el5236 Intersil Corporation, el5236 Datasheet

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el5236

Manufacturer Part Number
el5236
Description
Dual Ultra Low Noise Wideband Amplifiers
Manufacturer
Intersil Corporation
Datasheet
Dual Ultra Low Noise Wideband Amplifiers
EL5236, EL5237
The EL5236 is a dual, low noise, 300MHz Gain Bandwidth
product Voltage Feedback Op Amp (VFA). The minimum operating
gain of 2 comes with a very low input noise voltage of 1.5nV/√ Hz
and 1.8pA/√Hz current noise. This makes this dual device ideal
for low noise differential active filters, dual channel photodiode
detectors, differential receivers with equalization, and any other
wideband, high dynamic range application.
Each channel requires only 5.8mA on a ±6V supply. Minimal
performance change over a supply range of ±2.5V to ±6V is
provided (or single +5V ->+12V). Where system power is
paramount, the EL5237 dual with disable allows the amplifiers
to be separately powered down to less than 20µA/Ch.
The 8 Ld dual EL5236 is available in the industry standard
pinout SO-8 or space saving MSOP-8. The 10 Ld EL5237 is
available in an MSOP-10.
March 31, 2011
FN7833.0
ISL5861IB
130MSPS
POWER
12-BIT
LOW
DAC
+3.3V
LOW POWER, LOW NOISE, DIFFERENTIAL DAC OUTPUT TRANSIMPEDANCE WITH A 5TH ORDER, 5MHz, BUTTERWORTH FILTER
20mA TO 0
0 TO 20mA
25
25
1
1.27nF
1.27nF
77
77
130pF
130pF
255
255
200
FIGURE 1. TYPICAL APPLICATION
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
100
270pF
100
270pF
½ ISL5236
½ ISL5236
1-888-INTERSIL or 1-888-468-3774
+
+
-
-
-5V
+5V
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
Features
• Bandwidth (-3dB) of 250MHz @ A
• Gain Bandwidth Product: 300MHz
• Voltage Noise: 1.5nV/√Hz
• Current Noise: 1.8pA/√Hz
• I
• 100mA I
• Fast Enable/Disable (EL5237 only)
Applications
• Differential ADC Driver
• Complementary DAC Output Driver
• Ultrasound Input Amplifiers
• AGC and PLL Active Filters
• Transimpedance Designs
Related Products
• ISL28290, Dual, 80MHz, 1nV/√Hz
• ISL55290, Dual, 700MHz, 1.1nV/√Hz
180pF
180pF
±
215
215
S
2.5V to
: 5.8mA/Channel
All other trademarks mentioned are the property of their respective owners.
OUT
±
6V Supply Range Operation
422
422
39pF
39pF
337
0.1µF
|
Copyright Intersil Americas Inc. 2011. All Rights Reserved
4.66k
422
+
422
+
30pF
-
-
30pF
+5V
-5V
½ ISL5236
½ ISL5236
+5V
V
= +2
DIFFERENTIAL
0V CENTERED
4V
P-P

Related parts for el5236

el5236 Summary of contents

Page 1

... Where system power is paramount, the EL5237 dual with disable allows the amplifiers to be separately powered down to less than 20µA/Ch. The 8 Ld dual EL5236 is available in the industry standard pinout SO-8 or space saving MSOP-8. The 10 Ld EL5237 is available in an MSOP-10. ...

Page 2

... TOP VIEW VOUTA 1 VINA VINA VS EL5237 (10 LD MSOP) TOP VIEW VINA+ 1 ENA 2 VS- 3 ENB 4 VINB EL5236, EL5237 Pin Descriptions EL5236 (8 Ld SOIC AND 8 Ld MSOP) 8 VS+ 7 VOUTB 6 VINB- 5 VINB+ 10 VINA- 9 VOUTA 8 VS+ VOUTB 7 VINB- 6 EL5237 PIN (10 Ld MSOP) NAME ...

Page 3

... RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb- free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), please see device information page for EL5236, EL5237. For more information on MSL please see techbrief TB363. ...

Page 4

... Average Offset Voltage Drift Input Bias Current Input Offset Current Input Impedance Input Capacitance Common-Mode Input Range Common-Mode Rejection Ratio Open-Loop Gain 4 EL5236, EL5237 Thermal Information (T = +25°C) A Thermal Resistance (Typical, Notes -0.3V, V +0. MSOP Package ...

Page 5

... V -3dB Bandwidth -3dB Bandwidth 2nd Harmonic Distortion 3rd Harmonic Distortion Voltage Noise Current Noise INPUT CHARACTERISTICS Input Offset Voltage Average Offset Voltage Drift Input Bias Current Input Offset Current 5 EL5236, EL5237 +6V -6V 500Ω SYMBOL CONDITIONS 500Ω ...

Page 6

... EN Pin Input High Voltage for Power-down EN Pin Input Low Voltage for Power-up NOTE: 6. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. 6 EL5236, EL5237 +2.5V -2.5V 500Ω ...

Page 7

... P-P P 10M FREQUENCY (Hz) FIGURE 4. NON-INVERTING LARGE SIGNAL RESPONSE 100 100 1k 10k 100k FREQUENCY (Hz) FIGURE 6. INPUT SPOT NOISE 7 EL5236, EL5237 V = ±6V, T ≈ +25° 100M 1G FIGURE 3. INVERTING SMALL SIGNAL FREQUENCY RESPONSE 9 100mV P-P P ...

