Datasheet AD8665, AD8666, AD8668 (Analog Devices)

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16 V, 4 MHz RR0 Amplifiers AD8665/ AD8666/ AD8668 FEATURES PIN CONFIGURATIONS Offset voltage: 2.5 mV max Low input bias current: 1 pA max OUT 1 5 V+ AD8665 Single-supply operation: 5 V to 16 V V– 2 TOP VIEW (Not to Scale) Dual-supply operation: ±2.5 V to ±8 V
039
+IN 3 4 –IN Low noise: 8 nV/√Hz @ 10 kHz
06195-
Wide bandwidth: 4 MHz
Figure 1. AD8665, 5-Lead SOT-23 (RJ-5)
Rail-to-rail output Unity-gain stable NC 1 8 NC Lead-free packaging –IN 2 AD8665 7 VCC AD8666/AD8668 qualified for automotive applications +IN 3 TOP VIEW 6 OUT VEE (Not to Scale) 4 5 NC
040
APPLICATIONS NC = NO CONNECT
06195-
Sensor amplification
Figure 2. AD8665, 8-Lead SOIC_N (R-8)
Reference buffers Medical equipment OUT A 1 8 V+ Physiological measurements –IN A 2 AD8666 7 OUT B Signal filters and conditioning +IN A 3 TOP VIEW 6 –IN B
001
V– (Not to Scale) 4 5 +IN B Consumer audio
06018-
Photodiode amplification
Figure 3. AD8666, 8-Lead SOIC_N (R-8)
ADC driver Level shifting circuits OUT A 1 8 V+ –IN A 2 7 AD8666 OUT B GENERAL DESCRIPTION +IN A 3 TOP VIEW 6 –IN B (Not to Scale)
002 The AD866x family is single supply, rail-to-rail output
V– 4 5 +IN B
06195- amplifiers with low noise performance featuring an extended Figure 4. AD8666, 8-Lead MSOP (RM-8) operating range with supply voltages up to 16 V. They also feature low input bias currents, wide signal bandwidth, and low
1 OUT A 14 OUT D
input voltage and current noise. For lower offset voltage, choose
2 IN A 13 –IN D
the AD8661/AD8662/AD8664 family.
+IN A 3 AD8668 12 +IN D
The combination of low offsets, very low input bias currents,
TOP VIEW V+ 4 11 V– (Not to Scale)
and wide supply range make these amplifiers useful in a wide
+IN B 5 10 +IN C
variety of cost sensitive applications normally associated with
–IN B 6 9 –IN C
much higher priced JFET amplifiers. Systems using high 003
OUT B 7 8 OUT C
06195- impedance sensors, such as photo diodes, benefit from the Figure 5. AD8668, 14-Lead TSSOP (RU-14) combination of low input bias current, low noise, and low offset and bandwidth. The wide operating voltage range matches high
OUT U A 1 14 OUT D
performance ADCs and DACs. Audio applications and medical
–IN A 2 13 –IN D
monitoring equipment can take advantage of the high input
+IN A 3 12 +IN D AD A 864 668
impedance, low voltage and current noise, wide bandwidth, and
V+ 4 TOP VI V E I W E 11 V– (No N t to t Sca S le)
the lack of popcorn noise found in many other low input bias
+IN B 5 10 +IN C 9
current amplifiers.
–IN B 6 –IN C
004
OUT B 7 8 OUT C
The AD866x family is specified over the extended industrial 06195- Figure 6. AD8668, 14-Lead SOIC_N (R-14) temperature range (−40°C to +125°C). See the Ordering Guide for automotive models.
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Document Outline Features Applications General Description Pin Configurations Revision History Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Typical Performance Characteristics Outline Dimensions Ordering Guide