LT6233-10 Linear Technology Corporation, LT6233-10 Datasheet

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LT6233-10

Manufacturer Part Number
LT6233-10
Description
60mhz, Rail-to-rail Output, 1.9nv/rthz, 1.2ma Op Amp Family
Manufacturer
Linear Technology Corporation
Datasheet
APPLICATIO S
FEATURES
TYPICAL APPLICATIO
, LTC and LT are registered trademarks of Linear Technology Corporation.
Low Noise Voltage: 1.9nV/ Hz
Low Supply Current: 1.2mA/Amp Max
Low Offset Voltage: 350 V Max
Gain Bandwidth Product:
LT6233: 60MHz; A
LT6233-10: 375MHz; A
Wide Supply Range: 3V to 12.6V
Output Swings Rail-to-Rail
Common Mode Rejection Ratio 115dB Typ
Output Current: 30mA
Operating Temperature Range – 40 C to 85 C
LT6233 Shutdown to 10 A Maximum
LT6233/LT6233-10 in SOT-23 Package
Dual LT6234 in 8-Pin SO and Tiny DFN Packages
LT6235 in 16-Pin SSOP Package
Ultrasound Amplifiers
Low Noise, Low Power Signal Processing
Active Filters
Driving A/D Converters
Rail-to-Rail Buffer Amplifiers
IN
IN
+
Low Noise Low Power Instrumentation Amplifier
R1
49.9
1/2 LT6234
1/2 LT6234
V
V
S
S
+
475
475
R2
R3
U
A
BW = 2.8MHz
V
V
S
V
= 20
= 1.5V to 5V
1
499
499
V
R4
R5
10
+
U
I
E
MEASUREMENT BW = 4MHz
LT6233
S
N
= 3mA
= 8 V
V
V
S
S
+
RMS
499
499
EN
R6
R7
INPUT REFERRED,
623345 TA01a
V
OUT
1.9nV/ Hz, 1.2mA Op Amp Family
DESCRIPTIO
The LT
noise, rail-to-rail output unity gain stable op amps that
feature 1.9nV/ Hz noise voltage and draw only 1.2mA of
supply current per amplifier. These amplifiers combine
very low noise and supply current with a 60MHz gain
bandwidth product, a 17V/ s slew rate and are optimized
for low supply voltage signal conditioning systems. The
LT6233-10 is a single amplifier optimized for higher gain
applications resulting in higher gain bandwidth and slew
rate. The LT6233 and LT6233-10 include an enable pin
that can be used to reduce the supply current to less than
10 A.
The amplifier family has an output that swings within
50mV of either supply rail to maximize the signal dynamic
range in low supply applications and is specified on 3.3V,
5V and 5V supplies. The e
amplifier is among the most noise efficient of any op amp.
The LT6233/LT6233-10 is available in the 6-lead SOT-23
package and the LT6234 dual is available in the 8-pin SO
package with standard pinouts. For compact layouts, the
dual is also available in a tiny dual fine pitch leadless
package (DFN). The LT6235 is available in the 16-pin
SSOP package.
®
60MHz, Rail-to-Rail Output,
6233/LT6234/LT6235 are single/dual/quad low
6
5
4
3
2
1
0
10
Noise Voltage and Unbalanced
Noise Current vs Frequency
LT6233/LT6233-10/
LT6233/LT6233-10/
U
100
FREQUENCY (Hz)
n
LT6234/LT6235
LT6234/LT6235
• I
1k
SUPPLY
NOISE VOLTAGE
NOISE CURRENT
10k
V
T
V
A
S
CM
= 25 C
= 2.5V
623345 TA01b
product of 2.1 per
= 0V
100k
sn623345 623345fas
6
5
4
3
2
1
0
1

Related parts for LT6233-10

LT6233-10 Summary of contents

Page 1

... The LT6233- single amplifier optimized for higher gain applications resulting in higher gain bandwidth and slew rate. The LT6233 and LT6233-10 include an enable pin that can be used to reduce the supply current to less than 10 A ...

Page 2

... LT6233/LT6233-10/ LT6234/LT6235 ABSOLUTE AXI U RATI GS + – Total Supply Voltage ( ............................ 12.6V Input Current (Note 2) ........................................ 40mA Output Short-Circuit Duration (Note 3) ............ Indefinite Operating Temperature Range (Note 4) ...– Specified Temperature Range (Note 5) ....– PACKAGE/ORDER I FOR ATIO TOP VIEW + OUT – ...

