Datasheet SPT9400SCR Datasheet (SPT)

SPT9400

TRIPLE VIDEO DRIVER WITH Y/C & COMPOSITE OUTPUT

FEATURES

• Triple Video Line Driver Chip With Y/C Inputs

• Composite and Y/C Outputs

•RL = 150 Ω (75 Ω Back-Terminated Cable)

• Internal Clamping and Bias Circuitry

• Power-Down Standby Mode

• Very Small 5.0 x 4.4 mm Package

• Low Power Dissipation: 168 mW

•1 V

Input Range

P-P

• 6 dB Voltage Gain

• Flat Response fIN = 100 kHz to 10 MHz (typical)

• Crosstalk -40 dB (Typical)

• Single +5 Volt Power Supply

GENERAL DESCRIPTION

The SPT9400 is a triple video line driver chip that takes
standard Y/C analog inputs and provides simultaneous Y/C
and composite video analog outputs for driving 75 Ω lines.
Internal summing of the Y and C inputs is performed to
produce composite video output. It is possible to achieve
composite output on both the Y and CVBS outputs simulta­neously by inputting a composite signal on the Y input. The
luminance input is clamped at 1.25 V and amplified 6 dB to
produce a 2 V

(typical) into a series 75 Ω resistor and 75 Ω

P-P

APPLICATIONS

• Video Editing Equipment

• Video Capture/Playback Cards

• Video Tape Recorders

• TV Monitor Sources

• Multimedia PCs

cable load. The internal 1.5 kΩ resistor provides gain com­pensation for low frequency signals. The chrominance input
is biased at 2.0 V and amplified 6 dB to produce a 1.2 V
(typical), into a series 75 Ω resistor and 75 Ω cable load.

The SPT9400 features a standby (active low) mode that
draws only 113 µW of power. Nominal power dissipation (no
input) is typically 168 mW. It requires a single +5 V supply,
operates over the commercial temperature range (0 to +70 °C)
and is available in a very small (5.0 x 4.4 mm) 12-lead Shrink
Small Outline Package (SSOP).

P-P

BLOCK DIAGRAM

Signal Processing Technologies, Inc.

+V

CC

Y Input Y Output

Clamp

1.25 V

Reference

Standby

C Input C Output

+

Standby

Logic

Bias

2.0 V

Clamp

1.25 V

GND

Driver

5 kΩ 5 kΩ

Driver

5 kΩ 5 kΩ

Driver

1.5 kΩ

Y Feedback

CVBS Output

1.5 kΩ
CVBS Feedback

4755 Forge Road, Colorado Springs, Colorado 80907, USA

Phone: [phone] FAX: [phone]

ABSOLUTE MAXIMUM RATINGS (Beyond which damage may occur)

(1)

25 °C

Supply Voltages

VCC.......................................................................+6.0 V

Maximum Power Dissipation

P

....................................................................................

D

350 mW

Temperature

Operating Temperature ................................. 0 to +70 °C

Storage Temperature................................-55 to +150 °C

Thermal Impedance (TA=+25 °C and above)

Θ

............................................................................

CA

2.8 mW/°C

Note: 1. Operation at any Absolute Maximum Rating is not implied. See Electrical Specifications for proper nominal

applied conditions in typical applications.

ELECTRICAL SPECIFICATIONS

TA = +25 °C, V

PARAMETERS CONDITIONS LEVEL MIN TYP MAX UNITS

Power Supply

Supply Current (ICC) No Input I 33.5 45 mA
V

Voltage IV 4.5 5.0 5.5 V

CC

Power Dissipation I 168 225 mW
Standby Current Pin 5 Grounded I 22.5 50 µA
Standby Power Dissipation Pin 5 Grounded I 113 µW

Digital Input

Digital Input (Low) Standby Pin 5 I 0.0 0.1 0.3 V
Digital Input (High) Standby Pin 5 I 1.8 2.0 V

Bias Voltages

Clamp Voltage Y Input Pin 2 I 1.05 1.25 1.45 V
Bias Voltage C Input Pin 6 I 1.7 2.0 2.3 V

Dynamic Performance

Voltage Gain I 5.5 6.0 6.5 dB
Differential Gain Ramp Input 3.58 MHz I -3.0 -1.5 +3.0 %
Differential Phase Ramp Input 3.58 MHz I -3.0 +0.2 +3.0 Degrees
Frequency Response f
Cross Talk Y

= +5.0 V, VIN = 1.0 V

CC

video signal, RL = 150 Ω, unless otherwise specified.

