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LTC6911IMS-1#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
LTC6911-1/LTC6911-2
1
sn691112 691112fs
, LTC and LT are registered trademarks of Linear Technology Corporation.
■
3-Bit Digital Gain Control:
(Inverting Gains of 0, 1, 2, 5, 10, 20, 50
and 100V/V) -1 Option
(Inverting Gains of 0, 1, 2, 4, 8, 16, 32
and 64V/V) -2 Option
■
Two Matched Programmable Gain Amplifiers
■
Channel-to-Channel Gain Matching of 0.1dB (Max)
■
Rail-to-Rail Input Range
■
Rail-to-Rail Output Swing
■
Single or Dual Supply: 2.7V to 10.5V Total
■
11MHz Gain Bandwidth Product
■
Input Noise: 10nV/√Hz
■
Total System Dynamic Range to 120dB
■
Input Offset Voltage: 2mV, Gain of 10
■
Low Profile 10-Lead MSOP Package
Dual Matched Amplifiers
with Digitally Programmable
Gain in MSOP
■
Data Acquisition Systems
■
Dynamic Gain Changing
■
Automatic Ranging Circuits
■
Automatic Gain Control
Frequency Response (LTC6911-1)
The LTC
®
6911 is a family of low noise digitally program-
mable gain amplifiers (PGAs) that are easy to use and
occupy very little PC board space. The matched gain of
both channels is adjustable using a 3-bit parallel interface
to select voltage gains of 0, 1, 2, 5, 10, 20, 50 and 100V/
V (LTC6911-1) and 0, 1, 2, 4, 8, 16, 32 and 64V/V
(LTC6911-2). All gains are inverting.
The LTC6911 family consists of two matched inverting
amplifiers with rail-to-rail outputs. When operated with
unity gain, they will also process rail-to-rail input signals.
A half-supply reference generated internally at the AGND
pin supports single power supply applications. Operating
from single or split supplies from 2.7V to 10.5V, the
LTC6911 family is offered in a 10-lead MSOP package.
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
LTC6911-X
10
79
V
OUTB
=
GAIN • V
INB
V
OUTA
=
GAIN • V
INA
8
1
V
INA
AGND
V
INB
3
2
≥1µF
0.1µF
V
+
2.7V TO 10.5V
456
691112 TA01
G0 G1 G2
G2
0
0
0
0
1
1
1
1
G1
0
0
1
1
0
0
1
1
G0
0
1
0
1
0
1
0
1
LTC6911-1
0
–1
–2
–5
–10
–20
–50
–100
LTC6911-2
0
–1
–2
–4
–8
–16
–32
–64
DIGITAL
INPUT
GAIN IN V/V
FREQUENCY (Hz)
10
GAIN (dB)
30
50
0
20
40
100 10k 100k 1M 10M
691112 TA02
–10
1k
GAIN OF –100 (DIGITAL INPUT 111)
GAIN OF –1 (DIGITAL INPUT 001)
GAIN OF –2 (DIGITAL INPUT 010)
GAIN OF –5 (DIGITAL INPUT 011)
GAIN OF –10 (DIGITAL INPUT 100)
GAIN OF –20 (DIGITAL INPUT 101)
GAIN OF –50 (DIGITAL INPUT 110)
V
S
= 10V, V
IN
= 5mV
RMS
LTC6911-1/LTC6911-2
2
sn691112 691112fs
Total Supply Voltage (V
+
