tda8705at NXP Semiconductors, tda8705at Datasheet - Page 2

• Manufacturer Part Number: tda8705at
• Description: 6-bit High-speed Dual Analog-to-digital Converter Adc
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FEATURES
QUICK REFERENCE DATA
Note
1. Full-scale sine wave (f
ORDERING INFORMATION
1996 Jan 12
V
V
V
I
I
I
ILE
DLE
AILE
f
P
CCA
CCD
CCO
clk(max)
2 times 6-bit resolution
Sampling rate up to 80 MHz
High signal-to-noise ratio over a large analog input
frequency range (5.5 effective bits at 20 MHz full-scale
input at f
TTL output
Two separated inputs (AC-coupling)
TTL compatible digital inputs
Low-level AC clock input signal allowed
Internal reference voltage regulator
(external reference regulation possible)
Power dissipation only 250 mW (typical)
Low analog input capacitance, no buffer amplifier
required
No sample-and-hold circuit required.
CCA
CCD
CCO
tot
TDA8705AT
6-bit high-speed dual Analog-to-Digital
Converter (ADC)
SYMBOL
NUMBER
TYPE
clk
= 80 MHz)
analog supply voltage
digital supply voltage
output stages supply voltage
analog supply current
digital supply current
output stages supply current
DC integral linear error
DC differential linearity error
AC integral linearity error
maximum clock frequency
total power dissipation
NAME
SO28
i
= 20 MHz; f
PARAMETER
plastic small outline package; 28 leads; body width 7.5 mm
clk
= 80 MHz).
note 1
CONDITIONS
DESCRIPTION
2
APPLICATIONS
High-speed analog-to-digital conversion for:
GENERAL DESCRIPTION
The TDA8705A is a 6-bit high-speed dual analog-to-digital
converter (ADC) for satellite video and other applications.
It converts the two analog input signals into two 6-bit
binary-coded digital words at a maximum sampling rate of
80 MHz. All digital inputs and outputs are TTL compatible,
although a low-level sine wave clock input signal is
allowed.
PACKAGE
DBS (Digital Broadcast Satellite)
QPSK (Quadrature Phase Shift Keying) demodulation
Video.
4.75
4.75
4.75
20
10
10
80
MIN.
5.0
5.0
5.0
27
14
14
250
0.25
0.25
0.5
TYP.
5.25
5.25
5.25
32
18
18
Product specification
0.5
0.5
1.0
MAX.
TDA8705A
SOT136-1
VERSION
V
V
V
mA
mA
mA
LSB
LSB
LSB
MHz
mW
UNIT