參數(shù)資料
型號(hào): TDA8705A
廠商: NXP Semiconductors N.V.
英文描述: 6-bit high-speed dual Analog-to-Digital Converter ADC
中文描述: 6位高速雙模擬到數(shù)字轉(zhuǎn)換器模數(shù)轉(zhuǎn)換器
文件頁(yè)數(shù): 2/16頁(yè)
文件大小: 111K
代理商: TDA8705A
1996 Jan 12
2
Philips Semiconductors
Product specification
6-bit high-speed dual Analog-to-Digital
Converter (ADC)
TDA8705A
FEATURES
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
clk
= 80 MHz)
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.
APPLICATIONS
High-speed analog-to-digital conversion for:
DBS (Digital Broadcast Satellite)
QPSK (Quadrature Phase Shift Keying) demodulation
Video.
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.
QUICK REFERENCE DATA
Note
1.
Full-scale sine wave (f
i
= 20 MHz; f
clk
= 80 MHz).
ORDERING INFORMATION
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
CCA
V
CCD
V
CCO
I
CCA
I
CCD
I
CCO
ILE
DLE
AILE
f
clk(max)
P
tot
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
4.75
4.75
4.75
20
10
10
80
5.0
5.0
5.0
27
14
14
±
0.25
±
0.25
±
0.5
250
5.25
5.25
5.25
32
18
18
±
0.5
±
0.5
±
1.0
V
V
V
mA
mA
mA
LSB
LSB
LSB
MHz
mW
note 1
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TDA8705AT
SO28
plastic small outline package; 28 leads; body width 7.5 mm
SOT136-1
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