Page 3

... Minimum Supply Voltage (Note 7) V Output Voltage Swing LOW (Note Output Voltage Swing HIGH (Note Short-Circuit Current SC I Supply Current per Amplifier S Disabled Supply Current per Amplifier LT6233/LT6233-10 5V, 0V 3.3V, 0V CONDITIONS LT6233S6, LT6233S6-10 LT6234S8, LT6235GN LT6234DD 0.1Hz to 10Hz f = 10kHz, V ...

Page 4

... 1. LT6233-10 5V –10 1k 1. (Note 9) S OUT P-P LT6233-10 0 – STEP V L < temperature range 5V, 0V CONDITIONS LT6233S6, LT6233S6-10 LT6234S8, LT6235GN LT6234DD V = Half Supply ...

Page 5

... V = 1.5V to 3.5V O ENABLE = ENABLE = – 1k 1. LT6233-10 –10 1k 1. OUT P-P LT6233, LT6234, LT6235 < temperature range CONDITIONS LT6233S6, LT6233S6-10 LT6234S8, LT6235GN LT6234DD V ...

Page 6

... V = 1.5V to 3.5V O ENABLE = ENABLE = – 1k 1. LT6233-10 –10 1k 1. OUT P-P LT6233, LT6234, LT6235 CONDITIONS LT6233S6, LT6233S6-10 LT6234S8, LT6235GN LT6234DD 0.1Hz to 10Hz f = 10kHz f = 10kHz, R ...

Page 7

... ENABLE = ENABLE = Frequency = 1MHz LT6233- – 1k – LT6233-10 –10 1k – (Note 9) OUT P-P LT6233-10 0.1 2V – STEP V L LT6234/LT6235 MIN TYP MAX UNITS 2 180 V/mV ...

Page 8

... SOURCE I = 15mA SOURCE ENABLE = 4.75V ENABLE = 0.3V ENABLE = 4.75V ENABLE = ENABLE = – 1k – LT6233-10 –10 1k – OUT P-P LT6233, LT6234, LT6235 < MIN TYP MAX UNITS 600 V 450 ...

Page 9

... SOURCE I = 15mA SOURCE ENABLE = 4.8V ENABLE = 0.3V ENABLE = 4.8V ENABLE = ENABLE = – 1k – LT6233-10 –10 1k – OUT P-P LT6233, LT6234, LT6235 LT6233/LT6233-10/ LT6234/LT6235 < MIN TYP MAX UNITS 700 550 ...

Page 10

... LT6233/LT6233-10/ LT6234/LT6235 ELECTRICAL CHARACTERISTICS Note 1: Absolute maximum ratings are those values beyond which the life of the device may be impaired. Note 2: Inputs are protected by back-to-back diodes. If the differential input voltage exceeds 0.7V, the input current must be limited to less than 40mA. Note 3: A heat sink may be required to keep the junction temperature below the absolute maximum rating when the output is shorted indefinitely ...

Page 11

... 2. 1. TIME AFTER POWER-UP (s) 623345 G14 LT6233/LT6233-10/ LT6234/LT6235 Output Short Circuit Current vs Power Supply Voltage – 125 – 125 C A – – –60 ...

Page 12

... LT6233/LT6233-10/ LT6234/LT6235 W U TYPICAL PERFOR A CE CHARACTERISTICS (LT6233/LT6234/LT6235) Noise Voltage and Unbalanced Noise Current vs Frequency 2. NOISE VOLTAGE 2 1 NOISE CURRENT 0 10 100 1k 10k 100k FREQUENCY (Hz) 623345 G16 Open Loop Gain vs Frequency 5pF ...

Page 13

... OUT R = 100 , 2ND – 1k, 3RD 100 , 3RD L –70 – 1k, 2ND L –90 –100 10k 100k 1M 10M FREQUENCY (Hz) LT6233/LT6233-10/ LT6234/LT6235 Series Output Resistance and Overshoot vs Capacitive Load 5V ...

