LT1396 Linear Technology Corporation, LT1396 Datasheet

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LT1396

Manufacturer Part Number
LT1396
Description
Dual 400mhz Current Feedback Amplifier
Manufacturer
Linear Technology Corporation
Datasheet

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FEATURES
APPLICATIO S
TYPICAL APPLICATIO
400MHz Bandwidth on ± 5V (A
350MHz Bandwidth on ± 5V (A
0.1dB Gain Flatness: 100MHz (A
High Slew Rate: 800V/µs
Wide Supply Range: ±2V(4V) to ±6V(12V)
80mA Output Current
Low Supply Current: 4.6mA/Amplifier
LT1395: SO-8, TSOT23-5 and TSOT23-6 Packages
LT1396: SO-8, MSOP and Tiny 3mm × 3mm ×
0.75mm DFN-8 Packages
LT1397: SO-14, SSOP-16 and Tiny 4mm × 3mm ×
0.75mm DFN-14 Packages
Cable Drivers
Video Amplifiers
MUX Amplifiers
High Speed Portable Equipment
IF Amplifiers
HIGH INPUT RESISTANCE
DOES NOT LOAD CABLE
EVEN WHEN POWER IS OFF
0.67pF
1.02k
3.01k
R
G1
Unity-Gain Video Loop-Through Amplifier
U
V
IN –
12.1k
+
LT1396
1/2
255Ω
R
F1
BNC INPUTS
0.67pF
V
V
U
= 1)
= 2, –1)
V
= 1, 2 and –1)
3.01k
63.4Ω
R
G2
V
IN +
12.1k
+
LT1396
1/2
255Ω
R
F2
1% RESISTORS
FOR A GAIN OF G:
V
R
R
R
TRIM CMRR WITH R
OUT
F1
G1
G2
= R
=
= (5G – 1) R
= G (V
(5G – 1)
F2
R
F2
IN +
Current Feedback Amplifier
DESCRIPTIO
The LT
400MHz current feedback amplifiers with an 800V/µs slew
rate and the ability to drive up to 80mA of output current.
The LT1395/LT1396/LT1397 operate on all supplies from
a single 4V to ±6V. At ±5V, they draw 4.6mA of supply
current per amplifier. The LT1395CS6 also adds a shut-
down pin. When disabled, the LT1395CS6 draws virtually
zero supply current and its output becomes high imped-
ance. The LT1395CS6 will turn on in only 30ns and turn off
in 40ns, making it ideal in spread spectrum and portable
equipment applications.
For space limited applications, the LT1395 is available in
TSOT-23 packages, the LT1396 is available in a tiny 3mm
× 3mm × 0.75mm dual fine pitch leadless DFN package,
and the LT1397 is available in a tiny 4mm × 3mm ×
0.75mm DFN package.
The LT1395/LT1396/LT1397 are manufactured on Linear
Technology’s proprietary complementary bipolar process.
They have standard single/dual/quad pinouts and they are
optimized for use on supply voltages of ±5V.
All other trademarks are the property of their respective owners.
1395/6/7 TA01
– V
V
Single/Dual/Quad 400MHz
F2
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
OUT
IN –
G1
)
®
1395/LT1396/LT1397 are single/dual/quad
–20
–30
–40
–50
–60
–10
10
LT1395/LT1396/LT1397
0
100
U
COMMON MODE SIGNAL
NORMAL SIGNAL
Loop-Through Amplifier
1k
Frequency Response
10k 100k
FREQUENCY (Hz)
1M
10M 100M
1395/6/7 TA02
1G
139567fc
1

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LT1396 Summary of contents

Page 1

... For space limited applications, the LT1395 is available in TSOT-23 packages, the LT1396 is available in a tiny 3mm × 3mm × 0.75mm dual fine pitch leadless DFN package, and the LT1397 is available in a tiny 4mm × 3mm × ...

Page 2

... Total Supply Voltage ( ........................... 12.6V Input Current (Note 2) ....................................... ±10mA Output Current ................................................. ±100mA Differential Input Voltage (Note 2) ........................... ±5V Output Short-Circuit Duration (Note 3) ........ Continuous Operating Temperature Range (Note 4) LT1395C/LT1396C/LT1397C ............. – 40°C to 85°C LT1397H ......................................... – 40°C to 125° FIGURATIO TOP VIEW + OUT A ...

Page 3

... LEAD BASED FINISH TAPE AND REEL LT1396CDD LT1396CDD#TR LT1397CDE LT1397CDE#TR LT1397HDE LT1397HDE#TR LT1397CGN LT1397CGN#TR LT1396CMS8 LT1396CMS8#TR LT1397CS LT1397CS#TR LT1395CS5 LT1395CS5#TR LT1395CS6 LT1395CS6#TR LT1395CS8 LT1395CS8#TR LT1396CS8 LT1396CS8#TR Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on nonstandard lead based finish parts. ...

Page 4

... LT1395/LT1396/LT1397 ELECTRICAL C HARA TERISTICS C The ● denotes specifications which apply over the specified operating temperature range, otherwise specifications are ±5V 0.5V, pulse tested, unless otherwise noted. (Note 5) For each amplifier 0V SYMBOL PARAMETER V Input Offset Voltage OS ∆V /∆T Input Offset Voltage Drift ...

Page 5

... The LT1397H is guaranteed functional over the operating temperature range of –40°C to 125°C. Note 5: The LT1395C/LT1396C/LT1397C are guaranteed to meet specified performance from 0°C to 70°C. The LT1395C/LT1396C/LT1397C are designed, characterized and expected to meet specified performance from – ...

