DEMOTS2007Q STMicroelectronics, DEMOTS2007Q Datasheet - Page 22

• Manufacturer Part Number: DEMOTS2007Q
• Description: BOARD DEMO FOR TS2007IQT
• Manufacturer: STMicroelectronics

Specifications of DEMOTS2007Q

• Amplifier Type: Class D
• Output Type: 1-Channel (Mono)
• Max Output Power X Channels @ Load: 2.8W x 1 @ 4 Ohm
• Voltage - Supply: 2.4 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Board Type: Fully Populated
• Utilized Ic / Part: TS2007
• Product: Audio Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6360

Application information
4
4.1
4.2
Note:
4.3
4.4
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Application information
Differential configuration principle
The TS2007 is a monolithic fully-differential input/output class D power amplifier. The
TS2007 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 to 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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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 either 6 or 12 dB depending
on the logic level of the GS pin:
Between the GS pin and V
gain is 6 dB.
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.
Low frequency response
If a low frequency bandwidth limitation is required, it is possible to use input coupling
capacitors. In the low frequency region, the input coupling capacitor C
effect. C
off frequency (see
High PSRR (power supply rejection ratio)
High common mode noise rejection
Virtually zero pop without additional circuitry, giving a faster start-up time compared to
conventional single-ended input amplifiers
Easier interfacing with differential output audio DAC
No input coupling capacitors required thanks to common mode feedback loop
in
forms, with the input impedance Z
ic
GS
limitation of the input stage (see
CC
1
0
/2 for any DC common mode input voltage. This allows the device to
Table 5
CC
/2 for any DC common mode bias input voltage.
CC
to
Table
there is an internal 300k
9).
Gain (dB)
12dB
6dB
in
, a first order high-pass filter with a -3dB cut-
Table 2: Operating conditions on page
Ω
resistor. When the pin is floating the
in
Gain (V/V)
starts to have an
2
4
TS2007
3), the