SGS Thomson Microelectronics TDA7535 Datasheet
DELTA/SIGMA CASCADE 20 BIT STEREO DAC
■ 20-bit resolution single ended output
■
Analog reconstruction third order Chebyshev filter
■ I2S input data format
■ On chip PLL
■ System clock: 64 Fs
■ 2 output channels
■ 0.9 VRMS single ended output dynamic
■ 3.3V power supply
■ Reset
■ Sampling rate 36KHz to 48KHz
TDA7535
TSSOP-14 SO-14
ORDERING NUMBER: TDA7535
DESCRIPTION
The TDA7535 is a stereo, digital-to-analog converter
designed for audio application, including digital interpolation filter, a third order multi bit Delta-Sigma DAC,
a third order Chebyshev's reconstruction filter and a
differential to single ended output c onverter. This device is fabricated in highly advanced CMOS, where
high speed precision analog circuits are combined
with high density logic circuits. The TDA7535, according to standard audio converter s, can accept any
2
I
S data format.
BLOCK DIAGRAM
2
I
S
I2S
PLL
DIGITAL
INPUT
CLKOUT
20
F
FIR1 FIR2
S
ALU
FIR3
The TDA7535 is available in SO-14 and TSSOP-14
packages. The total power consumption is less than
75mW.
TDA7535 is suitabl e for a wi de variety of applicati ons
where high performance are required. Its low cost
and single 3.3V power supply make it ideal for several applications, such as CD players, MPEG audio,
MIDI applications, CD-ROM drives, CD-Interactive,
digital radio applications and so on. An evaluation
board is available to perform measurement and to
make listening tests.
20
8F
S
S&H
23
64F
Σ∆ MODULATOR
S
4
D02AU1417
July 2003
THERMO DECODER &
RANDOMIZER
3rd CHEBYSHEV
SC FILTER
DIFF TO SINGLE
CONVERTER
ANALOG
OUTPUT
1/9
TDA7535
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
DD
V
CC
V
aio
V
dio
V
di5
T
T
stg
Warning: Oper ati on at o r be yo nd th ese li mit may r es ult i n pe rma nen t da mage to t he de vic e. N orm al opera tion is not g uaran te ed at th ese
THERMAL DATA
Symbol Parameter Value Unit
R
th j-amb
Note: 1. In still air
PIN CONNECTIONS (Top views)
Power supplies Digital
Analog
-0.5 to +4.6
-0.5 to +4.6
Analog Input and Output Voltage -0.5 to (VCC+0.5) V
Digital Input and Output Voltage -0.5 to (VDD+0.5) V
Digital Input Voltage (5V tolerant) -0.5 to 6.5 V
Operating Junction Temperature Range -40 to 125 °C
j
Storage Temperature -55 to 150 °C
extremes.
Thermal resistance junction to ambient
(1)
85 °C/W
V
V
N.C.
SDATA
SCK
N.C.
GND_DIG
GND_ANA
OUTSR
2
3
4
5
6
7
14
13
12
11
10
9
8
D01AU1276A
RESETN1
FSYNC
VDD_DIG
N.C.
VDD_ANA
VCM
OUTSL
PIN FUNCTION (SO14/TSSOP14)
Pin Number Pin Name Input/Output Power Description
1 N.C. - 2 SDATA I I2S Digital Data Input
3 SCK I I2S Clock Input
4 N.C. - 5 GND_DIG P Digital Ground
6 GND_ANA P Analog Ground
7 OUTSR O Right Channel single ended Output
8 OUTSL O Left Channel single ended Output
9 VCM P Reference 1.65V externally filtered
10 VDD_ANA P Analog 3.3V-Supply
11 N.C. - 12 VDD_DIG P Digital 3.3V-Supply
13 FSYNC I I2S Left-Right Channel selector
14 RESETN I Reset (active low)
2/9
TDA7535
RECOMMENDED DC OPERATING CONDITIONS
Symbol Parameter Test Condition Min. Typ. Max. Unit
V
3.3V Digital Power Supply
DD
Voltage
V
3.3V Analog Power Supply Voltage
CC
POWER CONSUMPTION
Symbol Parameter Test Condition Min. Typ. Max. Unit
I
Total Maximum Current
dd
power supply @ 3.3V and Tj = 125°C
GENERAL INTERFACE ELECTRICAL CHARACTERISTICS
Symbol Parameter Test Condition Min. Typ. Max. Unit
l
Low Level Input Current without
il
pullup device
High Level Input Current without
l
ih
pullup device
I
latchup
V
Note: 1. The leakage currents are generally very small, <1nA. The value given here, 1mA, is the maximum that can occur after an Electro-
I/O latch-up current V < 0V, V > V
Electrostatic Protection Leakage , 1µA (note 2) 2000 V
esd
static Stress on the pi n.
2. Human Body Model.
Vi = 0V (note 1) 1 µA
Vi = Vdd (note 1) 1 µA
dd
3.15 3.3 3.45 V
3.15 3.3 3.45 V
21.5 25 mA
200 mA
LOW VOLTAGE CMOS INTERFACE DC ELECTRICAL CHARACTERISTICS
Symbol Parameter Test Condition Min. Typ. Max. Unit
V
Low Level Input Voltage
il
V
V
High Level Input Volta ge
ih
Schmitt trigger hysteresis 0.8 V
hyst
0.8*V
dd
0.2*V
V
dd
V
DAC ELECTRICAL CHARACTERISTICS
Vdd = 3.3V; Tamb = 25°C; Input signal frequency = sinus wave generated by Audio Precision Sys.2; Input
Signal Amplitude = see notes; Noise Integration Bandwidth = 20Hz to 22KHz (A- weighted)
Parameter Test Condition Min. Typ. Max. Unit
Noise + Distortion
(see note 1)
Total Harmonic Distortion see note 2 94 dB
Dynamic range see note 3 96 dB
Crosstalk see note 4 -95 dB
Full Scale Output Voltage V
Input Sampling Rate 36 48 kHz
@0dB
@-6dBb
@-40dB
@-60dB
= 3.15 to 3.45V
dd
Full scale input
89
94
96
96
dB
dB
dB
dB
0.8 0.9 1.0 Vrms
3/9
Loading...