Datasheet

ManualsBrandsLINEAR TECHNOLOGY ManualsLinear ICsLinear IC - Op-amp Multi-purpose SO 8

LT1215/LT1216

23MHz, 50V/µs, Single Supply

Dual and Quad

Precision Op Amps

■

Slew Rate: 50V/µs Typ

■

Gain-Bandwidth Product: 23MHz Typ

■

Fast Settling to 0.01%

2V Step to 200µV: 250ns Typ

10V Step to 1mV: 480ns Typ

■

Excellent DC Precision in All Packages

Input Offset Voltage: 450µV Max

Input Offset Voltage Drift: 10µV/°C Max

Input Offset Current: 120nA Max

Input Bias Current: 600nA Max

Open-Loop Gain: 1000V/mV Min

■

Single Supply Operation

Input Voltage Range Includes Ground

Output Swings to Ground While Sinking Current

■

Low Input Noise Voltage: 12.5nV/√Hz Typ

■

Low Input Noise Current: 0.5pA/√Hz Typ

■

Specified on 3.3V, 5V and ±15V

■

Large Output Drive Current: 30mA Min

■

Low Supply Current per Amplifier: 6.6mA Max

■

Dual in 8-Pin DIP and SO-8

■

Quad in 14-Pin DIP and NARROW SO-16

The LT

1215 is a dual, single supply precision op amp with

a 23MHz gain-bandwidth product and a 50V/µs slew rate.

The LT1216 is a quad version of the same amplifier. The

DC precision of the LT1215/LT1216 eliminates trims in

most systems while providing high frequency perfor-

mance not usually found in single supply amplifiers.

The LT1215/LT1216 will operate on any supply greater

than 2.5V and less than 36V total. These amplifiers are

specified on single 3.3V, single 5V and ±15V supplies, and

only require 5mA of quiescent supply current per ampli-

fier. The inputs can be driven beyond the supplies without

damage or phase reversal of the output. The minimum

output drive is 30mA, ideal for driving low impedance loads.

■

2.5V Full-Scale 12-Bit Systems: V

≤ 0.75 LSB

■

10V Full-Scale 16-Bit Systems: V

≤ 3 LSB

■

Active Filters

■

Photo Diode Amplifiers

■

DAC Current to Voltage Amplifiers

■

Battery-Powered Systems

Single Supply Instrumentation Amplifier

Frequency Response

FREQUENCY (Hz)

GAIN (dB)

–10

–20

–30

–40

–50

–60

–70

1k 100k 1M 10M

1215/16 TA02

10k

DIFFERENTIAL INPUT

COMMON MODE INPUT

–

1/2

LT1215

113Ω

OUT

1215/16 TA01

0.1µF

–

113Ω

1020Ω

1/2

LT1215

NOTE:

0.1% RESISTORS GIVE CMRR ≥ 68dB.

GAIN IS 10.0V/V.

COMMON MODE INPUT RANGE

IS FROM 0.3V TO 3.0V.

BANDWIDTH IS 2.8MHz.

Note: For applications requiring less slew rate, see the LT1211/LT1212 and

LT1213/LT1214 data sheets.

APPLICATIO S

FEATURES

TYPICAL APPLICATIO

DESCRIPTIO

, LTC and LT are registered trademarks of Linear Technology Corporation.

Summary of content (20 pages)

