IC PGA DIGITAL R-R DUAL 10MSOP

 

LTC6911HMS-1#TRPBF

Manufacturer Part NumberLTC6911HMS-1#TRPBF
DescriptionIC PGA DIGITAL R-R DUAL 10MSOP
ManufacturerLinear Technology
LTC6911HMS-1#TRPBF datasheets

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Specifications of LTC6911HMS-1#TRPBF

Amplifier TypeProgrammable GainNumber Of Circuits2
Output TypeRail-to-RailSlew Rate16 V/µs
Gain Bandwidth Product11MHzVoltage - Input Offset2000µV
Current - Supply3.1mACurrent - Output / Channel35mA
Voltage - Supply, Single/dual (±)2.7 V ~ 10.5 V, ±2.7 V ~ 5.25 VOperating Temperature-40°C ~ 125°C
Mounting TypeSurface MountPackage / Case10-MSOP, Micro10™, 10-uMAX, 10-uSOP
Lead Free Status / RoHS StatusLead free / RoHS Compliant-3db Bandwidth-
Current - Input Bias-  
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FEATURES
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
U
APPLICATIO S
Data Acquisition Systems
Dynamic Gain Changing
Automatic Ranging Circuits
Automatic Gain Control
U
TYPICAL APPLICATIO
DIGITAL
INPUT
GAIN IN V/V
G2
G1
G0
LTC6911-1
LTC6911-2
0
0
0
0
0
AGND
0
0
1
–1
–1
0
1
0
–2
–2
0
1
1
–5
–4
1
0
0
–10
–8
1
0
1
–20
–16
1
1
0
–50
–32
1
1
1
–100
–64
Dual Matched Amplifiers
with Digitally Programmable
DESCRIPTIO
®
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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
+
V
2.7V TO 10.5V
0.1 F
7
9
1
10
V
=
OUTA
V
INA
GAIN • V
INA
1 F
2
LTC6911-X
3
8
V
=
OUTB
V
INB
GAIN • V
INB
691112 TA01
4
5
6
G0
G1
G2
LTC6911-1/LTC6911-2
Gain in MSOP
U
Frequency Response (LTC6911-1)
50
V
= 10V, V
= 5mV
S
IN
GAIN OF –100 (DIGITAL INPUT 111)
40
30
GAIN OF –50 (DIGITAL INPUT 110)
GAIN OF –20 (DIGITAL INPUT 101)
20
GAIN OF –10 (DIGITAL INPUT 100)
GAIN OF –5 (DIGITAL INPUT 011)
10
GAIN OF –2 (DIGITAL INPUT 010)
0
GAIN OF –1 (DIGITAL INPUT 001)
–10
100
1k
10k
100k
1M
FREQUENCY (Hz)
sn691112 691112fs
RMS
10M
691112 TA02
1

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LTC6911HMS-1#TRPBF Summary of contents

  • Page 1

    ... 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. , LTC and LT are registered trademarks of Linear Technology Corporation 2.7V TO 10.5V 0.1 F ...

  • Page 2

    ... U PACKAGE/ORDER I FOR ATIO ORDER PART NUMBER LTC6911CMS-1 LTC6911IMS-1 LTC6911HMS-1 LTC6911CMS-2 LTC6911IMS-2 LTC6911HMS-2 Consult LTC Marketing for parts specified with wider operating temperature ranges. NOMINAL MAXIMUM LINEAR INPUT RANGE (V VOLTAGE GAIN Dual 5V (dB) Supply 0 –120 0.5 34 0.2 40 ...

  • Page 3

    ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are midsupply point, unless otherwise noted. PARAMETER CONDITIONS LTC6911-1/LTC6911-2 Total Supply Voltage ( Supply Current per Channel V = 2.7V 5V ...

  • Page 4

    LTC6911-1/LTC6911-2 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are midsupply point, unless otherwise noted. PARAMETER CONDITIONS LTC6911-1 Only Voltage Gain (Note 2.7V, Gain = 2.7V, Gain = ...

