LF2272 LODEV | Alldatasheet

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Corrector (3 x 12-bits) 08/16/2000–LDS.2272-I1 Video Imaging Products LF2272 Colorspace Converter/ Corrector (3 x 12-bits)DEVICES INCORPORATED FEATURES DESCRIPTION The LF2272 is a high-speed digital colorspace converter/corrector consisting of three simultaneous 12-bit input and output channels for func- tionality up to 64 Giga (2 36) colors. Some of the applications the LF2272 can be used for include phosphor colorimetry correction, image captur- ing and manipulation, composite color encoding/decoding, color matching, and composite color standards conversion/transcoding. The 3 x 3 matrix multiplier (triple dot product) allows users to easily per- form three-dimensional perspective translations or video format conver- sions at real-time video rates. By using the LF2272, conversions can be made from the RGB (color compo- nent) format to the YIQ (quadrature encoded chrominance) or YUV (color difference) formats and vice versa (YIQ or YUV to RGB). Differing signal formats in each stage of a system can be disregarded. For example, using an LF2272 at each format interface allows each stage of a system to operate on the data while in the appropriate format. All inputs and outputs, as well as all control lines, are registered on the rising edge of clock. The LF2272 operates at clock rates up to 50 MHz over the full commercial temperature and supply voltage ranges. A nar- rower data path can be used to allow the LF2272 to work with many different imaging applications. DETAILS OF OPERATION All three input ports (A, B, C) and all three output ports (X, Y, Z) are utilized to implement a 3 x 3 matrix multiplication (triple dot product). Each truncated 12-bit output is the sum of all three input words multi- plied by the appropriate coefficients (Table 1). The pipeline latency is five clock cycles. Therefore, the sum of ❑❑❑❑❑ 50 MHz Data and Computation Rate ❑❑❑❑❑ Full Precision Internal Calculations with Output Rounding ❑❑❑❑❑ On-board 10-bit Coefficient Storage ❑❑❑❑❑ Overflow Capability in Low Resolution Applications ❑❑❑❑❑ Two’s Complement Input and Output Data Format ❑❑❑❑❑ 3 Simultaneous 12-bit Channels (64 Giga Colors)

  • Component Color Standards Translations (RGB, YIQ, YUV)
  • Color-Temperature Conversion
  • Image Capturing and Manipulation
  • Composite Color Encoding/ Decoding
  • Three-Dimensional Perspective Translation ❑❑❑❑❑ Replaces TRW/Raytheon/Fairchild TMC2272 LF2272 BLOCK DIAGRAM 9-MULTIPLIER ARRAY A11-0 B11-0 C 11-0 KA 9-0 KB 9-0 KC 9-0 DATA INPUTS COEFFICIENT INPUTS X11-0 Y11-0 Z11-0 DATA OUTPUTS CLK CWEL 1-0

TABLE 2. COEFFICIENT INPUTS

00 Hold All Registers

01 KA1, KB1, KC1

10 KA2, KB2, KC2

11 KA3, KB3, KC3

TABLE 3. COEFF . REG . UPDATE (Table 3) on the next clock cycle.

FIGURE 2. DETAILED FUNCTIONAL DIAGRAM

Corrector (3 x 12-bits) 08/16/2000–LDS.2272-I5 Video Imaging Products Symbol Parameter Test Condition Min Typ Max Unit VOH Output High Voltage Vcc = Min., IOH = –2.0 mA 2.4 V VOL Output Low Voltage Vcc = Min., IOL = 4.0 mA 0.4 V VIH Input High Voltage 2.0 VCC V VIL Input Low Voltage (Note 3) 0.0 0.8 V IIX Input Current Ground ≤ VIN ≤ VCC (Note 12) ±10 µA IOZ Output Leakage Current (Note 12) ±40 µA ICC1 VCC Current, Dynamic (Notes 5, 6) 160 mA ICC2 VCC Current, Quiescent (Note 7) 12 mA C IN Input Capacitance TA = 25°C, f = 1 MHz 10 pF C OUT Output Capacitance TA = 25°C, f = 1 MHz 10 pF M AXIMUM RATINGS Above which useful life may be impaired (Notes 1, 2, 3, 8) O PERATING CONDITIONS To meet specified electrical and switching characteristics ELECTRICAL CHARACTERISTICS Over Operating Conditions (Note 4) Mode Temperature Range (Ambient) Supply Voltage Active Operation, Commercial 0°C to +70°C 4.75 V ≤ VCC ≤ 5.25 V Active Operation, Military –55°C to +125°C 4.50 V ≤ VCC ≤ 5.50 V

