TDA8768 Ver la hoja de datos (PDF) - Philips Electronics
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TDA8768 Datasheet PDF : 20 Pages
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Philips Semiconductors
12-bit high-speed Analog-to-Digital
Converter (ADC)
Preliminary specification
TDA8768
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP. MAX.
Voltage controlled regulator input Vref (referenced to AGND); note 2
Vref(FS)
full-scale fixed voltage
VCCA = 5 V
−
Iref
input current
−
VI(p-p) − VI(p-p) input voltage amplitude
Vref = VCCA − 1.825 V
−
(peak-to-peak value)
3.175 −
0.5 10
2.0 −
Outputs (referenced to OGND)
DIGITAL OUTPUTS D11 TO D0 AND IR (REFERENCED TO OGND)
VOL
LOW-level output voltage
IOL = 2 mA
VOH
HIGH-level output voltage IOH = −0.4 mA
Io
output current in 3-state
output level between 0.5 V
and VCCO
Switching characteristics
0
−
VCCO − 0.5 −
−20
−
0.5
VCCO
+20
CLOCK FREQUENCY fCLK; see Fig.3
fCLK(min)
fCLK(max)
minimum clock frequency
maximum clock frequency
TDA8768H/4
TDA8768H/5
tCLKH
tCLKL
clock pulse width HIGH
clock pulse width LOW
SH = HIGH
−
−
2
40
−
−
55
−
−
8.5
−
−
8.5
−
−
Analog signal processing; 50% clock duty factor; VI − VI = 2.0 V; Vref = VCCA − 1.825 V; see Table 1
LINEARITY
INL
DNL
Eoffset
integral non-linearity
differential non-linearity
offset error
EG(FS)
gain error amplitude
(full scale); spread from
device to device
BANDWIDTH (fCLK = 55 MHz); note 3
B
analog bandwidth
fCLK = 4 MHz; fi = 400 kHz −
fCLK = 4 MHz; fi = 400 kHz; −
no missing code
VCCA = VCCD = VCCO = 5 V; tbf
Tamb = 25 °C; VI = VI;
output code = 2047
VCCA = VCCD = VCCO = 5 V; −5
Tamb = 25 °C;
VI(p-p) − VI(p-p) = 2.0 V
−3 dB; full scale input
tbf
±2.0 ±4.5
±0.6 ±1.0
−11 tbf
−
+5
190 −
HARMONICS (fCLK = 40 MHz)
hfund(FS)
fundamental harmonics
fi = 4.43 MHz
−
(full scale)
htot(FS)
harmonics (full scale);
all components
fi = 4.43 MHz
second harmonic
−
third harmonic
−
THD
total harmonic distortion
fi = 4.43 MHz; note 4
−
−
0
−75 −
−70 −
−66 −
UNIT
V
µA
V
V
V
µA
MHz
MHz
MHz
ns
ns
LSB
LSB
mV
%
MHz
dB
dB
dB
dB
1998 Aug 26
8
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