Page 8

... R = 1kΩ 3rd HD(dBc) L -90 -100 -110 R = 200Ω 3rd HD(dBc) L -120 R = 500Ω 2nd HD(dBc) L -130 1M FREQUENCY (Hz) FIGURE 12. NON-INVERTING HD2 AND HD3 EL5236, EL5237 V = ±6V, T ≈ +25° - 3rd HD(dBc) V -30 -40 -50 -60 -70 -80 -90 -100 2nd HD(dBc) ...

Page 9

... RESPONSE VS = ±6V 2V/DIV FIGURE 16. NON-INVERTING OVERDRIVE RECOVERY 0.07 DIFF PHASE 0.06 0.05 0.04 0.03 0.02 DIFF GAIN 0. NUMBER OF 150Ω LOADS FIGURE 18. DIFFERENTIAL GAIN AND PHASE vs VIDEO LOADS 9 EL5236, EL5237 V = ±6V, T ≈ +25° +2V/ 2.50 2.00 1.50 1.00 0.50 0 -0.50 -1.00 ±200mV -1.50 -2.00 -2.50 FIGURE 15. INVERTING LARGE AND SMALL SIGNAL STEP RESPONSE FIGURE 17 ...

Page 10

... S 18 SUPPLY CURRENT OUTPUT CURRENT - TEMPERATURE (°C) FIGURE 22. SUPPLY CURRENT AND OUTPUT CURRENT OVER-TEMPERATURE FIGURE 24. NON-INVERTING TURN ON AND TURN OFF DELAY 10 EL5236, EL5237 V = ±6V, T ≈ +25° 120 -20 100 -40 -60 80 -80 -100 60 -120 -140 40 -160 ...

Page 11

... O 180 160 140 120 100 -I (mA (mA 2.5 3.0 3.5 4.0 4.5 SUPPLY VOLTAGE (±V) FIGURE 30. SUPPLY CURRENT vs SUPPLY VOLTAGE 11 EL5236, EL5237 V = ±6V, T ≈ +25° ± ± ± ± 100M 1G 1M FIGURE 27. INVERTING SMALL SIGNAL RESPONSE VS SUPPLY ...

Page 12

... FREQUENCY (Hz) FIGURE 32. NON-INVERTING SMALL SIGNAL RESPONSE vs GAIN 15 1V P-P 12 500mV P 10M FREQUENCY (Hz) FIGURE 34. NON-INVERTING LARGE SIGNAL RESPONSE 12 EL5236, EL5237 V = ±2.5V, T ≈ +25° 100M 1G 1M FIGURE 33. INVERTING SMALL SIGNAL RESPONSE vs GAIN 15 12 P-P 100mV ...

Page 13

... EL5236, EL5237 Getting the Lowest Noise A very low noise op amp like the EL5236 will only deliver a low output noise if the resistor values used to implement the design add a noise contribution that is also low. Figure 39 shows the full noise model for a non-inverting configuration. ...

Page 14

... Simpler designs are possible as shown in Figure 41. This is a single stage gain of 2 Butterworth filter with a 20MHz cutoff. Even with the 300MHz gain bandwidth product of the EL5236, this is a fairly high frequency filter to attempt with this relatively limited amplifier bandwidth margin. In this case, the 649Ω is also being set to get bias current cancellation for improved output DC precision along with the necessary gain of 2 setting for the design ...

Page 15

... Power Supply De-coupling and Layout Short feedback loop is essential in the layout of the op amp board as well as minimizing the capacitance around the inverting/non-inverting input pins and output pins. A 0.1µF ceramic capacitor placed close to the supply pins allows for proper supply de-coupling. 15 EL5236, EL5237 FN7833.0 March 31, 2011 ...

Page 16

... Intersil's product families address power management and analog signal processing functions complete list of Intersil product families. *For a complete listing of Applications, Related Documentation and Related Parts, please see the respective device information page on intersil.com: EL5236, EL5237 To report errors or suggestions for this datasheet, please go to: ...

Page 17

... Rev 0, 9/09 3.0±0.1 8 PIN 0.65 BSC TOP VIEW H 0.33 +0.07/ -0.08 0. SIDE VIEW 1 5.80 4.40 3.00 0.65 TYPICAL RECOMMENDED LAND PATTERN 17 EL5236, EL5237 A 0. 4.9±0.15 3.0±0.1 1.10 Max B 0.86±0.09 C SEATING PLANE 0.10 ± 0.05 0.10 C NOTES: 1. Dimensions are in millimeters. 2. Dimensioning and tolerancing conform to JEDEC MO-187-AA and AMSE Y14.5m-1994. ...

Page 18

... PIN 0.5 BSC TOP VIEW H 0.23 +0.07/ -0.08 0. SIDE VIEW 1 5.80 4.40 3.00 0.50 TYPICAL RECOMMENDED LAND PATTERN 18 EL5236, EL5237 A 0. 1.10 Max B 0.86 ± 0.09 C SEATING PLANE 0.10 ± 0.05 0.10 C NOTES: 1. Dimensions are in millimeters. 2. Dimensioning and tolerancing conform to AMSE Y14.5m-1994. 3. Plastic or metal protrusions of 0.15mm max per side are not included ...

Page 19

... M8.15E 8 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE Rev 0, 08/09 4 4.90 ± 0.10 PIN NO.1 ID MARK 5 1.27 TOP VIEW 1.75 MAX 0.175 ± 0.075 SIDE VIEW “A (1.27) (5.40) TYPICAL RECOMMENDED LAND PATTERN 19 EL5236, EL5237 A DETAIL "A" B 6.0 ± 0.20 3.90 ± 0.10 4 (0.35) x 45° 0.43 ± 0.076 0. 1.45 ± 0.1 (0.60) NOTES: (1.50) 1 ...

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