AD8629 Analog Devices, AD8629 Datasheet
AD8629
Specifications of AD8629
Available stocks
Related parts for AD8629
AD8629 Summary of contents
Page 1
... The AD8628 is available in tiny 5-lead TSOT, 5-lead SOT-23, and 8-lead narrow SOIC plastic packages. The AD8629 is available in the standard 8-lead narrow SOIC and MSOP plastic packages. The AD8630 quad amplifier is available in 14-lead narrow SOIC and 14-lead TSSOP plastic packages ...
Page 2
... Changes to Figure 43 and Figure 44............................................. 13 Changes to Figure 51...................................................................... 15 Updated Outline Dimensions....................................................... 20 Changes to Ordering Guide .......................................................... 20 10/04—Rev Rev. C Updated Formatting...........................................................Universal Added AD8629 ...................................................................Universal Added SOIC and MSOP Pin Configurations ................................1 Added Figure 48 ............................................................................. 13 Changes to Figure 62...................................................................... 17 Added MSOP Package ................................................................... 19 Changes to Ordering Guide .......................................................... 22 10/03— ...
Page 3
... T ≤ +125° kΩ L GBP e p kHz Rev Page AD8628/AD8629/AD8630 Min Typ Max 100 100 300 1.5 50 200 250 0 5 120 140 115 130 125 ...
Page 4
... 1 Table 2. Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current AD8628/AD8629 AD8630 Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Short-Circuit Limit ...
Page 5
... Junction Temperature Range Lead Temperature (Soldering, 60 sec) ESD AD8628 HBM 8-Lead SOIC FICDM 8-Lead SOIC FICDM 5-Lead TSOT MM 8-Lead SOIC ESD AD8629 HBM 8-Lead SOIC FICDM 8-Lead SOIC ESD AD8630 HBM 14-Lead SOIC FICDM 14-Lead SOIC FICDM 14-Lead TSSOP MM 14-Lead SOIC 1 Differential input voltage is limited to ± ...
Page 6
... AD8628/AD8629/AD8630 TYPICAL PERFORMANCE CHARACTERISTICS 180 V = 2.7V S 160 T = 25°C A 140 120 100 –2.5 –1.5 –0.5 0.5 INPUT OFFSET VOLTAGE (µV) Figure 5. Input Offset Voltage Distribution INPUT COMMON-MODE VOLTAGE (V) Figure 6. AD8628 Input Bias Current vs. Input Common-Mode Voltage ...
Page 7
... Figure 15. Open-Loop Gain and Phase vs. Frequency –10 –20 –30 150 200 10k Figure 16. Open-Loop Gain and Phase vs. Frequency Rev Page AD8628/AD8629/AD8630 T = 25° SUPPLY VOLTAGE (V) Figure 14. Supply Current vs. Supply Voltage 20pF ∞ ...
Page 8
... AD8628/AD8629/AD8630 100 –10 –20 –30 1k 10k 100k FREQUENCY (Hz) Figure 17. Closed-Loop Gain vs. Frequency 100 –10 –20 –30 1k 10k 100k FREQUENCY (Hz) Figure 18. Closed-Loop Gain vs. Frequency 300 V = 2.7V S 270 ...
Page 9
... Figure 26. Small Signal Overshoot vs. Load Capacitance OUT OUT OS Rev Page AD8628/AD8629/AD8630 V = ±2. 2kΩ 25°C A OS– OS+ 10 100 CAPACITIVE LOAD (pF ±2. – 10kΩ 0pF ...
Page 10
... AD8628/AD8629/AD8630 V = ±2. 1kHz @ ±3V p 0pF 10kΩ TIME (200µs/DIV) Figure 29. No Phase Reversal 140 V = 2.7V S 120 100 –20 –40 –60 100 1k 10k 100k FREQUENCY (Hz) Figure 30. CMRR vs. Frequency 140 120 100 80 60 ...
Page 11
... Figure 39. Voltage Noise Density at 2.7 V from kHz 120 V NOISE AT 1kHz = 22.1nV 105 Figure 40. Voltage Noise Density from 2.5 kHz Rev Page AD8628/AD8629/AD8630 = 2.7V S 0.5 1.0 1.5 2.0 FREQUENCY (kHz FREQUENCY (kHz 0.5 1.0 1.5 2.0 FREQUENCY (kHz) 2 ...
