LT1995CDD#TRPBF Linear Technology, LT1995CDD#TRPBF Datasheet

IC AMP GAIN SELECT 10-DFN

LT1995CDD#TRPBF

Manufacturer Part Number
LT1995CDD#TRPBF
Description
IC AMP GAIN SELECT 10-DFN
Manufacturer
Linear Technology
Datasheet

Specifications of LT1995CDD#TRPBF

Amplifier Type
Programmable Gain
Number Of Circuits
1
Slew Rate
1000 V/µs
-3db Bandwidth
32MHz
Voltage - Input Offset
750µV
Current - Supply
7.1mA
Current - Output / Channel
120mA
Voltage - Supply, Single/dual (±)
5 V ~ 30 V, ±2.5 V ~ 15 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
10-WFDFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Output Type
-
Gain Bandwidth Product
-
Current - Input Bias
-

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Quantity
Price
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LT
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51
FEATURES
TYPICAL APPLICATIO
APPLICATIO S
Internal Gain Setting Resistors
Pin Configurable as a Difference Amplifier,
Inverting and Noninverting Amplifier
Difference Amplifier:
Noninverting Amplifier:
Inverting Amplifier:
Gain Error: <0.2%
Slew Rate: 1000V/µs
Bandwidth: 32MHz (Gain = 1)
Op Amp Input Offset Voltage: 2.5mV Max
Quiescent Current: 9mA Max
Wide Supply Range: ±2.5V to ±15V
Available in 10-Lead MSOP and
10-Lead (3mm × 3mm) DFN Packages
Instrumentation Amplifier
Current Sense Amplifier
Video Difference Amplifier
Automatic Test Equipment
Gain Range 1 to 7
CMRR > 65dB
Gain Range 1 to 8
Gain Range –1 to –7
–15V TO 15V
RANGE
INPUT
+
High Slew Rate Differential Gain of 1
M1 M2 M4
P1 P2 P4
U
1k
2k
4k
4k
2k
1k
+
U
–15V
15V
LT1995
4k
4k
1995 TA01a
REF
OUT
DESCRIPTIO
The LT
able amplifier with excellent DC performance. Gains from
–7 to 8 with a gain accuracy of 0.2% can be achieved using
no external components. The device is particularly well
suited for use as a difference amplifier, where the excellent
resistor matching results in a typical common mode
rejection ratio of 79dB.
The amplifier is a single gain stage design similar to the
LT1363 and features superb slewing and settling charac-
teristics. Input offset of the internal operational amplifier
is less than 2.5mV and the slew rate is 1000V/µs. The
output can drive a 150Ω load to ±2.5V on ±5V supplies,
making it useful in cable driver applications.
The resistors have excellent matching, 0.2% maximum at
room temperature and 0.3% from –40°C to 85°C. The
temperature coefficient of the resistors is typically
–30ppm/°C. The resistors are extremely linear with volt-
age, resulting in a gain nonlinearity of 10ppm.
The LT1995 is fully specified at ±2.5V, ±5V and ±15V sup-
plies and from –40°C to 85°C. The device is available in
space saving 10-lead MSOP and 10-Lead (3mm × 3mm)
DFN packages. For a micropower precision amplifier with
precision resistors, see the LT1991 and LT1996.
All other trademarks are the property of their respective owners.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Gain Selectable Amplifier
®
1995 is a high speed, high slew rate, gain select-
Large-Signal Transient (G = 1)
U
32MHz, 1000V/µs
1995 TA01b
LT1995
1995fb
1

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LT1995CDD#TRPBF Summary of contents

Page 1

... MSOP and 10-Lead (3mm × 3mm) DFN packages. For a micropower precision amplifier with precision resistors, see the LT1991 and LT1996. , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. OUT ...

Page 2

LT1995 ABSOLUTE MAXIMUM + – Total Supply Voltage ( .............................. 36V Input Current (Note 2) ....................................... ±10mA Output Short-Circuit Duration (Note 3) ........... Indefinite Operating Temperature Range (Note 4) .. – 40°C to 85°C ...

