Rev 1.1
DIO2133
3-Vrms Audio Driver with Adjustable Gain
Features
Descriptions
The DIO2133 is an integrated solution for Set-top
Voltage Output at 600Ω Load
2Vrms with 3.3V supply voltage
box and high definition player, and designed to
3Vrms with 5.0V supply voltage
optimize the audio driver circuit performance
while reducing the BOM cost by eliminating the
Ultra Low noise and THD
SNR>112dB
peripheral
discrete
components
for
noise
Typical Vn100dB
audio driver that designed to allow for the
No Pop/Clicks Noise when Power ON/OFF
removal of output AC-coupling capacitors.
No Need for Output DC-Blocking Capacitors
Featuring differential input mode, gain range of
Optimized Frequency Response between
±1V/V to ±10V/V can be achieved via external
gain resistor setting. The DIO2133 is able to offer
20Hz–20kHz
Accepting Differential Input
3Vrms output at 600Ω load with 5V supply.
Featuring external under voltage mute
Meanwhile, the DIO2133 offers built-in shut-down
HBM ESD protection: Output pin 8kV
control
Available in TSSOP-14 package
performance. Under under-voltage condition,
circuitry
for
optimal
pop-free
DIO2133 is able to detect it and mutes the output.
Applications
Block Diagram
Set-Top Boxes
High Definition DVD Players
Car Entertainment System
Medical
_
RIGHT
+
+
LEFT
_
Ordering Information
Order Part
Number
DIO2133CT14
www.dioo.com
Top Marking
DIO2133
TA
Green/RoHS
-40 to +85°C
Package
TSSOP-14
Tape & Reel, 2500
© 2016 DIOO MICROCIRCUITS CO., LTD
DIO2133• Rev. 1.1
DIO2133
+INR
1
-INR
2
OUTR
SGND
14
+INL
13
-INL
3
12
OUTL
4
11
UVP
EN
5
10
PGND
PVSS
6
9
PVDD
CN
7
8
CP
-
+
+
-
Charge
Pump
Figure 1 Top View
Pin Descriptions
PIN
I/O
Description
Name
NO.
+INR
1
I
Right-channel positive input
-INR
2
I
Right-channel negative input
OUTR
3
O
Right-channel output
SGND
4
P
Signal ground
EN
5
I
Enable input, active-high
PVSS
6
P
Supply voltage
CN
7
I/O
Charge-pump flying capacitor negative terminal
CP
8
I/O
Charge-pump flying capacitor positive terminal
PVDD
9
P
Positive supply
PGND
10
P
Power ground
UVP
11
I
Under voltage protection input
OUTL
12
O
Left-channel output
-INL
13
I
Left-channel negative input
+INL
14
I
Left-channel positive input
Note: For simplicity, all VDD below stands for PVDD.
www.dioo.com
© 2016 DIOO MICROCIRCUITS CO., LTD
DIO2133• Rev. 1.1
3-Vrms Audio Driver with Adjustable Gain
Pin Assignment
DIO2133
Stresses beyond those listed under “Absolute Maximum Rating” may cause permanent damage to the device. These are stress
ratings only and functional operation of the device at these or any other condition beyond those indicated in the operational sections
of the specifications is not implied. Exposure to absolute maxim rating conditions for extended periods may affect device reliability.
Parameter
Rating
Unit
-0.3 to 7.5
V
GND-0.3 to VDD+0.3
V
600
Ω
-0.3 to VDD+0.3
V
Storage Temperature Range
-65 to 150
°C
Junction Temperature
-65 to 150
°C
115
°C/W
8
kV
Supply Voltage
Input Voltage
Minimum load impedance
EN to GND
TSSOP-14,ӨJA
HBM ESD, JESD22-A114
Output Pins
Recommend Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended Operating
conditions are specified to ensure optimal performance to the datasheet specifications. DIOO does not Recommend exceeding them
or designing to Absolute Maximum Ratings.
Symbol
VDD
Parameter
Supply Voltage
Min.
Typ.
Max.
