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參數(shù)資料
| 型號： | GF9102ACTM |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Pin Strip Header; No. of Contacts:36; Pitch Spacing:0.1"; No. of Rows:1; Contact Material:Copper Alloy; Contact Plating:Gold; Leaded Process Compatible:Yes; Mounting Type:PCB Straight Thru Hole; Peak Reflow Compatible (260 C):No RoHS Compliant: Yes |
| 中文描述： | 元?dú)?內(nèi)插數(shù)字濾波器 |
| 文件頁數(shù)： | 1/11頁 |
| 文件大?。?/td> | 300K |
| 代理商： | GF9102ACTM |
DATA SHEET
DEVICE DESCRIPTION
The GF9102A is a linear phase FIR digital filter that is usable
in a variety of video signal processing applications. The device
contains three separate fixed coefficient filters and can be
operated in three basic modes: 53 tap low pass filter, 9 tap
chroma bandpass filter or 21 tap chroma bandpass filter.
In the 53 tap low pass filter mode, the GF9102A can replace the
TMC2242 in all applications, except those requiring 1:1 low
pass filtering, for improved performance and full CCIR 601
compatibility. Specific improvements include true unity gain at
DC, 12.4 dB attenuation at s/4 with a single device, reduced
output ringing with constant input in interpolate mode, support
for signed and unsigned data formats, rounding to 10 and 8 bit
CCIR 601 data formats, masking of serial digital TRS codes in
the data stream, and elimination of the non-saturated-type
overflow condition. The device can be operated in both
TMC2242 compatible modes and in GF9102A enhanced
modes.
When used as a decimating post-filter with a double speed
oversampling analog-digital converter, the device greatly
reduces the cost and complexity of the associated analog
anti-aliasing pre-filter. In a similar fashion, when used as an
interpolating pre-filter with a double speed oversampling digital-
analog converter, the GF9102A simplifies the analog
reconstruction post-filter. The GF9102A also exceeds the
requirements for conversion between 4:2:2 and 4:4:4 signal
formats.
For chroma filtering applications, the GF9102A can be operated
as a 9 or 21 tap bandpass filter by selecting the appropriate
operating mode.
The GF9102A is packaged in a 44 pin PLCC and is pin
compatible with the TMC2242. The device operates with a
single +5 V supply.
FEATURES
improved performance over TMC2242 in applications
not requiring 1:1 low pass filtering
low power (60mA typical at = 20MHz)
40 MHz maximum clock rate
single device exceeds CCIR 601 lowpass filter
requirements
true unity gain (0.0 dB) at DC
reduced output ringing with constant input in
interpolation mode
built-in TRS code protection
12 bit inputs and 16 bit outputs in 2's complement
signed or unsigned formats
user-selectable 8 to 16 bit output rounding
can also be operated as a 9 or 21 tap chroma
bandpass filter under user control
single +5 V power supply
three state outputs
APPLICATIONS
CCIR 601-compliant oversampling video A/D and
D/A conversion
2:1 interpolation and decimation
4:2:2 to 4:4:4 format conversion
Chroma bandpass filtering
Multi
GEN
GF9102A
Decimating/Interpolating Digital Filter
INPUT
PROCESSING
UNIT
OUTPUT FORMAT
TIMING CONTROLS
CLK
DEC
SYNC
DATA IN
SI11..0
BPF1
OUTPUT
PROCESSING
UNIT
INT
TCO
BPF2
53 TAP LPF
M
U
X
SO3..0
RND2..0
DATA OUT
SO15..0
OE
FUNCTIONAL BLOCK DIAGRAM
Revision Date: February 1996
ORDERING INFORMATION
Part Number Package Type Temperature Range
GF9102ACPM 44 Pin PLCC 0
°
to 70
°
C
GF9102ACTM 44 Pin PLCC Tape 0
°
to 70
°
C
GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. (905) 632-2996 fax: (905) 632-5946
Gennum Japan Corporation: A-302 Miyamae Village, 2-10-42 Miyamae, Suginami-ku, Tokyo 168, Japan tel. (03) 3334-7700 fax (03) 3247-8839
Document No. 521 - 26 - 02
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