  • Page 5

    ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are midsupply point, unless otherwise noted. PARAMETER CONDITIONS LTC6911-1 Only Channel-to-Channel Voltage V = 5V, Gain = Gain Match V = 5V, Gain = ...

  • Page 6

    LTC6911-1/LTC6911-2 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are midsupply point, unless otherwise noted. PARAMETER CONDITIONS LTC6911-1 Only DC Input Resistance INA or INB Pins (Note 9) Gain = 0 Gain = 1 Gain = ...

  • Page 7

    ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are midsupply point, unless otherwise noted. PARAMETER CONDITIONS LTC6911-2 Only Voltage Gain (Note 2.7V, Gain = 2.7V, Gain = ...

  • Page 8

    LTC6911-1/LTC6911-2 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are midsupply point, unless otherwise noted. PARAMETER CONDITIONS LTC6911-2 Only V = 5V, Gain = 5V, Gain = 5V, Gain ...

  • Page 9

    ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are midsupply point, unless otherwise noted. PARAMETER CONDITIONS LTC6911-2 Only DC Input Resistance Match Gain = 1 R – R Gain = 2 INA INB Gain = 4 Gain > 4 ...

  • Page 10

    LTC6911-1/LTC6911 TYPICAL PERFOR A CE CHARACTERISTICS LTC6911-1 Gain Shift vs Temperature 0.100 OUTPUT UNLOADED 0.075 GAIN = 100 0.050 GAIN = 10 0.025 0 GAIN = 1 –0.025 –0.050 –0.075 –0.100 –50 –25 0 ...

  • Page 11

    W U TYPICAL PERFOR A CE CHARACTERISTICS LTC6911-2 Gain Shift vs Temperature 0.100 OUTPUT UNLOADED 0.075 GAIN = 64 0.050 0.025 GAIN = 8 0 GAIN = 1 –0.025 –0.050 –0.075 –0.100 –50 – ...

  • Page 12

    LTC6911-1/LTC6911 CTIO S INA (Pin 1): Analog Input. The input signal to the A channel amplifier of the LTC6911-X is the voltage difference be- tween the INA and AGND pin. The INA pin connects internally ...

  • Page 13

    CTIO S AGND (Pin 2): Analog Ground. The AGND pin is at the midpoint of an internal resistive voltage divider, develop- ing a potential halfway between the V equivalent series resistance to the pin of ...

  • Page 14

    LTC6911-1/LTC6911 CTIO S In noise sensitive applications where AGND does not directly tie to a ground plane Figures 2 and important to AC-bypass the AGND pin. Otherwise, chan- nel-to-channel isolation ...

  • Page 15

    U U APPLICATIO S I FOR ATIO Functional Description The LTC6911-1/LTC6911-2 are small outline, wideband inverting 2-channel amplifiers whose voltage gain is digi- tally programmable. Each delivers a choice of eight volt- age gains, controlled by the 3-bit digital parallel ...

  • Page 16

    LTC6911-1/LTC6911 APPLICATIO S I FOR ATIO 1.5mV at a gain setting high gains, V approaches V . (Offset voltage is random and can OS(OA) have either polarity centered on 0V.) The MOS ...

  • Page 17

    U U APPLICATIO S I FOR ATIO Construction and Instrumentation Cautions Electrically clean construction is important in applications seeking the full dynamic range of the LTC6911 family of dual amplifiers absolutely critical to have AGND either AC bypassed ...

  • Page 18

    LTC6911-1/LTC6911-2 U TYPICAL APPLICATIO Expanding an ADC’s Dynamic Range Figure 5 shows a compact 2-channel data acquisition system for wide ranging input levels. This figure combines an LTC6911-X programmable amplifier (10-lead MSOP) with an LTC1865 analog-to-digital converter (ADC ...

  • Page 19

    ... LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

  • Page 20

    ... Continuous Time, Low Noise 8th Order Filter and 4-Bit PGA Single Channel Version of the LTC6911 14 Bits of Gain Control www.linear.com – 0 OUT – V OUT –5V 0 OUT 9 – V OUT 0.1 F 691112 TA03 sn691112 691112fs LT/TP 0104 1K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2004 ...

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