STEVAL-CCA007V1 STMicroelectronics, STEVAL-CCA007V1 Datasheet - Page 22

• Manufacturer Part Number: STEVAL-CCA007V1
• Description: BOARD EVAL BASED ON TS2012IQT
• Manufacturer: STMicroelectronics

Specifications of STEVAL-CCA007V1

• Design Resources: STEVAL-CCA007V1 Gerber Files STEVAL-CCA007V1 Schematic STEVAL-CCA007V1 Bill of Material
• Amplifier Type: Class D
• Output Type: 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 2.8W x 2 @ 4 Ohm
• Voltage - Supply: 2.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Board Type: Fully Populated
• Utilized Ic / Part: TS2012
• Description/function: Audio Amplifiers
• Operating Supply Voltage: 2.5 V to 5.5 V
• Output Power: 2.2 W
• Product: Audio Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: TS2012
• Other names: 497-8258

Application information
4
4.1
4.2
Note:
4.3
22/30
Application information
Differential configuration principle
The TS2012 is a monolithic fully-differential input/output class D power amplifier. The
TS2012 also includes a common-mode feedback loop that controls the output bias value to
average it at V
always have a maximum output voltage swing, and by consequence, maximize the output
power. Moreover, as the load is connected differentially compared with a single-ended
topology, the output is four times higher for the same power supply voltage.
The advantages of a full-differential amplifier are:
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●
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Gain settings
In the flat region of the frequency-response curve (no input coupling capacitor or internal
feedback loop + load effect), the differential gain can be set to 6, 12 18, 24 dB depending on
the logic level of the G0 and G1 pins, as shown in
Table 9.
Between pins G0, G1 and GND there is an internal 300k
are floating, the gain is 6 dB. In full standby (left and right channels OFF), these resistors are
disconnected (HiZ input).
Common mode feedback loop limitations
As explained previously, the common mode feedback loop allows the output DC bias voltage
to be averaged at V
Due to the V
common mode feedback loop can fulfil its role only within the defined range.
High PSRR (power supply rejection ratio)
High common mode noise rejection
Virtually zero pop without additional circuitry, giving a faster start-up time compared
with conventional single-ended input amplifiers
Easier interfacing with differential output audio DAC
No input coupling capacitors required thanks to common mode feedback loop
G1
0
0
1
1
ic
Gain settings with G0 and G1 pins
limitation of the input stage (see
CC
/2 for any DC common mode input voltage. This allows the device to
CC
/2 for any DC common mode bias input voltage.
G0
0
1
0
1
Table 2: Operating conditions on page
Table
Gain (dB)
12
18
24
9.
Ω
6
(+/-20%) resistor. When the pins
Gain (V/V)
16
2
4
8
TS2012
4), the