Page 14

... LT6233/LT6233-10/ LT6234/LT6235 W U TYPICAL PERFOR A CE CHARACTERISTICS (LT6233/LT6234/LT6235) Distortion vs Frequency – – (P–P) OUT R = 1k, 3RD L – 100 , 2ND L – 100 , 3RD L –70 – 1k, 2ND L –90 –100 10k 100k 1M FREQUENCY (Hz) 623345 G34 Large Signal Response 5V 0V – ...

Page 15

... Frequency 40dBc 10k 100k 1M FREQUENCY (Hz) LT6233/LT6233-10/ LT6234/LT6235 Series Output Resistance and Overshoot vs Capacitive Load 5V 105 125 10 100 1000 ...

Page 16

... LT6233/LT6233-10/ LT6234/LT6235 W U TYPICAL PERFOR A CE CHARACTERISTICS (LT6233-10 and 3 Harmonic Distortion vs Frequency – – (P–P) OUT R = 1k, 2ND L – 100 , 3RD 100 , 2ND L – 1k, 3RD L –70 –80 –90 –100 10k 100k 1M 10M FREQUENCY (Hz) ...

Page 17

... Noise The noise voltage of the LT6233/LT6234/LT6235 is equiva- lent to that of a 225 resistor, and for the lowest possible noise it is desirable to keep the source and feedback resistance at or below this value, i.e. R LT6233/LT6233-10/ LT6234/LT6235 0V 500 s/DIV 623345 F02 = 2.5V, A ...

Page 18

... W U For a complete discussion of amplifier noise, see the LT1028 data sheet. Enable Pin The LT6233 and LT6233-10 include an ENABLE pin that shuts down the amplifier maximum supply cur- rent. The ENABLE pin must be driven high to within 0.35V + shut down the supply current. This can be accomplished with simple gate logic ...

Page 19

... 511 – U1 LT6233-10 R15 + 88.7 EN R13 2k R4 R16 R12 + V 511 88.7 511 R14 C4 2k – LT6233- LT6233/LT6233-10/ LT6234/LT6235 Frequency Response Plot of Bandpass Filter 23 3 –7 100k 1M FREQUENCY (Hz) C8 68pF + R10 V 511 – OUT LT6233 + EN C9 68pF V = 100 (V – OUT ...

Page 20

... LT6233/LT6233-10/ LT6234/LT6235 PACKAGE DESCRIPTIO 0.62 0.95 MAX REF 3.85 MAX 2.62 REF RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.20 BSC DATUM ‘A’ 0.30 – 0.50 REF NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6 ...

Page 21

... SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON TOP AND BOTTOM OF PACKAGE U DD Package 8-Lead Plastic DFN (3mm 3mm) (Reference LTC DWG # 05-08-1698) 0.675 0.05 PACKAGE OUTLINE 0.50 BSC 2.38 0.05 (2 SIDES 0.115 3.00 0.10 1.65 0.10 (4 SIDES) (2 SIDES) 0.25 0.05 0.75 0.05 0.00 – 0.05 BOTTOM VIEW—EXPOSED PAD LT6233/LT6233-10/ LT6234/LT6235 0.38 0.10 TYP 5 8 (DD8) DFN 1203 4 1 0.50 BSC 2.38 0.10 (2 SIDES) sn623345 623345fas 21 ...

Page 22

... LT6233/LT6233-10/ LT6234/LT6235 PACKAGE DESCRIPTIO .050 BSC .245 MIN .030 .005 TYP RECOMMENDED SOLDER PAD LAYOUT .010 – .020 (0.254 – 0.508) .008 – .010 (0.203 – 0.254) (0.406 – 1.270) NOTE: 1. DIMENSIONS IN 2. DRAWING NOT TO SCALE 3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. ...

Page 23

... BSC .015 .004 45 .0532 – .0688 (0.38 0.10) (1.35 – 1.75) 0 – 8 TYP .008 – .012 (0.203 – 0.305) TYP LT6233/LT6233-10/ LT6234/LT6235 .189 – .196* (4.801 – 4.978) .009 (0.229 REF .150 – .157** (3.810 – 3.988) ...

Page 24

... LT6233/LT6233-10/ LT6234/LT6235 U TYPICAL APPLICATIO S The LT6233 is applied as a transimpedance amplifier with an I-to-V conversion gain of 10k set by R1. The LT6233 is ideally suited to this application because of its low input offset voltage and current, and its low noise. This is be- cause the 10k resistor has an inherent thermal noise of 13nV ...

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