INTEGRATED CIRCUITS
DATA SHEET
TDA8762
10-bit high-speed low-power
analog-to-digital converter
Product specification
Supersedes data of 1995 Feb 15
File under Integrated Circuits, IC02
1996 Mar 28
Philips Semiconductors
Product specification
10-bit high-speed low-power
analog-to-digital converter
FEATURES
•
10-bit resolution
•
Sampling rate up to 40 MHz
•
DC sampling allowed
•
One clock cycle conversion only
•
High signal-to-noise ratio over a large analog input
frequency range (9.4 effective bits at 4.43 MHz full-scale
input at f
clk
= 40 MHz)
•
No missing codes guaranteed
•
In range (IR) TTL output
•
TTL compatible digital inputs and outputs
•
Low-level AC clock input signal allowed
•
External reference voltage regulator
•
Power dissipation only 380 mW (typical)
•
Low analog input capacitance, no buffer amplifier
required
•
No sample-and-hold circuit required.
QUICK REFERENCE DATA
SYMBOL
V
CCA
V
CCD
V
CCO
I
CCA
I
CCD
I
CCO
INL
DNL
f
clk(max)
P
tot
PARAMETER
analog supply voltage
digital supply voltage
output stages supply voltage
analog supply current
digital supply current
output stages supply current
integral non-linearity
differential non-linearity
maximum clock frequency
total power dissipation
f
clk
= 40 MHz;
ramp input
f
clk
= 40 MHz;
ramp input
CONDITIONS
MIN.
4.75
4.75
4.4
−
−
−
−
−
40
−
TYP.
5.0
5.0
5.0
29
24
23
±0.75
±0.3
−
380
APPLICATIONS
TDA8762
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 TDA8762 is a 10-bit high-speed analog-to-digital
converter (ADC) for professional video and other
applications. It converts the analog input signal into 10-bit
binary-coded digital words at a maximum sampling rate of
40 MHz. All digital inputs and outputs are TTL compatible,
although a low-level sine wave clock input signal is
allowed.
MAX.
5.25
5.25
5.25
36
30
30
±1.5
±0.7
−
500
V
V
V
UNIT
mA
mA
mA
LSB
LSB
MHz
mW
ORDERING INFORMATION
TYPE
NUMBER
TDA8762M/4
PACKAGE
NAME
SSOP28
DESCRIPTION
plastic shrink small outline package;
28 leads; body width 5.3 mm
VERSION
SOT341-1
SAMPLING
FREQUENCY (MHz)
40
1996 Mar 28
2
Philips Semiconductors
Product specification
10-bit high-speed low-power
analog-to-digital converter
BLOCK DIAGRAM
TDA8762
handbook, full pagewidth
V CCA
3
CLK
1
VCCD
11
OE
10
CLOCK DRIVER
VRT
2
TC
TDA8762
9
25 D9
24 D8
23 D7
RLAD
22 D6
21 D5
8
ANALOG -TO - DIGITAL
CONVERTER
LATCHES
TTL OUTPUTS
20 D4
19 D3
7
18 D2
17 D1
16 D0
LSB
data outputs
MSB
analog
voltage input
VI
VRM
VRB 6
13
VCCO1
28 VCCO2
IN RANGE LATCH
TTL OUTPUT
26
IR
output
4
AGND1
5
AGND2
12
DGND
14
OGND1
27
OGND2
MGC035
analog grounds
digital ground
output grounds
Fig.1 Block diagram.
1996 Mar 28
3
Philips Semiconductors
Product specification
10-bit high-speed low-power
analog-to-digital converter
PINNING
SYMBOL
CLK
TC
V
CCA
AGND1
AGND2
V
RB
V
RM
V
I
V
RT
OE
V
CCD
DGND
V
CCO1
OGND1
n.c.
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
IR
OGND2
V
CCO2
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
25
26
27
28
clock input
two’s complement input (active LOW)
analog supply voltage (+5 V)
analog ground 1
analog ground 2
reference voltage BOTTOM input
reference voltage MIDDLE
analog input voltage
reference voltage TOP input
output enable input
(TTL level input, active LOW)
digital supply voltage (+5 V)
digital ground
supply voltage for output stages 1
(+5 V)
output ground 1
not connected
data output; bit 0 (LSB)
data output; bit 1
data output; bit 2
data output; bit 3
data output; bit 4
data output; bit 5
data output; bit 6
data output; bit 7
data output; bit 8
data output; bit 9 (MSB)
in range data output
output ground 2
supply voltage for output stages 2
(+5 V)
Fig.2 Pin configuration.
handbook, halfpage
TDA8762
DESCRIPTION
CLK
TC
VCCA
AGND1
AGND2
VRB
VRM
VI
VRT
1
2
3
4
5
6
7
28 VCCO2
27 OGND2
26 IR
25 D9
24 D8
23 D7
22 D6
TDA8762
8
9
21 D5
20 D4
19 D3
18 D2
17 D1
16 D0
15 n.c.
MGC036
OE 10
VCCD 11
DGND 12
V CCO1 13
OGND1 14
1996 Mar 28
4
Philips Semiconductors
Product specification
10-bit high-speed low-power
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
PARAMETER
analog supply voltage
digital supply voltage
output stages supply voltage
supply voltage difference
V
CCA
−
V
CCD
V
CCA
−
V
CCO
V
CCD
−
V
CCO
V
I
V
clk(p-p)
I
O
T
stg
T
amb
T
j
Note
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
−1.0
−1.0
−1.0
−0.3
−
−
−55
0
−
+1.0
+1.0
+1.0
+7.0
CONDITIONS
note 1
note 1
note 1
MIN.
−0.3
−0.3
−0.3
TDA8762
MAX.
+7.0
+7.0
+7.0
V
V
V
V
V
V
V
V
UNIT
V
CCD
10
+150
+70
+150
mA
°C
°C
°C
1. The supply voltages V
CCA
, V
CCD
and V
CCO
may have any value between
−0.3
V and +7.0 V provided that the supply
voltage differences
∆V
CC
are respected.
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
PARAMETER
thermal resistance from junction to ambient in free air
VALUE
110
UNIT
K/W
1996 Mar 28
5
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