Page 12
... AD8628/AD8629/AD8630 120 NOISE AT 10kHz = 36.4nV 105 FREQUENCY (kHz) Figure 41. Voltage Noise Density from kHz 120 105 FREQUENCY (kHz) Figure 42. Voltage Noise Density from kHz ...
Page 13
... TEMPERATURE (°C) Figure 47. Output-to-Rail Voltage vs. Temperature 140 120 100 28mV p 150 175 1k Figure 48. AD8629/AD8630 Channel Separation vs. Frequency Rev Page AD8628/AD8629/AD8630 V = ±2. 10kΩ +2.5V R2 100Ω V+ V– – OUT V– ...
Page 14
... However, the AD8628/AD8629/AD8630 eliminate 1/f noise internally, thereby greatly reducing output errors. The internal elimination of 1/f noise is accomplished as follows. 1/f noise appears as a slowly varying offset to the AD8628/AD8629/ AD8630 inputs. Auto-zeroing corrects any dc or low frequency offset. Therefore, the 1/f noise component is essentially removed, leaving the AD8628/AD8629/AD8630 free of 1/f noise ...
Page 15
... PEAK-TO-PEAK NOISE Because of the ping-pong action between auto-zeroing and chopping, the peak-to-peak noise of the AD8628/AD8629/ AD8630 is much lower than the competition. Figure 50 and Figure 51 show this comparison. e p-p = 0.5µ 0.1Hz TO 10Hz TIME (1s/DIV) Figure 50. AD8628 Peak-to-Peak Noise e p-p = 2.3µ ...
Page 16
... The AD8628/AD8629/AD8630 have been designed so that internal settling occurs within two clock cycles after output saturation occurs. This results in a much shorter recovery time, less than 10 μ ...
Page 17
... Figure 62 shows a circuit that can amplify ac signals from 100 μV to 300 μ the levels, with a gain of 10,000 for accurate analog-to-digital conversion. 100µV TO 300µV DETECTOR = –50 V Figure 62. AD8629 Used as Preamplifier for Thermopile Rev Page AD8628/AD8629/AD8630 Positive Overload Negative Overload Recovery (μs) Recovery (μs) ...
Page 18
... OUTPUT AMPLIFIER FOR HIGH PRECISION DACS The AD8628/AD8629/AD8360 are used as output amplifiers for a 16-bit high precision DAC in a unipolar configuration. In this case, the selected op amp needs to have a very low offset voltage (the DAC LSB is 38 μ ...
Page 19
... Figure 67. 8-Lead Standard Small Outline Package [SOIC_N] 3.20 3.00 2.80 PIN 1 IDENTIFIER 0.95 0.85 0.75 0.55 10° 0.45 0.15 0.20 5° 0.35 BSC 0.05 0° COPLANARITY 0.10 Rev Page AD8628/AD8629/AD8630 5.00 (0.1968) 4.80 (0.1890 6.20 (0.2441) 1 5.80 (0.2284) 4 1.27 (0.0500) BSC 1.75 (0.0688) 1.35 (0.0532) 8° 0° 0.51 (0.0201) 0.31 (0.0122) 0.25 (0.0098) SEATING 0.17 (0.0067) PLANE COMPLIANT TO JEDEC STANDARDS MS-012-AA Narrow Body ...
Page 20
... AD8628/AD8629/AD8630 8.75 (0.3445) 8.55 (0.3366 6.20 (0.2441) 4.00 (0.1575) 1 5.80 (0.2283) 3.80 (0.1496) 7 1.27 (0.0500) BSC 1.75 (0.0689) 0.25 (0.0098) 1.35 (0.0531) 0.10 (0.0039) COPLANARITY SEATING 0.51 (0.0201) 0.10 PLANE 0.25 (0.0098) 0.31 (0.0122) 0.17 (0.0067) COMPLIANT TO JEDEC STANDARDS MS-012-AB CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. ...
Page 21
... W = Qualified for Automotive Applications. AUTOMOTIVE PRODUCTS The AD8628W/AD8629W/AD8630W models are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. Note that these automotive models may have specifications that differ from the commercial models; therefore, designers should review the Specifications section of this data sheet carefully. Only the automotive grade products shown are available for use in automotive applications ...
Page 22
... AD8628/AD8629/AD8630 NOTES Rev Page ...
Page 23
... NOTES AD8628/AD8629/AD8630 Rev Page ...
Page 24
... AD8628/AD8629/AD8630 NOTES ©2002–2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D02735-0-4/11(I) Rev Page ...