFNRHB323000 Green(RoHS &
no Sb/Br)
AIC111YEACTIVEDIESALEYE3239TBDCall TICall TI
AIC111YERACTIVEDIESALEYE321000TBDCall TICall TI
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(2)
Lead/Ball Finish MSL Peak Temp
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
Call TILevel-2-260C-1 YEAR
(3)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
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provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
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incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.