PAGE 1
LT1215/LT1216 23MHz, 50V/µs, Single Supply Dual and Quad Precision Op Amps U DESCRIPTIO FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Slew Rate: 50V/µs Typ Gain-Bandwidth Product: 23MHz Typ Fast Settling to 0.
PAGE 2
LT1215/LT1216 W W W AXI U U ABSOLUTE RATI GS (Note 1) Total Supply Voltage (V + to V –) ............................. 36V Input Current ..................................................... ±15mA Output Short-Circuit Duration (Note 2) ........ Continuous Operating Temperature Range LT1215C/LT1216C (Note 3) .............. – 40°C to 85°C LT1215M (OBSOLETE) ............... – 55°C to 125°C Specified Temperature Range LT1215C/LT1216C (Note 4) .............. – 40°C to 85°C LT1215M (OBSOLETE) ...............
PAGE 3
LT1215/LT1216 U AVAILABLE OPTIO S NUMBER OF OP AMPS Two (Dual) TA RANGE – 40°C to 85°C – 55°C to 125°C Four (Quad) – 40°C to 85°C MAX VOS (25°C) 300µV 450µV 450µV 300µV 450µV 450µV PACKAGE MAX TC VOS (∆VOS /∆T) 2.5µV/°C 5µV/°C 10µV/°C 2.5µV/°C 5µV/°C 10µV/°C CERAMIC (J) OBSOLETE PLASTIC DIP (N) LT1215ACN8 LT1215CN8 SURFACE MOUNT (S) LT1215CS8 LT1215AMJ8 LT1215MJ8 LT1216CN LT1216CS 5V ELECTRICAL CHARACTERISTICS VS = 5V, VCM = 0.5V, VOUT = 0.5V, TA = 25°C, unless otherwise noted.
PAGE 4
LT1215/LT1216 5V ELECTRICAL CHARACTERISTICS VS = 5V, VCM = 0.5V, VOUT = 0.5V, 0°C ≤ TA ≤ 70°C, unless otherwise noted. SYMBOL VOS ∆VOS ∆T IOS IB CMRR PSRR AVOL IS PARAMETER Input Offset Voltage Input Offset Voltage Drift (Note 6) Input Offset Current Input Bias Current Input Voltage Range CONDITIONS Common Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing (Note 7) VCM = 0.1V to 2.9V VS = 2.6V to 12.5V VO = 0.05V to 3.
PAGE 5
LT1215/LT1216 5V ELECTRICAL CHARACTERISTICS VS = 5V, VCM = 0.5V, VOUT = 0.5V, – 55°C ≤ TA ≤ 125°C, unless otherwise noted. SYMBOL VOS ∆VOS ∆T IOS IB CMRR PSRR AVOL IS PARAMETER Input Offset Voltage Input Offset Voltage Drift (Note 6) Input Offset Current Input Bias Current Input Voltage Range CONDITIONS Common Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing (Note 7) VCM = 0.4V to 2.8V VS = 2.7V to 12.5V VO = 0.05V to 3.
PAGE 6
LT1215/LT1216 + –15V ELECTRICAL CHARACTERISTICS VS = ±15V, VCM = 0V, VOUT = 0V, 0°C ≤ TA ≤ 70°C, unless otherwise noted. SYMBOL VOS ∆VOS ∆T IOS IB PARAMETER Input Offset Voltage Input Offset Voltage Drift (Note 6) Input Offset Current Input Bias Current Input Voltage Range CONDITIONS CMRR PSRR AVOL Common Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing VCM = –14.9V to 12.9V VS = ±2.
PAGE 7
LT1215/LT1216 3.3V ELECTRICAL CHARACTERISTICS VS = 3.3V, VCM = 0.5V, VOUT = 0.5V, TA = 25°C, unless otherwise noted. (Note 8) SYMBOL PARAMETER VOS Input Offset Voltage Input Voltage Range (Note 10) IO CONDITIONS Maximum Output Voltage Swing Output High, No Load Output High, ISOURCE = 1mA Output High, ISOURCE = 30mA Output Low, No Load Output Low, ISINK = 1mA Output Low, ISINK = 30mA Maximum Output Current MIN 1.3 0 2.60 2.50 1.90 ±30 LT1215AC LT1215AM TYP MAX 125 300 1.5 – 0.2 2.69 2.60 2.05 0.005 0.