Corrector (3 x 12-bits) Video Imaging Products 08/16/2000–LDS.2272-I6 1234567890123456789012345678901212 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1 23456789012345678901234567890121 2 1234567890123456789012345678901212 123456789012345678 1 2345678901234567 8 1 2345678901234567 8 1 2345678901234567 8 1 2345678901234567 8 1 2345678901234567 8 1 2345678901234567 8 1 2345678901234567 8 1 2345678901234567 8 1 2345678901234567 8 1 2345678901234567 8 1 2345678901234567 8 1 2345678901234567 8 1 2345678901234567 8 1 2345678901234567 8 1 2345678901234567 8 1 2345678901234567 8 1 2345678901234567 8 1 2345678901234567 8 1 2345678901234567 8 1 2345678901234567 8 1 2345678901234567 8 1 2345678901234567 8 1 2345678901234567 8 123456789012345678 SWITCHING CHARACTERISTICS LF2272– 33* 25* Symbol Parameter Min Max Min Max tCYC Cycle Time 33 25 tPWL Clock Pulse Width Low 15 10 tPWH Clock Pulse Width High 10 10 tS Input Setup Time 12 9 tH Input Hold Time 0 0 tD Output Delay 25 20 M ILITARY OPERATING RANGE (–55°C to +125°C) Notes 9, 10 (ns) LF2272– 33* 25 20 Symbol Parameter Min Max Min Max Min Max tCYC Cycle Time 33 25 20 tPWL Clock Pulse Width Low 15 10 6 tPWH Clock Pulse Width High 10 10 8 tS Input Setup Time 8 6 6 tH Input Hold Time 0 0 0 tD Output Delay 18 16 15 C OMMERCIAL OPERATING RANGE (0°C to +70°C) Notes 9, 10 (ns) 123456789012345678901234 1 2345678901234567890123 4 123456789012345678901234 *DISCONTINUED SPEED GRADE SWITCHING WAVEFORM CLK CWEL 1-0 KA, KB, KC A, B, C 1234 678 X11-0 Y11-0 Z11-0 01 10 11 00 Kx1 Kx2 Kx3 00 1 . 0 000 KA2 + KB2 + KC2 KA1 + KB1 + KC1 KA3 + KB3 + KC3 tPWH tPWLtS tH tD