to V
–
) .............................. 11V
Input Current ..................................................... ±10mA
Operating Temperature Range (Note 2)
LTC6911C-1/LTC6911C-2 .................. –40°C to 85°C
LTC6911I-1/LTC6911I-2 .................... –40°C to 85°C
LTC6911H-1/LTC6911H-2 ................ –40°C to 125°C
Specified Temperature Range (Note 3)
LTC6911C-1/LTC6911C-2 .................. –40°C to 85°C
LTC6911I-1/LTC6911I-2 .................... –40°C to 85°C
LTC6911H-1/LTC6911H-2 ................ –40°C to 125°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................300°C
ORDER PART NUMBER
T
JMAX
= 150°C, θ
JA
= 230°C/W
LTC6911CMS-1
LTC6911IMS-1
LTC6911HMS-1
LTC6911CMS-2
LTC6911IMS-2
LTC6911HMS-2
(Note 1)
ABSOLUTE AXI U RATI GS
WWWU
PACKAGE/ORDER I FOR ATIO
UU
W
Table 1 (LTC6911-1)
NOMINAL
NOMINAL
INPUT
DIGITAL INPUTS VOLTAGE GAIN
Dual 5V Single 5V Single 3V IMPEDANCE
G2 G1 G0 Volts/Volt (dB) Supply Supply Supply (kΩ)
0 0 0 0 –120 10 5 3 (Open)
0 0 1 –1 0 10 5 3 10
0 1 0 –2 6 5 2.5 1.5 5
0 1 1 –5 14 2 1 0.6 2
1 0 0 –10 20 1 0.5 0.3 1
1 0 1 –20 26 0.5 0.25 0.15 1
1 1 0 –50 34 0.2 0.1 0.06 1
1 1 1 –100 40 0.1 0.05 0.03 1
GAI SETTI GS A D PROPERTIES
UUU
1
2
3
4
5
INA
AGND
INB
G0
G1
10
9
8
7
6
OUTA
V
–
OUTB
V
+
G2
TOP VIEW
MS PACKAGE
10-LEAD PLASTIC MSOP
Consult LTC Marketing for parts specified with wider operating temperature ranges.
MAXIMUM LINEAR INPUT RANGE (V
P-P
)
MS PART MARKING
LTAHK
LTAHM
LTBCF
LTAHH
LTAHJ
LTBCG
Table 2 (LTC6911-2)
NOMINAL
NOMINAL
INPUT
DIGITAL INPUTS VOLTAGE GAIN
Dual 5V Single 5V Single 3V IMPEDANCE
G2 G1 G0 Volts/Volt (dB) Supply Supply Supply (kΩ)
0 0 0 0 –120 10 5 3 (Open)
0 0 1 –1 0 10 5 3 10
0 1 0 –2 6 5 2.5 1.5 5
0 1 1 –4 12 2.5 1.25 0.75 2.5
1 0 0 –8 18.1 1.25 0.625 0.375 1.25
1 0 1 –16 24.1 0.625 0.3125 0.188 1.25
1 1 0 –32 30.1 0.3125 0.156 0.094 1.25
1 1 1 –64 36.1 0.156 0.078 0.047 1.25
MAXIMUM LINEAR INPUT RANGE (V
P-P
)
LTC6911-1/LTC6911-2
3
sn691112 691112fs
The ● denotes the specifications that apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
S
= 5V, AGND = 2.5V, Gain = 1 (Digital Inputs 001), R
L
= 10k
to midsupply point, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
C/I GRADES H GRADE
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
LTC6911-1/LTC6911-2
Total Supply Voltage (V
S
) ● 2.7 10.5 2.7 10.5 V
Supply Current per Channel V
S
= 2.7V, V
INA
= V
INB
= V
AGND
● 2.1 3.15 2.1 3.25 mA
V
S
= 5V, V
INA
= V
INB
= V
AGND
● 2.5 3.75 2.5 4.00 mA
V
S
= ±5V, V