Unit
3
5
5.5
V
EN High level Input Voltage(VDD=5V)
1.2
EN High level Input Voltage(VDD=3.3V)
1.1
VIH
V
EN Low level Input Voltage(VDD=5V)
0.4
V
EN Low level Input Voltage(VDD=3.3V)
0.3
V
85
°C
VIL
TA
www.dioo.com
Operating Temperature Range
-40
© 2016 DIOO MICROCIRCUITS CO., LTD
DIO2133• Rev. 1.1
3-Vrms Audio Driver with Adjustable Gain
Absolute Maximum Ratings
DIO2133
Typical value: TA = 25°C, unless otherwise specified.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
-3.3
0
3.3
mV
VOS
Output Offset Voltage
VDD=3-5V, Input grounded, unity gain
OVP
VDD Over Voltage Protection
VDD>5.5V, then IC shut down
PSRR
Power supply rejection ratio
VOH
VOL
5.7
V
90
dB
VDD=5V,RL=2.5kΩ
4.9
V
VDD=3.3V,RL=2.5kΩ
3.2
V
High level output voltage
VDD=5V,RL=2.5kΩ
-4.80
V
VDD=3.3V,RL=2.5kΩ
-3.10
V
Low level output voltage
IIH
EN High level input current
VDD=5V,VI=VDD
1
µA
IIL
EN Low level input current
VDD=5V,VI=0V
1
µA
IDD
Supply current
VDD=3.3V, VI= VDD, No load
11
VDD=5V, VI= VDD, No load
12
mA
1
Shut down mode, VDD=3-5V
mA
Operating Characteristics
Typical value: VDD=3.3V, RL=2.5kΩ, CPUMP=1µF,CPVSS=1µF, CIN=10µF, RIN=10kΩ, Rfb=20kΩ,TA=25°C, unless otherwise specified.
Symbol
VO
THD+N
XTALK
IO
SNR
Parameter
Output Voltage
THD=1%, VDD=3.3V, f=1kHz
Total harmonic distortion + noise
VO=2VRMS, f=1kHz, RL=600Ω
Channel crosstalk
Max.
2.05
Unit
VRMS
VO=2VRMS, f=1kHz
95
dB
Maximum output current
VDD=3.3V
60
mA
Signal noise ratio
VO=2VRMS, BW=22kHz, A-weighted
112
dB
12
V/µs
4.5
µVRMS
7
MHz
140
dB
VN
Noise output voltage
GBW
Unity gain bandwidth
AVO
Open loop voltage gain
VUVP
External under-voltage detection
IHys
External under-voltage detection
hysteresis current
fCP
Charge pump frequency
www.dioo.com
Typ.
%
Slew rate
@mute
Min.
0.001
SR
Attenuation
Conditions
Input-to-output attenuation in
shutdown
BW=20Hz to 22kHz,VDD=3.3V
1.08
EN=0V
1.11
1.14
V
5
µA
310
kHz
90
dB
© 2016 DIOO MICROCIRCUITS CO., LTD
DIO2133• Rev. 1.1
3-Vrms Audio Driver with Adjustable Gain
Electrical Characteristics
DIO2133
Typical value: VDD=5V, RL=2.5kΩ, CPUMP=1µF,CPVSS=1µF, CIN=10µF, RIN=10kΩ, Rfb=20kΩ,TA=25°C, unless otherwise specified.
Symbol
VO
THD+N
XTALK
IO
SNR
Parameter
Output Voltage
THD=1%, VDD=5V, f=1kHz,
RL=100kΩ
3.1
Typ.
Max.
Unit
VRMS
0.001
%
VO=3VRMS, f=1kHz
95
dB
Maximum output current
VDD=5V
60
mA
Signal noise ratio
VO=3VRMS, BW=22kHz, A-weighted
112
dB
12
V/µs
5.1
µVRMS
7
MHz
140
dB
Channel crosstalk
VN
Noise output voltage
GBW
Unity gain bandwidth
AVO
Open loop voltage gain
VUVP
External under-voltage detection
IHys
External under-voltage detection
hysteresis current
fCP
Charge pump frequency
www.dioo.com
3.01
VO=3VRMS, f=1kHz, RL=600Ω
Slew rate
@mute
Min.
THD=1%, VDD=5V, f=1kHz
Total harmonic distortion + noise
SR
Attenuation
Conditions
Input-to-output attenuation in
shutdown
BW=20Hz to 22kHz,VDD=5V
1.08
EN=0V
1.11
1.14
V
5
µA
310
kHz
90
dB
© 2016 DIOO MICROCIRCUITS CO., LTD
DIO2133• Rev. 1.1
3-Vrms Audio Driver with Adjustable Gain
Operating Characteristics
DIO2133
At TA = +25℃, CPUMP=0.33µF,CPVSS=1µF,unless otherwise noted.