PAGE 8
LT1215/LT1216 ELECTRICAL CHARACTERISTICS Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: A heat sink may be required to keep the junction temperature below absolute maximum when the output is shorted indefinitely. Note 3: The LT1215C/LT1216C are guaranteed functional over the operating temperature range of – 40°C to 85°C. The LT1215M is guaranteed functional over the operating temperature range of – 55°C to 125°C.
PAGE 9
LT1215/LT1216 U W TYPICAL PERFOR A CE CHARACTERISTICS Voltage Gain, Phase vs Frequency CL = 20pF RL = 2k 120 PHASE VS = ±15V 60 VS = ±15V 40 20 GAIN 40 20 0 –20 0 CL = 20pF RL = 2k VS = 5V –20 1 10 100 10k 100k 1M 10M 100M FREQUENCY (Hz) 1k –20 100k –40 20 18 TA = 25°C, 125°C 17 50 20 10 3 5 7 10 20 TOTAL SUPPLY VOLTAGE (V) 1 1215/16 G12 Capacitive Load Handling AV = –2 RL = 10k TA = 125°C 60 TA = 25°C 45 35 VS = 5V 70 OVERSHOOT (%) SLEW RATE (V/µs) VS = 5V TA = –55°C 25
PAGE 10
LT1215/LT1216 U W TYPICAL PERFOR A CE CHARACTERISTICS Open-Loop Voltage Gain vs Supply Voltage Positive Output Saturation Voltage vs Temperature Open-Loop Gain, VS = 5V 7k 6k INPUT, 5µV/DIV OPEN-LOOP VOLTAGE GAIN (V/mV) RL = 2k TA = –55°C 5k TA = 25°C 4k 3k 2k RL = 500Ω TA = 125°C 0 1k 1 2 3 OUTPUT (V) 4 1215/16 G20 SATURATION VOLTAGE, V + – VOUT (V) 1.6 RL = 2k 0 4 0 8 12 16 20 24 28 32 TOTAL SUPPLY VOLTAGE (V) VS = 5V 1.4 ISOURCE = 30mA 1.2 1.0 ISOURCE = 10mA 0.8 ISOURCE = 1mA 0.
PAGE 11
LT1215/LT1216 U W TYPICAL PERFOR A CE CHARACTERISTICS 5V Large-Signal Response 5V Large-Signal Response 5V Small-Signal Response 3V 0V 0V 20mV/DIV 3V 50ns/DIV VS = 5V AV = 1 200ns/DIV VS = 5V AV = 1 1215/16 G34 ±15V Large-Signal Response 20mV/DIV ±15V Small-Signal Response VS = ±15V AV = 1 100ns/DIV VS = 5V AV = –1 RF = RG = 1k CF = 20pF 1215/16 G28 ±15V Large-Signal Response 10V 10V 0V 0V –10V –10V 50ns/DIV VS = ±15V AV = 1 1215/16 G34 200ns/DIV VS = ±15V AV = –1 RF = RG = 1k
PAGE 12
LT1215/LT1216 U W TYPICAL PERFOR A CE CHARACTERISTICS Supply Current vs Supply Voltage Supply Current vs Temperature TA = 125°C 5.5 5.0 TA = 25°C 4.5 4.0 TA = –55°C 3.5 3.0 2.
PAGE 13
LT1215/LT1216 U W U UO APPLICATI S I FOR ATIO Supply Voltage The LT1215/LT1216 op amps are fully functional and all internal bias circuits are in regulation with 2.2V of supply. The amplifiers will continue to function with as little as 1.5V, although the input common mode range and the phase margin are about gone. The minimum operating supply voltage is guaranteed by the PSRR tests which are done with the input common mode equal to 500mV and a minimum supply voltage of 2.5V.
PAGE 14
