LTC6912
24
6912fa
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
LINEAR TECHNOLOGY CORPORATION 2004
LT/LT 1005 REV A PRINTED IN USA
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LT1228
100MHZ Gain Controlled Transconductance Amplifier
Differential Input, Continuous Analog Gain Control
LT1251/LT1256
40Mhz Video Fader and Gain Controlled Amplifier
Two Input, One Output, Continuous Analog Gain Control
LTC1564
10kHz to 150kHz Digitally Controlled Filter and PGA
Continuous Time, Low Noise 8th Order Filter and 4-Bit PGA
LTC6910-1/-2/-3
Digitally Controlled Programmable Gain Amplifier
Single Programmable Gain Amplifier, 3-Bit Parallel Digital Interface
in SOT-23
LTC6911-1/-2
Dual Digitally Controlled Programmable Gain Amplifier
Dual Programmable Gain Amplifiers, 3-Bit Parallel Digital Interface
in MSOP-10
LTC6915
Zero Drift Instrumentation Amp
Gains 0 - 4096V/V, 116dB CMRR
with Digitally Programmable Gain
U
TYPICAL APPLICATIO
INA
AGND
INB
1
F
0.1
F
CHANNEL A
INPUT
CHANNEL B
INPUT
VOUT
(TO ADC)
OUT A
OUT B
LTC6912-X
V+
V–
SHDN
CS/LD
DATA
CLK
SHDN
CS/LD
DIN
5
6
7
8
10
9
DGND
DOUT
2
12
14
3
4
15
13
CHB
CHA
3-WIRE
SPI
INTERFACE
6912 TA02
MUX OPERATION: IF THE LOWER NIBBLE (Q3, Q2, Q1, Q0) IS (1, 0, 0, 0) THEN OUTA IS IN
TRI-STATE AND THE UPPER NIBBLE (Q7, Q6, Q5, Q4) CONTROLS THE ACTIVE CHANNEL B.
IF THE UPPER NIBBLE IS (1, 0, 0, 0) THEN OUTB IS IN TRI-STATE
AND THE LOWER NIBBLE CONTROLS ACTIVE CHANNEL A.
A 2:1 PGA MUX