P-P

TEST TEST SPT9400

= 1 to 5 MHz V 0.0 dB

IN

to C

IN

CIN to Y

OUT
OUT

V -40 dB
V -40 dB

CC

V

TEST LEVEL CODES

All electrical characteristics are subject to the following
conditions:

All parameters having min/max specifications are guar­anteed. The Test Level column indicates the specific
device testing actually performed during production and
Quality Assurance inspection. Any blank section in the
data column indicates that the specification is not tested
at the specified condition.

SPT

TEST LEVEL

I

II

III
IV

V

VI

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TEST PROCEDURE

100% production tested at the specified temperature.
100% production tested at TA = +25 °C, and sample tested

at the specified temperatures.
QA sample tested only at the specified temperatures.
Parameter is guaranteed (but not tested) by design and

characterization data.
Parameter is a typical value for information purposes only.
100% production tested at T

guaranteed over specified temperature range.

= +25 °C. Parameter is

A

SPT9400

Figure 1 - Typical Interface Circuit

VCC = 5.0 V

33 µF

+

.01 µF

Y Input

1.0 V

C Input

0.6 V

P-P

P-P

75 Ω

Standby

75 Ω

4.7 µF

4.7 µF

+

+

2

Clamp

1.25 V

Reference

5

Standby

6

+

Logic

Bias

2.0 V

Clamp

1.25 V

1

5 kΩ 5 kΩ

5 kΩ 5 kΩ

3,4,7

6 dB

6 dB

6 dB

12

1.5 kΩ
11

10

1.5 kΩ

9

8

+

33 µF

+

33 µF

+

33 µF

+

33 µF

+

10 µF

75 Ω 75 Ω Cable

Y Output

75 Ω

75 Ω 75 Ω Cable

CVBS Output

75 Ω

75 Ω 75 Ω Cable

C Output

75 Ω

SPT

SPT9400

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Figure 2 - CVBS Output (Multiburst Test)

Figure 3 - CVBS Output (DP/DG)

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SPT9400

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Figure 4 - CVBS Output (Vector Scope)

Figure 5 - CVBS Output (Bar and Line Time)

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SPT9400

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PACKAGE OUTLINE

12-Lead SSOP

INCHES MILLIMETERS

SYMBOL MIN MAX MIN MAX

A 0.165 0.181 4.2 4.6
B 0.189 0.205 4.8 5.2
C 0.012 typ 0.3 typ
D 0.031 typ 0.8 typ
E 0.000 0.008 0.0 0.2
F 0.047 0.063 1.2 1.6
G 0.067 max 1.7 max

A

B

FG

J

K

NM

L

H 0.264 0.248 6.7 6.3

I 0.004 0.010 0.10 0.25
J 0-10° 0-10°
K 0.012 0.028 0.3 0.7
L 0.047 typ 1.2 typ
M 0.016 typ 0.4 typ
N 0.031 typ 0.8 typ
O 0.213 typ 5.4 typ

C D

H

E

I

Suggested Pad La you t

O

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PIN ASSIGNMENTS

V

1

CC

Y

2

IN

GND

GND

Standby

3

4

5

C

6

IN

12

11

10

9

8

7

Y

OUT

Y

FB

CVBS

CVBS

C

OUT

GND

OUT

FB

PIN FUNCTIONS

Name Function
Y

IN

C

IN

Standby Power Down Standby Mode Select (Low =

Y

OUT

Y

FB

CVBS

OUT

CVBS

FB

C

OUT

V

CC

GND Ground

Luminance (Y) Signal Input (typically
1 V

, AC coupled)

P-P

Chrominance (C) Signal Input (typically

0.62 V

, AC coupled)

P-P

Standby, Internal Pull-Up)
Luminance (Y) Output (typically 2.0 V

P-P

RL = 150 Ω, AC coupled)
Luminance Feedback Pin
Composite Video (CVBS) Output (typically

2.0 V

, RL = 150 Ω, AC coupled)

P-P

Composite Video Feedback Pin
Chrominance (C) Output (typically 1.3 V

P-P

RL = 150 Ω, AC coupled)
+5.0 V Supply

,

,

ORDERING INFORMATION

PART NUMBER TEMPERATURE RANGE PACKAGE TYPE

SPT9400SCR 0 to +70°C 12-Lead SSOP

Signal Processing Technologies, Inc. reserves the right to change products and specifications without notice. Permission is hereby expressly
granted to copy this literature for informational purposes only. Copying this material for any other use is strictly prohibited.

WARNING - LIFE SUPPORT APPLICATIONS POLICY - SPT products should not be used within Life Support Systems without the specific
written consent of SPT. A Life Support System is a product or system intended to support or sustain life which, if it fails, can be reasonably
expected to result in significant personal injury or death.

Signal Processing Technologies believes that ultrasonic cleaning of its products may damage the wire bonding, leading to device
failure. It is therefore not recommended, and exposure of a device to such a process will void the product warranty.

SPT9400

SPT

7 8/24/98