LT1215/LT1216 U W U UO APPLICATI S I FOR ATIO Inputs Typically at room temperature, the inputs of the LT1215/ LT1216 can common mode 400mV below ground (V –) and to within 1.5V of the positive supply with the amplifier still functional. However the input bias current and offset voltage will shift as shown in the characteristic curves. For full precision performance, the common mode range should be limited between ground (V –) and 2V below the positive supply.
PAGE 15
LT1215/LT1216 W U U UO APPLICATI S I FOR ATIO Comparator Applications following photos. These amplifiers are unity-gain stable op amps and not fast comparators, therefore, the logic being driven may oscillate due to the long transition time. The output can be speeded up by adding 20mV or more of hysteresis (positive feedback), but the offset is then a function of the input direction. Sometimes it is desirable to use an op amp as a comparator. When operating the LT1215/LT1216 on a single 3.
PAGE 16
LT1215/LT1216 U TYPICAL APPLICATIO Single Supply, AC Coupled Input, RMS Calibrated, Average Detector AC TO DC BIASED DIFFERENTIAL SIGNAL DIFFERENTIAL INPUT, ABSOLUTE VALUE CIRCUIT 5V DC OUTPUT VOLTAGE vs AC INPUT VOLTAGE 1000 22pF VS = 5V 20k 10k A LT1216 VB 2 × R2 20k R1 10k – B LT1216 R1 10k – 11.
PAGE 17
LT1215/LT1216 U PACKAGE DESCRIPTIO J8 Package 8-Lead CERDIP (Narrow .300 Inch, Hermetic) (Reference LTC DWG # 05-08-1110) CORNER LEADS OPTION (4 PLCS) 0.023 – 0.045 (0.584 – 1.143) HALF LEAD OPTION 0.045 – 0.068 (1.143 – 1.727) FULL LEAD OPTION 0.005 (0.127) MIN 0.405 (10.287) MAX 8 7 6 5 0.025 (0.635) RAD TYP 0.220 – 0.310 (5.588 – 7.874) 1 2 0.300 BSC (0.762 BSC) 3 4 0.200 (5.080) MAX 0.015 – 0.060 (0.381 – 1.524) 0.008 – 0.018 (0.203 – 0.
PAGE 18
LT1215/LT1216 U PACKAGE DESCRIPTIO N8 Package 8-Lead PDIP (Narrow .300 Inch) (Reference LTC DWG # 05-08-1510) 0.400* (10.160) MAX 8 7 6 5 1 2 3 4 0.255 ± 0.015* (6.477 ± 0.381) 0.300 – 0.325 (7.620 – 8.255) 0.065 (1.651) TYP 0.009 – 0.015 (0.229 – 0.381) ( +0.035 0.325 –0.015 8.255 +0.889 –0.381 0.130 ± 0.005 (3.302 ± 0.127) 0.045 – 0.065 (1.143 – 1.651) ) 0.125 (3.175) 0.020 MIN (0.508) MIN 0.018 ± 0.003 0.100 (2.54) BSC (0.457 ± 0.
PAGE 19
LT1215/LT1216 U PACKAGE DESCRIPTIO S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) 0.189 – 0.197* (4.801 – 5.004) 7 8 5 6 0.150 – 0.157** (3.810 – 3.988) 0.228 – 0.244 (5.791 – 6.197) 1 0.010 – 0.020 × 45° (0.254 – 0.508) 0.008 – 0.010 (0.203 – 0.254) 3 2 4 0.053 – 0.069 (1.346 – 1.752) 0.004 – 0.010 (0.101 – 0.254) 0°– 8° TYP 0.016 – 0.050 (0.406 – 1.270) 0.050 (1.270) BSC 0.014 – 0.019 (0.355 – 0.483) TYP *DIMENSION DOES NOT INCLUDE MOLD FLASH.
PAGE 20
LT1215/LT1216 U TYPICAL APPLICATIO LT1216 Photo Diode Amplifier TRANSIENT RESPONSE 5V + 2V 1/4 LT1216 VOUT – 5.1k 8pF 1215/16 TA03 I TO V BANDWIDTH = 7MHz 1215/16 TA05 RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LT1211/LT1212 Dual/Quad 14MHz, 7V/µs Single Supply Precision Op Amps Input Common Mode Includes Ground, 275µV VOS (Max), 6µV/°C Max Drift, 1.