IDD vs. Temperature
IDD vs. VDD
14
14
13
13
12
12
IDD (mA)
IDD (mA)
VDD=5V, EN=H, Gain=2
11
11
10
10
9
9
8
3.0
3.5
4.0
4.5
5.0
8
-40
5.5
-20
0
20
40
60
80
100
120
Temperature (C )
VDD (V)
VOS vs. Temperature
VOS vs. VDD
3
3
2
2
1
1
VOS (mV)
VOS (mV)
VDD=5V, Gain=100
0
-1
-1
Right
Left
-2
-3
3.0
3.5
4.0
4.5
5.0
VDD (V)
Slew Rate
VDD=5V, G=1 (buffer), VIN=0~1V@1kHz Rise
www.dioo.com
0
Right
Left
-2
5.5
-3
-40
-20
0
20
40
60
80
100
120
Temperature (C )
Slew Rate
VDD=5V, G=1 (buffer), VIN=0~1V@1kHz Fall
© 2016 DIOO MICROCIRCUITS CO., LTD
DIO2133• Rev. 1.1
3-Vrms Audio Driver with Adjustable Gain
Typical Performance Characteristics
DIO2133
THD+N vs. VOUT
THD+N VS.Vout
THD+N VS.Vout
10
10
VDD=3.3V,G=2
0.1
0.01
L_RL=600
R_RL=600
L_RL=10k
R_RL=10k
1E-3
1E-4
VDD=5V,G=2
1
THD+N (%)
THD+N (%)
1
0.1
0.01
L_RL=600
R_RL=600
L_RL=10k
R_RL=10k
1E-3
0.1
1E-4
2
1
0.1
THD+N vs. Frequency
THD+N VS.Frequency
THD+N VS.Frequency
1
L_RL=600
R_RL=600
L_RL=10k
R_RL=10k
THD+N (%)
0.01
VDD=3.3V,G=2
VIN=1Vrms
0.01
1E-3
100
1k
L_RL=600
R_RL=600
L_RL=10k
R_RL=10k
0.1
0.1
THD+N (%)
3
THD+N vs. Frequency
1
1E-3
2
1
Vout (Vrms)
Vout (Vrms)
VDD=5V,G=2
VIN=1.5Vrms
100
10k
1k
10k
Frequency (Hz)
Frequency (Hz)
GBW vs. Frequency
PSRR vs. Frequency
PSRR VS.Frequency
GBW VS.Frequency
-20
20
VDD=5V@200mVpp
-30
-40
PSRR (dB)
GBW (dB)
10
0
-60
-70
-80
-10
-20
-50
-90
VDD=5V,G=10
VIN=50mVpp
10
100
1k
10k
100k
Frequency (Hz)
www.dioo.com
1M
10M
-100
10
100
1k
10k
100k
1M
10M
Frequency (Hz)
© 2016 DIOO MICROCIRCUITS CO., LTD
DIO2133• Rev. 1.1
3-Vrms Audio Driver with Adjustable Gain
THD+N vs. VOUT
DIO2133
OVP
过程数据
5.6
*
限
5.9
值
5.7501
30
（组内） 0.0401382
（整体） 0.0557138
组内
整体
3-Vrms Audio Driver with Adjustable Gain
OVP正态分布图
潜在（组内）能力
Cp 1.25
CPL 1.25
CPU 1.24
Cpk 1.24
整体能力
Pp
PPL
PPU
Ppk
Cpm
5.60
实测性能
规格下限 0.00
规格上限 0.00
M
0.00
5.64
5.68
预期组内性能
PPM < 规格下限
92.16
PPM > 规格上限
94.01
合计 PPM
186.17
www.dioo.com
5.72
5.76
5.80
5.84
0.90
0.90
0.90
0.90
*
5.88
Over 预期整体性能
Voltage Protection (V)
PPM < 规格下限 3528.66
PPM > 规格上限 3566.85
合计 PPM
7095.51
© 2016 DIOO MICROCIRCUITS CO., LTD
DIO2133• Rev. 1.1
DIO2133
C3
R1
R1
C2
+
C3
LEFT
INPUT
C3
C3
R1
R2
R2
R3
-
RIGHT
- INPUT +
R1
C2
R3
C1
C1
R3
R3
R2
R2
DIO2133
TVS
Diode
+INR
+INL
-INR
-INL
OUTR
OUTL
SGND
UVP
EN
PGND
PVSS
PVDD
CN
CP
TVS
Diode
C1
C1
RIGHT
OUTPUT
LEFT
OUTPUT
R13
R11
R12
EN
GPIO
10k
System
Supply
3.3V
Supply
1µF
Cpvss
Cpump
Differential-input, single-ended output, second-order filter
R1=15kΩ, R2=30kΩ, R3=47kΩ, C1=33pF, C2=150pF, C3=6.8µF, R11=5.6kΩ, R12=2.43kΩ, R13=15KΩ
Cpvss=0.33-1µF, Cpump=0.33-1µF
Notes:
1. In some applications, if the power supply noise needs
to be filtered, the ferrite bead is recommended in a value
of 600ohm@100MHz, instead of RC network. RC
network normally will lower the power supply resulting in
the degraded the audio performance. If the resistor is not
chosen properly, which can trigger the internal UVP
detection circuit and shut down the output. As depicted
below.
