Datasheet AD8031, AD8032 (Analog Devices)

2.7 V, 800 μA, 80 MHz Rail-to-Rail I/O Amplifiers Data Sheet AD8031/ AD8032 FEATURES CONNECTION DIAGRAMS Low power NC 1 8 NC OUT1 1 AD8032 8 +VS Supply current 800 μA/amplifier –IN 2 – 7 +VS –IN1 2 7 OUT2 – + Fully specified at +2.7 V, +5 V, and ±5 V supplies +IN 3 + 6 OUT +IN1 3 6 –IN2 + –
02
–V
0
S 4 AD8031 5 NC –V 5 +IN2
6-
High speed and fast settling on 5 V
-001
S 4
05
NC = NO CONNECT
01
80 MHz, −3 dB bandwidth (G = +1)
01056 Figure 1. 8-Lead PDIP (N) and Figure 2. 8-Lead PDIP (N),
30 V/μs slew rate
SOIC_N (R) SOIC_N (R), and MSOP (RM)
125 ns settling time to 0.1% Rail-to-rail input and output AD8031 VOUT 1 5 +VS No phase reversal with input 0.5 V beyond supplies –V Input CMVR extends beyond rails by 200 mV S 2 + –
3
Output swing to within 20 mV of either rail +IN 3 4 –IN
-00 6 05
Low distortion
01 Figure 3. 5-Lead SOT-23 (RJ-5)
−62 dB @ 1 MHz, VO = 2 V p-p −86 dB @ 100 kHz, V O = 4.6 V p-p Output current: 15 mA
Operating on supplies from +2.7 V to +12 V and dual supplies
High grade option: VOS (maximum) = 1.5 mV
up to ±6 V, the AD8031/AD8032 are ideal for a wide range of

applications, from battery-operated systems with large bandwidth
APPLICATIONS
requirements to high speed systems where component density
High speed, battery-operated systems
requires lower power dissipation. The AD8031/AD8032 are
High component density systems
available in 8-lead PDIP and 8-lead SOIC_N packages and operate over the industrial temperature range of −40°C to
Portable test instruments
+85°C. The AD8031A is also available in the space-saving
A/D buffers
5-lead SOT-23 package, and the AD8032A is available in an
Active filters
8-lead MSOP package.
High speed, set-and-demand amplifiers VIN = 4.85V p-p VOUT = 4.65V p-p G = +1 GENERAL DESCRIPTION
The AD8031 (single) and AD8032 (dual) single-supply, voltage
IV IV /D /D
feedback amplifiers feature high speed performance with
1V 1V
80 MHz of small signal bandwidth, 30 V/μs slew rate, and 125 ns settling time. This performance is possible while consuming less than 4.0 mW of power from a single 5 V supply. These features 4 00 6- 6-005
2µs/DIV
05
2µs/DIV
05 increase the operation time of high speed, battery-powered 01 01 Figure 4. Input VIN Figure 5. Output VOUT systems without compromising dynamic performance.
+5V
The products have true single-supply capability with rail-to-rail
–
input and output characteristics and are specified for +2.7 V, +5 V,
VOUT VIN +
6 and ±5 V supplies. The input voltage range can extend to 500 mV
1kΩ 1.7pF
00 6-
+2.5V
05 beyond each rail. The output voltage swings to within 20 mV of 01 each rail providing the maximum output dynamic range. Figure 6. Rail-to-Rail Performance at 100 kHz The AD8031/AD8032 also offer excellent signal quality for only 800 μA of supply current per amplifier; THD is −62 dBc with a 2 V p-p, 1 MHz output signal, and –86 dBc for a 100 kHz, 4.6 V p-p signal on +5 V supply. The low distortion and fast settling time make them ideal as buffers to single-supply ADCs.
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Document Outline Features Applications General Description Connection Diagrams Table of Contents Revision History Specifications +2.7 V Supply +5 V Supply ±5 V Supply Absolute Maximum Ratings Maximum Power Dissipation ESD Caution Typical Performance Characteristics Theory of Operation Input Stage Operation Overdriving the Input Stage Output Stage, Open-Loop Gain and Distortion vs. Clearance from Power Supply Output Overdrive Recovery Driving Capacitive Loads Applications A 2 MHz Single-Supply, Biquad Band-Pass Filter High Performance, Single-Supply Line Driver Outline Dimensions Ordering Guide