Page 3

ELECTRICAL CHARACTERISTICS Difference Amplifier Configuration 25° SYMBOL PARAMETER V Op Amp Input Offset Voltage OS_OA (Note 10) e Input Noise Voltage n R Common Mode Input Resistance Input Capacitance IN Input Voltage Range ...

Page 4

LT1995 ELECTRICAL CHARACTERISTICS Difference Amplifier Configuration. V REF SYMBOL PARAMETER GE Gain Error V Input Offset Voltage OS Referred to Input (Note Input Offset Voltage Drift OS Referred to Input (Note Amp Input Offset ...

Page 5

ELECTRICAL CHARACTERISTICS Difference Amplifier Configuration. V REF SYMBOL PARAMETER V Input Offset Voltage OS Referred to Input (Note Input Offset Voltage Drift OS Referred to Input (Note Amp Input Offset Voltage OS_OA (Note 10) ...

Page 6

LT1995 W U TYPICAL PERFOR A CE CHARACTERISTICS V Distribution ±15V PACKAGE –3.5 –1.5 –0.5 0.5 1.5 2.5 3.5 –2.5 INPUT OFFSET ...

Page 7

W U TYPICAL PERFOR A CE CHARACTERISTICS Gain vs Frequency –2 –4 = ±15V V S –6 ...

Page 8

LT1995 W U TYPICAL PERFOR A CE CHARACTERISTICS Power Supply Rejection Ratio vs Frequency 90 = ±15V 25° +PSRR 60 50 –PSRR –10 1k 10k ...

Page 9

W U TYPICAL PERFOR A CE CHARACTERISTICS Capacitive Load Handling 100 = ±15V 25° ∞ 10pF ...

Page 10

LT1995 CTIO S (Difference Amplifier Configuration) P1 (Pin 1): Noninverting Gain-of-1 Input. Connects a 4k internal resistor to the op amp’s noninverting input. P2 (Pin 2): Noninverting Gain-of-2 Input. Connects a 2k internal resistor to ...

Page 11

W BLOCK DIAGRA U U APPLICATIO S I FOR ATIO Configuration Flexibility The LT1995 combines a high speed precision operational amplifier with eight ratio-matched on-chip resistors. The resistor configuration and pinout of the device is shown in the Block Diagram. ...

Page 12

LT1995 U U APPLICATIO S I FOR ATIO As shown in Figure 1, the options for fixed gain G include: 1, 1.33, 1.67 and 7, all achieved by pin- strapping alone. With split-supply applications where ...

Page 13

U U APPLICATIO S I FOR ATIO + – LT1995 REF REF – 1. ...

Page 14

LT1995 U U APPLICATIO S I FOR ATIO + LT1995 1 P1 REF – 1. LT1995 ...

Page 15

U U APPLICATIO S I FOR ATIO + LT1995 REF – 0.875 + ...

Page 16

LT1995 U U APPLICATIO S I FOR ATIO Using the LT1995 as an AC-coupled inverting gain stage, the REF pin and the relevant P inputs may all be driven from a V source as depicted in the example of Figure ...

Page 17

U U APPLICATIO S I FOR ATIO If one of the A parameter configurations in Figure 3 is preferred, or the use of an external biasing source is desired, the P and REF input connections shown grounded in a Figure ...

Page 18

LT1995 U U APPLICATIO S I FOR ATIO and power dissipation ( follows for a nominal PCB D layout: • θ For example, in order to maintain a ...

Page 19

... RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS 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

... LT1995 + REF M1 SENSE – OUTPUT 100mV/A –15V 400mV V OUT f = 27MHz –3dB R = 75Ω L 10k 1995 TA06 Stable LOAD = 1.2mA, C Stable S LOAD LT/LT 0805 REV B • PRINTED IN THE USA © LINEAR TECHNOLOGY CORPORATION 2004 10k FLAG OUTPUT 4A LIMIT 1995 TA05 1995fb ...

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