2. In order to protect the device against the power surge,
transient voltage suppressor (TVS) devices are
recommended at the output pins OUTL/OUTR.
TVS
Diode
FB1
PVDD
VDD
OUT L/R
LEFT/RIGHT
OUTPUT
600ohm@100MHz
www.dioo.com
© 2016 DIOO MICROCIRCUITS CO., LTD
DIO2133• Rev. 1.1
3-Vrms Audio Driver with Adjustable Gain
Application Circuit
DIO2133
Gain-SettingResistorsRanges and Input-Blocking Capacitors
The gain-setting resistors, RIN and RFB, must be chosen so that noise, stability, and input capacitor size of the
DIO2133 are kept within acceptable limits. Voltage gain is defined as RFB divided by RIN.
Table 1 lists the recommended resistor value for different gain settings. Selecting values that are too low
demands a large input ac-coupling capacitor CIN. Selecting values that are too high increases the noise of the
amplifier.
The gain-setting resistor must be placed close to the input pins to minimize capacitive loading on these input pins
and to ensure maximum stability.
Table 1 Input Capacitor with 2Hz cutoff and Resistor Values Recommended
fCIN
Input Res.,
Feedback Res.,
RIN
Rfb
22 kΩ
22 kΩ
-1 V/V
15 kΩ
30 kΩ
-2 V/V
10 kΩ
100 kΩ
-10 V/V
Inverting Gain
1
or
2RINCIN
-IN
CIN
RIN
RFB
-
Inverting
+
1
CIN
2RINfCIN
Equation 1 Cutoff decision Cutoff
Cx
RIN
Figure 2 Inverting Gain Configurations
RFB
CIN
RIN
RFB
-IN
Non-inverting
+IN
CIN
Differential Input
+
+
Rx
Figure 3 Non-Inverting Gain Configuration
www.dioo.com
+IN
CIN
RIN
RFB
Figure 4 Differential Gain Configuration
© 2016 DIOO MICROCIRCUITS CO., LTD
DIO2133• Rev. 1.1
3-Vrms Audio Driver with Adjustable Gain
Application Notes
DIO2133
DC input-blocking capacitors are required to be added in series with the audio signal into the input pins of
DIO2133. These capacitors block the dc portion of the audio source and allow DIO2133 inputs to be properly
biased to provide maximum performance.
These capacitors form a high-pass filter with the input resistor, RIN. The cutoff frequency is calculated using the
equation below. For this calculation, the capacitance used is the input-blocking capacitor, and the resistance is
the input resistor chosen from Table 1; then the frequency and/or capacitance can be determined when one of
the two values is given.
2nd Order Filter Typical Application
Several audio DACs used today require an external low-pass filter to remove out-of-band noise. This is possible
with the DIO2133, as it can be used like a standard OPAMP. Several filter topologies can be implemented, both
single-ended and differential. In Figure 3, a multi-feedback (MFB) with differential input and single-ended input is
shown.
An ac-coupling capacitor to remove dc content from the source is shown; it serves to block any dc content from
the source and lowers the dc-gain to 1, helping reducing the output dc-offset to minimum.
The resistor values should have a low value for obtaining low noise, but should also have a high enough value to
get a small size ac-coupling capacitor.
R2
R2
C3
R1
R3
C1
-IN
C3
Differential Input
-
R1
R3
C1
-IN
C2
-
+
Iverting Input
+IN
C2
+
C3
R1
R3
C1
R2
Figure 5 Second-Order Active Low-Pass Filter
Charge Pump Flying Capacitor and PVSS Capacitor
The charge pump flying capacitor serves to transfer charge during the generation of the negative supply voltage.
The PVSS capacitor must be at least equal to the charge pump capacitor in order to allow maximum charge
transfer. Low ESR X5R or X7R capacitors are recommended selection, a value of typical 0.33μF is
recommended for CPUMP, and a value of typical 1µF is recommended for PVSS.