Corrector (3 x 12-bits) 08/16/2000–LDS.2272-I7 Video Imaging Products 1. Maximum Ratings indicate stress specifications only. Functional oper- ation of these products at values beyond those indicated in the Operating Condi- tions table is not implied. Exposure to maximum rating conditions for ex- tended periods may affect reliability. 2. The products described by this spec- ification include internal circuitry de- signed to protect the chip from damag- ing substrate injection currents and ac- cumulations of static charge. Neverthe- less, conventional precautions should be observed during storage, handling, and use of these circuits in order to avoid exposure to excessive electrical stress values. 3. This device provides hard clamping of transient undershoot and overshoot. In- put levels below ground or above V CC will be clamped beginning at –0.6 V and VCC + 0.6 V. The device can withstand indefinite operation with inputs in the range of –0.5 V to +7.0 V. Device opera- tion will not be adversely affected, how- ever, input current levels will be well in excess of 100 mA. 4. Actual test conditions may vary from those designated but operation is guar- anteed as specified. 5. Supply current for a given applica- tion can be accurately approximated by: where N = total number of device outputs C = capacitive load per output V = supply voltage F = clock frequency 6. Tested with all outputs changing ev- ery cycle and no load, at a 20 MHz clock rate. 7. Tested with all inputs within 0.1 V of V CC or Ground, no load. 8. These parameters are guaranteed but not 100% tested. NCV F NOTES 9. AC specifications are tested with input transition times less than 3 ns, output reference levels of 1.5 V (except t DIS test), and input levels of nominally 0 to 3.0 V. Output loading may be a resistive divider which provides for specified IOH and IOL at an output voltage of VOH min and VOL max respectively. Alternatively, a diode bridge with upper and lower current sources of IOH and IOL respectively, and a balancing voltage of 1.5 V may be used. Parasitic capacitance is 30 pF minimum, and may be distributed. This device has high-speed outputs ca- pable of large instantaneous current pulses and fast turn-on/turn-off times. As a result, care must be exercised in the testing of this device. The following measures are recommended: a. A 0.1 µF ceramic capacitor should be installed between V CC and Ground leads as close to the Device Under Test (DUT) as possible. Similar capacitors should be installed between device VCC and the tester common, and device ground and tester common. b. Ground and VCC supply planes must be brought directly to the DUT socket or contactor fingers. c. Input voltages should be adjusted to compensate for inductive ground and VCC noise to maintain required DUT input levels relative to the DUT ground pin. 10. Each parameter is shown as a min- imum or maximum value. Input re- quirements are specified from the point of view of the external system driving the chip. Setup time, for example, is specified as a minimum since the exter- nal system must supply at least that much time to meet the worst-case re- quirements of all parts. Responses from the internal circuitry are specified from the point of view of the device. Output delay, for example, is specified as a maximum since worst-case operation of any device always provides data within that time. 11. For the t ENA test, the transition is measured to the 1.5 V crossing point with datasheet loads. For the tDIS test, the transition is measured to the ±200mV level from the measured steady-state output voltage with ±10mA loads. The balancing volt- age, V TH, is set at 3.5 V for Z-to-0 and 0-to-Z tests, and set at 0 V for Z- to-1 and 1-to-Z tests. 12. These parameters are only tested at the high temperature extreme, which is the worst case for leakage current. OE 0.2 V tDIStENA 0.2 V 1.5 V 1.5 V 3.0V Vth 1 Z 0 Z Z 1 Z 0 1.5 V 1.5 V 0V Vth VOL * VOH * VOL * VOH * Measured VOL with IOH = –10mA and IOL = 10mA Measured VOH with IOH = –10mA and IOL = 10mA IOH IOL VTHC L DUT FIGURE B. THRESHOLD LEVELS FIGURE A. OUTPUT LOADING CIRCUIT

Corrector (3 x 12-bits) Video Imaging Products 08/16/2000–LDS.2272-I8 0°C to +70°C — COMMERCIAL SCREENING 120-pin

ORDERING INFORMATION

(Q1) LF2272QC25 LF2272QC20 GND Y11 Y10 VCC GND VCC GND VCC X10 X11 GND GND GND C C 10 C 9 C 8 C 7 GND C C 5 C 4 VCC C 3 C 2 C 1 C 0 B11 B10 CLK B A11 A10 GND CWE CWE 1 KA 9 KA 8 KA 7 KA 6 KA 5 KA 4 KA 3 KA 2 KA 1 GND Z10 Z11 KC 0 KC 1 KC 2 KC 3 GND KC 4 KC 5 KC 6 VCC KC 7 KC 8 KC 9 KB 0 KB 1 KB 2 KB 3 KB 4 KB 5 KB 6 KB 7 KB 8 KB 9 KA 0 Top View 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 –40°C to +85°C — COMMERCIAL SCREENING

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120-pin (G4) A B C D E F G H J K L M N Top View Through Package (i.e., Component Side Pinout) 12345 6 7 8 9 10 11 Y10 X10 GND VCC GND VCC GND Z10 GND X11 VCC GND Z11 KC 1 C 11 GND GND KC KC 2 KC 3 C 8 C 9 C 10 GND KC 4 KC 5 C 7 C 6 GND VCC KC 6 KC 7 C 5 C 4 VCC KB 0 KC 9 KC 8 C 3 C 2 C 0 KB 4 KB 2 KB 1 C 1 B11 KB 8 KB 5 KB 3 KEY 12 13 Y11 B10 CLK A11 GND KA 8 KA 4 KA 1 KB 9 KB 6 CWEL 1 KA 7 KA 5 KA 2 KB 7 A10 CWEL 0 KA 9 KA 6 KA 3 KA 0 0°C to +70°C — COMMERCIAL SCREENING –55°C to +125°C — MIL-STD-883 COMPLIANT –55°C to +125°C — COMMERCIAL SCREENING Discontinued Package