Page 6

... LT1395/LT1396/LT1397 W U TYPICAL AC PERFOR ( (Ω ±5 1 100 ±5 2 100 ±5 – 1 100 ±5 3 500 ±5 5 500 ±5 10 500 ±5 10 500 W U TYPICAL PERFOR A Closed-Loop Gain vs Frequency ( – 2 – 4 – 10M 100M 1G = ±5V V FREQUENCY (Hz) ...

Page 7

... FREQUENCY (Hz) 1395/6/7 G11 Capacitive Load vs Output Series Resistor 255Ω ± OVERSHOOT < 100 CAPACITIVE LOAD (pF) 1395/6/7 G14 LT1395/LT1396/LT1397 PSRR vs Frequency PSRR – PSRR 25° 255Ω 100Ω ...

Page 8

... LT1395/LT1396/LT1397 W U TYPICAL PERFOR A Output Voltage Swing vs Temperature 100k R = 150Ω ± –1 – 2 – 100k R = 150Ω – 4 – 5 –50 – 100 125 AMBIENT TEMPERATURE (°C) 1395/6/7 G16 Input Offset Voltage vs Temperature 3 ...

Page 9

... NC (Pin 5): No Connection. OUT (Pin 6): Output (Pin 7): Positive Supply Voltage, Usually 5V. NC (Pin 8): No Connection. LT1396CMS8, LT1396CS8, LT1396CDD OUT A (Pin 1): A Channel Output. – (Pin 2): Inverting Input of A Channel Amplifier (Pin 3): Noninverting Input of A Channel Amplifier. – V (Pin 4): Negative Supply Voltage, Usually – 5V. ...

Page 10

... For gains less than 2 in the noninverting mode, the overall slew rate is limited by the input stage. The input slew rate of the LT1395/LT1396/LT1397 is approximately 600V/µs and is set by internal currents and capacitances. The output slew rate is set by the value of the feedback resistor and internal capacitance gain of 2 with 255Ω ...

Page 11

... R13, which yields a 75Ω + 75Ω SOURCES R R11 82.5Ω G R12 90.9Ω B R13 76.8Ω ALL RESISTORS 1% = ± Figure 4. Buffered RGB to Color-Difference Matrix LT1395/LT1396/LT1397 + R8 A1 845Ω 1/4 LT1397 – R9 432Ω R7 255Ω R10 2320Ω – 127Ω 255Ω ...

Page 12

... Amplifier A3 then inverts and amplifies the signal by 2, resulting in the Y output. Buffered Color-Difference to RGB Matrix An LT1395 combined with an LT1396 can be used to create buffered RGB outputs from color-difference sig- nals (Figure 5). The R output is a back-terminated 75Ω signal created using resistor R5 and amplifier A1 config- ured for a gain of +4 via resistors R3 and R4 ...

Page 13

... ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON TOP AND BOTTOM OF PACKAGE LT1395/LT1396/LT1397 + V OUT – V 1395/6 ...

Page 14

... LT1395/LT1396/LT1397 PACKAGE DESCRIPTIO 3.60 ±0.05 1.70 ±0.05 2.20 (2 SIDES) ±0.05 0.25 ± 0.05 0.50 BSC 3.30 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS NOTE: 1. DRAWING PROPOSED TO BE MADE VARIATION OF VERSION (WGED-3) IN JEDEC PACKAGE OUTLINE MO-229 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS .254 MIN .0165 ± .0015 RECOMMENDED SOLDER PAD LAYOUT .007 – ...

Page 15

... TYP 0.53 ± 0.152 1.10 (.021 ± .006) (.043) DETAIL “A” MAX SEATING PLANE 0.22 – 0.38 (.009 – .015) 0.65 TYP (.0256) LT1395/LT1396/LT1397 0.52 (.0205 REF 3.00 ± 0.102 (.118 ± .004) (NOTE 0.86 (.034) REF 0.127 ± 0.076 (.005 ± ...

Page 16

... LT1395/LT1396/LT1397 PACKAGE DESCRIPTIO 0.62 MAX 3.85 MAX 2.62 REF RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.20 BSC DATUM ‘A’ 0.30 – 0.50 REF NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6 ...

Page 17

... MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193 U S6 Package 6-Lead Plastic TSOT-23 (Reference LTC DWG # 05-08-1634) 0.95 REF 1.22 REF 1.50 – 1.75 2.80 BSC 1.4 MIN (NOTE 4) 0.80 – 0.90 1.00 MAX 0.30 – 0.50 REF 0.09 – 0.20 (NOTE 3) LT1395/LT1396/LT1397 2.90 BSC (NOTE 4) PIN ONE ID 0.30 – 0.45 0.95 BSC 6 PLCS (NOTE 3) 0.01 – 0.10 1.90 BSC S6 TSOT-23 0302 REV B 139567fc 17 ...

Page 18

... LT1395/LT1396/LT1397 PACKAGE DESCRIPTIO .050 BSC .245 MIN .030 ±.005 TYP RECOMMENDED SOLDER PAD LAYOUT .010 – .020 (0.254 – 0.508) .008 – .010 (0.203 – 0.254) NOTE: 1. DIMENSIONS IN 2. DRAWING NOT TO SCALE 3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) ...

Page 19

... N .053 – .069 (1.346 – 1.752) 0° – 8° TYP .014 – .019 (0.355 – 0.483) TYP LT1395/LT1396/LT1397 .337 – .344 (8.560 – 8.738) NOTE .150 – .157 (3.810 – 3.988) NOTE 3 N/2 ...

Page 20

... LT1395/LT1396/LT1397 O U TYPICAL A PPLICATI Single Supply RGB Video Amplifier The LT1395 can be used with a single supply voltage more to drive ground-referenced RGB video. In Figure 6, two 1N4148 diodes D1 and D2 have been placed in series with the output of the LT1395 amplifier A1 but within the feedback loop formed by resistor R8. These diodes effectively level-shift A1’ ...

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