Capacitor values can be smaller
than the value recommended, but the maximum output voltage may be reduced and the device may not operate
to specifications.
www.dioo.com
© 2016 DIOO MICROCIRCUITS CO., LTD
DIO2133• Rev. 1.1
3-Vrms Audio Driver with Adjustable Gain
INPUT-BLOCKING CAPACITORS
DIO2133
The DIO2133 requires adequate power supply decoupling to ensure that the noise and total harmonic distortion
(THD) are low. A good low equivalent-series-resistance (ESR) X5R or X7R ceramic capacitor, typically a combine
of paralleled 0.1µF and 10µF, placed as close as possible to the device VDD lead works best. Placing this
decoupling capacitor close to the DIO2133 is important for the performance of the amplifier. For filtering
lower-frequency noise signals, a 10μF or greater capacitor placed near the audio power amplifier would also help,
but it is not required in most applications because of the high PSRR of this device.
Pop-Free Power-Up
Pop-free power up is ensured by keeping the EN (shut down pin) low during power-supply ramp up and ramp
down. The EN pin should be kept low until the input ac-coupling capacitors are fully charged before asserting the
EN pin high to achieve pop-less power up. Figure 6 illustrates the preferred sequence.
Supply
Enable
Supply
Ramp
Time for AC-Coupling
capacitors to charge
Figure 6 Power-Up Sequences
External Under-voltage Detection
External under-voltage detection can be used to shut down the DIO2133 before an input device can generate a
pop noise. Although the shut down voltage is 1.11V, customers need to consider the accuracy of system passive
components such as resistors and associated temperature variation. Users often select a resistor divider to
obtain the power-on and shut down threshold for the specific application. The typical thresholds can be
calculated as follows, respectively for VSUP_MO at 5V and 12V. Usually for best power down noise performance,
12V supply is recommended for UVP circuitry as below. Typically this 12V is the power supply which generates
the 5V supply for DIO2133 PVDD pins.
Case 1: VSUP_MO= 12V (Recommended)
VSUP_MO= 12V
VUVP=(1.11V-6µA*R13)*(R11+R12)/R12;
Vhysteresis=5µA*R13*(R11+R12)/R12;
R11
With the condition R13>>R11//R12.
For example, if R11=11k, R12=1.4k and R13=47k,
R13
UVP pin 11
Cy
R12
Then VUVP=7.334V; Vhysteresis=2.081V
Here, VUVP is the shut down threshold.
In this case, the voltage at UVP pin 11 is greater than 1.311V under worst case of VSUP_MO ripples.
www.dioo.com
© 2016 DIOO MICROCIRCUITS CO., LTD
DIO2133• Rev. 1.1
3-Vrms Audio Driver with Adjustable Gain
Decoupling Capacitors
DIO2133
VSUP_MO= 5V
VUVP=(1.11V-6µA*R13)*(R11+R12)/R12;
Vhysteresis=5µA*R13*(R11+R12)/R12;
R11
R13
With the condition R13>>R11//R12.
For example, if R11=5.6k, R12=2.2k and R13=47k,
UVP pin 11
Cy
R12
Then VUVP=2.936V; Vhysteresis=0.833V
Here, VUVP is the shut down threshold. In this case, the voltage at UVP pin 11 is greater than 1.368V
under worst case of VSUP_MO ripples.
Capacitive Load
The DIO2133 has the ability to drive a high capacitive load up to 220pF directly. Higher capacitive loads can be
accepted by adding a series resistor of 47Ω or larger.
For further assistance, please contact DIOO worldwide sales office to seek technical support. You can
find DIOO sales office information at www.dioo.com.
www.dioo.com
© 2016 DIOO MICROCIRCUITS CO., LTD
DIO2133• Rev. 1.1
3-Vrms Audio Driver with Adjustable Gain
Case 2: VSUP_MO= 5.0V
DIO2133
Dioo is a professional design and sales corporation for high-quality and performance analog semiconductors. The company focuses on
industry markets, such as, cell phone, handheld products, laptop, and medical equipment and so on. Dioo’s product families include
analog signal processing and amplifying, LED drivers and charger IC. Go to http://www.dioo.com for a complete list of Dioo product
families.
For additional product information, or full datasheet, please contact with our Sales Department or Representatives.
www.dioo.com
© 2016 DIOO MICROCIRCUITS CO., LTD
DIO2133• Rev. 1.1
3-Vrms Audio Driver with Adjustable Gain
CONTACT US
工商网监
湘ICP备2023018690号