INA
= V
INB
= 0V, Pins 4, 5, 6 = –4.5V or 5V ● 3.1 4.65 3.1 5.00 mA
V
S
= ±5V, V
INA
= V
INB
= 0V, Pin 4 = 4.5V, ● 3.1 4.65 3.1 5.00 mA
Pins 5, 6 = 0.5V
Output Voltage Swing LOW (Note 4) V
S
= 2.7V, R
L
= 10k Tied to Mid Supply ● 12 30 12 35 mV
V
S
= 2.7V, R
L
= 500Ω Tied to Mid Supply ● 60 110 60 125 mV
V
S
= 5V, R
L
= 10k Tied to Mid Supply ● 20 40 20 45 mV
V
S
= 5V, R
L
= 500Ω Tied to Mid Supply ● 100 170 100 190 mV
V
S
= ±5V, R
L
= 10k Tied to 0V ● 30 50 30 60 mV
V
S
= ±5V, R
L
= 500Ω Tied to 0V ● 190 260 190 290 mV
Output Voltage Swing HIGH (Note 4) V
S
= 2.7V, R
L
= 10k Tied to Mid Supply ● 10 20 10 25 mV
V
S
= 2.7V, R
L
= 500Ω Tied to Mid Supply ● 50 80 50 90 mV
V
S
= 5V, R
L
= 10k Tied to Mid Supply ● 10 30 10 35 mV
V
S
= 5V, R
L
= 500Ω Tied to Mid Supply ● 90 160 90 175 mV
V
S
= ±5V, R
L
= 10k Tied to 0V ● 20 40 20 45 mV
V
S
= ±5V, R
L
= 500Ω Tied to 0V ● 180 250 180 270 mV
Output Short-Circuit Current (Note 5) V
S
= 2.7V ● ±27 ±27 mA
V
S
= ±5V ● ±35 ±35 mA
AGND Open-Circuit Voltage V
S
= 5V ● 2.45 2.5 2.55 2.45 2.5 2.55 V
AGND (Common Mode) V
S
= 2.7V ● 0.55 1.60 0.55 1.60 V
Input Voltage Range V
S
= 5V ● 0.75 3.65 0.75 3.65 V
V
S
= ±5V ● –4.30 3.20 –4.30 3.20 V
AGND Rejection (i.e., Common V
S
= 2.7V, V
AGND
= 1.1V to 1.6V ● 55 80 50 80 dB
Mode Rejection or CMRR) V
S
= ±5V, V
AGND
= –2.5V to 2.5V ● 55 75 50 75 dB
Power Supply Rejection Ratio (PSRR) V
S
= 2.7V to ±5V ● 60 80 57 80 dB
Slew Rate V
S
= 5V, V
OUTA
= V
OUTB
= 1.1V to 3.9V 12 12 V/µs
V
S
= ±5V, V
OUTA
= V
OUTB
= ±1.4V 16 16 V/µs
Signal Attenuation at Gain = 0 Setting Gain = 0 (Digital Inputs 000), f = 20kHz ● –120 –120 dB
Digital Input “High” Voltage V
S
= 2.7V ● 2.43 2.43 V
V
S
= 5V ● 4.50 4.50 V
V
S
= ±5V ● 4.50 4.50 V
Digital Input “Low” Voltage V
S
= 2.7V ● 0.27 0.27 V
V
S
= 5V ● 0.50 0.50 V
V
S
= ±5V ● 0.50 0.50 V
Digital Input “High” Current V
S
= 2.7V, Pins 4, 5, 6 = 2.43V ● 11µA
V
S
= 5V, Pins 4, 5, 6 = 4.5V ● 55µA
V
S
= ±5V, Pins 4, 5, 6 = 4.5V ● 10 10 µA
Digital Input “Low” Current V
S
= 2.7V, Pins 4, 5, 6 = 0.27V ● 11µA
V
S
= 5V, Pins 4, 5, 6 = 0.5V ● 55µA
V
S
= ±5V, Pins 4, 5, 6 = 0.5V ● 10 10 µA
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LTC6911IMS-1#TRPBF

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Buy LTC6911IMS-1#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Special Purpose Amplifiers 2x Matched Amps w/ Digly Progmable Gain
Lifecycle:
New from this manufacturer.
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