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TSC2117 Datenblatt(PDF) 10 Page - Texas Instruments

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Teilenummer TSC2117
Bauteilbeschribung  Low-Power Audio Codec With Embedded miniDSP, Stereo Class-D Speaker Amplifier, and Smart Four-Wire Touch-Screen Controller
Download  192 Pages
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Hersteller  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TSC2117 Datenblatt(HTML) 10 Page - Texas Instruments

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(1)
DAC to speaker-out PSRR measurement is calculated as
PSRR
+ 20 log10
VSIG
Supp
V
SPK1 2
.
TSC2117
Low-Power Audio Codec With Embedded miniDSP, Stereo Class-D
Speaker Amplifier, and Smart Four-Wire Touch-Screen Controller
SLAS550A – APRIL 2009 – REVISED JUNE 2009
www.ti.com
Electrical Characteristics (continued)
At 25
°C, AVDD, HVDD, IOVDD, TSVDD, = 3.3 V, SLVDD, SRVDD = 3.6V, DVDD = 1.8 V, VREF = 3.3 V, f
S (audio) =
48 kHz, CODEC_CLKIN = 256
× f
S, PLL = Off, SAR input is AUX1, VOL/MICDET pin disabled (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DAC OUTPUT to CLASS-D SPEAKER OUTPUT; Load = 8
Ω (differential), 50 pF (continued)
SLVDD = SRVDD = 3.6 V, BTL measurement, DAC
THD
Total harmonic distortion
input = –6 dBFS, DAC VCM (page 1/register 31, bits
–72
dB
D4–D3) = 1.65 V, class-D gain = 6 dB
SLVDD = SRVDD = 3.6 V, BTL measurement, DAC
Total harmonic distortion +
THD+N
input = –6 dBFS, DAC VCM (page 1/register 31, bits
–71
dB
noise
D4–D3) = 1.65 V, class-D gain = 6 dB
SLVDD = SRVDD = 3.6 V, BTL measurement, ripple
PSRR
Power-supply rejection ratio(1)
57
dB
on SLVDD/SRVDD = 200 mVp-p at 1 kHz
Mute attenuation
110
dB
SLVDD = SRVDD = 3.6 V, BTL measurement, DAC
VCM (page 1/register 31, bits D4–D3) = 1.65 V,
540
class-D gain = 18 dB, THD = 10%
mW
SLVDD = SRVDD = 4.3 V, BTL measurement, DAC
PO
Maximum output power
VCM (page 1/register 31, bits D4–D3) = 1.65 V,
790
class-D gain = 18 dB, THD = 10%
SLVDD = SRVDD = 5.5 V, BTL measurement, DAC
VCM (page 1/register 31, bits D4–D3) = 1.65 V,
1.29
W
class-D gain = 18 dB, THD = 10%
Output-stage leakage current
SLVDD = SRVDD = 4.3 V, device is powered down
80
nA
for direct battery connection
(power-up-reset condition)
ADC and DAC POWER CONSUMPTION
For ADC and DAC power consumption based per selected processing block, see Section 5.4
DIGITAL INPUT/OUTPUT
Logic
CMOS
family
0.7
×
IIH = 5 µA, IOVDD ≥ 1.6 V
IOVDD
VIH
V
IIH = 5 µA, IOVDD < 1.6 V
IOVDD
0.3
×
IIL = 5 µA, IOVDD ≥ 1.6 V
–0.3
IOVDD
VIL
V
Logic level
IIL = 5 µA, IOVDD < 1.6 V
0
0.8
×
VOH
IOH = 2 TTL loads
V
IOVDD
0.1
×
VOL
IOL = 2 TTL loads
V
IOVDD
Capacitive load
10
pF
ELECTRICAL SPECIFICATIONS
10
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