INTEGRATED CIRCUITS
DATA SHEET
TDA8714
8-bit high-speed analog-to-digital
converter
Product specification
Supersedes data of 1996 Jan 31
File under Integrated Circuits, IC02
1997 Oct 29
Philips Semiconductors
Product specification
8-bit high-speed analog-to-digital converter
FEATURES
•
8-bit resolution
•
Sampling rate up to 80 MHz
•
No missing codes guaranteed
•
High signal-to-noise ratio over a large analog input
frequency range (7.7 effective bits at 4.43 MHz
full-scale input at f
clk
= 80 MHz)
•
Overflow/underflow 3-state TTL output
•
TTL compatible digital inputs
•
Low-level AC clock input signal allowed
•
External reference voltage regulator
•
Power dissipation only 340 mW (typical)
•
Low analog input capacitance, no buffer amplifier
required
•
No sample-and-hold circuit required.
APPLICATIONS
TDA8714
High-speed analog-to-digital conversion for:
•
video data digitizing
•
radar pulse analysis
•
transient signal analysis
•
high energy physics research
• Σ∆
modulators
•
medical imaging.
GENERAL DESCRIPTION
The TDA8714 is an 8-bit high-speed Analog-to-Digital
Converter (ADC) for professional video and other
applications. It converts the analog input signal into 8-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
SYMBOL
V
CCA
V
CCD
V
CCO
I
CCA
I
CCD
I
CCO
INL
DNL
AINL
f
clk(max)
PARAMETER
analog supply voltage
digital supply voltage
output stages supply voltage
analog supply current
digital supply current
output stages supply current
DC integral non-linearity
DC differential non-linearity
AC integral non-linearity
maximum clock frequency
TDA8714/7
TDA8714/6
TDA8714/4
P
tot
Note
1. Full-scale sine wave (f
i
= 4.43 MHz; f
clk
= 80 MHz).
total power dissipation
80
60
40
−
−
−
−
340
−
−
−
435
MHz
MHz
MHz
mW
note 1
CONDITIONS
MIN.
4.75
4.75
4.75
−
−
−
−
−
−
TYP.
5.0
5.0
5.0
25
27
16
±0.4
±0.2
±0.5
MAX.
5.25
5.25
5.25
30
33
20
±0.5
±0.35
±1.0
V
V
V
mA
mA
mA
LSB
LSB
LSB
UNIT
1997 Oct 29
2
Philips Semiconductors
Product specification
8-bit high-speed analog-to-digital converter
ORDERING INFORMATION
TYPE
NUMBER
TDA8714T/4
TDA8714T/6
TDA8714T/7
TDA8714M/4
TDA8714M/6
TDA8714M/7
PACKAGE
NAME
SO24
SO24
SO24
SSOP24
SSOP24
SSOP24
plastic shrink small outline package; 24 leads;
body width 5.3 mm
DESCRIPTION
plastic small outline package; 24 leads;
body width 7.5 mm
VERSION
SOT137-1
SOT137-1
SOT137-1
SOT340-1
SOT340-1
SOT340-1
TDA8714
SAMPLING
FREQUENCY (MHz)
40
60
80
40
60
80
BLOCK DIAGRAM
handbook, full pagewidth
V CCA
7
CLK
16
VCCD
18
CE
22
CLOCK DRIVER
VRT
9
TDA8714
12 D7
13 D6
14 D5
MSB
analog
voltage input
VI
15 D4
8
ANALOG -TO-DIGITAL
CONVERTER
LATCHES
TTL OUTPUTS
23 D3
24 D2
1 D1
2 D0
LSB
data outputs
VRB 4
19
VCCO1
21 VCCO2
OGND 20
output ground
6
AGND
analog ground
17
DGND
digital ground
MSA669
OVERFLOW / UNDERFLOW
LATCH
TTL OUTPUT
11
overflow / underflow
output
Fig.1 Block diagram.
1997 Oct 29
3
Philips Semiconductors
Product specification
8-bit high-speed analog-to-digital converter
PINNING
SYMBOL
D1
D0
n.c.
V
RB
n.c.
AGND
V
CCA
V
I
V
RT
n.c.
O/UF
D7
D6
D5
D4
CLK
DGND
V
CCD
V
CCO1
OGND
V
CCO2
CE
D3
D2
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
DESCRIPTION
data output; bit 1
data output; bit 0 (LSB)
not connected
reference voltage BOTTOM input
not connected
analog ground
analog supply voltage (+5 V)
analog input voltage
reference voltage TOP input
not connected
overflow/underflow data output
data output; bit 7 (MSB)
data output; bit 6
data output; bit 5
data output; bit 4
clock input
digital ground
digital supply voltage (+5 V)
supply voltage for output stages 1
(+5 V)
output ground
supply voltage for output stages 2
(+5 V)
chip enable input (TTL level input,
active LOW)
data output; bit 3
data output; bit 2
Fig.2 Pin configuration.
handbook, halfpage
TDA8714
D1 1
D0 2
n.c. 3
VRB 4
n.c. 5
AGND
6
TDA8714
VCCA 7
VI 8
VRT 9
n.c. 10
O/UF 11
D7 12
MSA667
24 D2
23 D3
22 CE
21 VCCO2
20 OGND
19 VCCO1
18 VCCD
17 DGND
16 CLK
15 D4
14 D5
13 D6
1997 Oct 29
4
Philips Semiconductors
Product specification
8-bit high-speed analog-to-digital converter
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
V
CCA
V
CCD
V
CCO
∆V
CC
∆V
CC
∆V
CC
V
I
V
clk(p-p)
I
O
T
stg
T
amb
T
j
Note
PARAMETER
analog supply voltage
digital supply voltage
output stages supply voltage
supply voltage differences between
V
CCA
and V
CCD
supply voltage differences between
V
CCO
and V
CCD
supply voltage differences between
V
CCA
and V
CCO
input voltage
AC input voltage for switching
(peak-to-peak value)
output current
storage temperature
operating ambient temperature
junction temperature
referenced to AGND
referenced to DGND
CONDITIONS
note 1
note 1
note 1
MIN.
−0.3
−0.3
−0.3
−1.0
−1.0
−1.0
−0.3
−
−
−55
0
−
TDA8714
MAX.
+7.0
+7.0
+7.0
+1.0
+1.0
+1.0
+7.0
V
CCD
10
+150
+70
+150
V
V
V
V
V
V
V
V
UNIT
mA
°C
°C
°C
1. The supply voltages V
CCA
and V
CCD
may have any value between
−0.3
V and +7.0 V provided the difference
between V
CCA
and V
CCD
is between
−1
V and +1 V.
HANDLING
Inputs and outputs are protected against electrostatic discharges in normal handling. However, to be totally safe, it is
desirable to take normal precautions appropriate to handling integrated circuits.
THERMAL CHARACTERISTICS
SYMBOL
R
th j-a
SOT137-1
SOT340-1
PARAMETER
thermal resistance from junction to ambient in free air
75
119
K/W
K/W
VALUE
UNIT
1997 Oct 29
5
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