Datasheet ADA4625-1, ADA4625-2 (Analog Devices)

36 V, 18 MHz, Low Noise, Fast Settling Single Supply, RRO, JFET Op Amp Data Sheet ADA4625-1 /ADA4625-2 FEATURES PIN CONFIGURATION Wide gain bandwidth product: 18 MHz typical NC 1 ADA4625-1 8 NC High slew rate: 48 V/µs typical –IN 7 V+ Low voltage noise density: 3.3 nV/√Hz typical at 1 kHz 2 Low peak-to-peak noise: 0.15 µV p-p, 0.1 Hz to 10 Hz +IN 3 6 OUT TOP VIEW Low input bias current: ±15 pA typical at TA = 25°C V– 4 (Not to Scale) 5 NC Low offset voltage: ±80 µV maximum at TA = 25°C NOTES Offset voltage drift: ±1.2 µV/°C maximum at TA = −40°C to 85°C 1. NC = NO CONNECTION. DO NOT CONNECT TO THIS PIN.
001
2. EXPOSED PAD. CONNECT THE EXPOSED PAD TO GND, Fast settling: 0.01% in 700 ns typical V+ OR V– PLANE, OR LEAVE IT FLOATING.
15893-
Wide range of operating voltages
Figure 1.
Dual-supply operation: ±2.5 V to ±18 V
The ADA4625-1/ADA4625-2 are unity-gain stable, and there is
Single-supply operation: 5 V to 36 V
no phase reversal when input range exceeds either supply rail by
Input voltage range includes V−
200 mV. The output is capable of driving loads up to 1000 pF
Rail-to-rail output
and/or 600 Ω loads.
High capacitive load drive capability Output short-circuit current: ±46 mA
The ADA4625-1/ADA4625-2 are specified for operation over
No phase reversal
the extended industrial temperature range of −40°C to +125°C
Unity-gain stable
and operates from +5 V to +36 V (±2.5 V to ±18 V) with specifi- cations at +5 V and ±18 V. The devices are available in an 8-lead
APPLICATIONS
SOIC package with an exposed pad (EPAD).
PLL filter amplifiers 100 Transimpedance amplifiers VSY = 5V VSY = ±18V Photodiode sensor interfaces z) H Low noise charge amplifiers /√ (nV GENERAL DESCRIPTION SITY
The ADA4625-1/ADA4625-2 build on Analog Devices, Inc.,
EN 10
high voltage, single-supply, rail-to-rail output (RRO), precision
E D OIS
junction field effect transistor (JFET) input op amps, taking that
N
product type to a level of speed and low noise that has not been
GE
made available to the market previously.
VOLTA
The ADA4625-1/ADA4625-2 provide optimal performance in high voltage, high gain, and low noise applications. The input
1
157
1 10 100 1k 10k 100k
common-mode voltage range includes the negative supply, and
FREQUENCY (Hz)
15893- the output swings rail to rail. This enables the user to maximize Figure 2. Voltage Noise Density vs. Frequency dynamic input range in low voltage, single supply applications without the need for a separate negative voltage power supply
Table 1. Related Precision JFET Operational Amplifiers
for ground sense.
Single Dual Quad
The combination of wide bandwidth, low noise, and low input Not applicable AD823A Not applicable bias current makes the ADA4625-1/ADA4625-2 especially AD8510 AD8512 AD8513 suitable for phase-locked loop (PLL), active filter amplifiers and AD8610 AD8620 Not applicable for high tuning voltage (V ADA4610-1 ADA4610-2 ADA4610-4 TUNE), voltage controlled oscillators (VCOs) and preamplifiers where low level signals require an ADA4622-1 ADA4622-2 ADA4622-4 amplifier that provides both high amplification and wide ADA4627-1/ADA4637-1 Not applicable Not applicable bandwidth.
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Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION PIN CONFIGURATION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ELECTRICAL CHARACTERISTICS—±18 V OPERATION ELECTRICAL CHARACTERISTICS—5 V OPERATION ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION INPUT AND GAIN STAGES OUTPUT STAGE NO PHASE INVERSION SUPPLY CURRENT APPLICATIONS INFORMATION ACTIVE LOOP FILTER FOR PHASE-LOCKED LOOPS (PLLS) PLL Basic Loop Filter ADA4625-1 ADVANTAGES AND DESIGN EXAMPLE TRANSIMPEDANCE AMPLIFIER Design Example DAC OUTPUT DRIVER RECOMMENDED POWER SOLUTION INPUT OVERVOLTAGE PROTECTION DRIVING CAPACITIVE LOADS THERMAL MANAGEMENT TYPICAL APPLICATIONS OUTLINE DIMENSIONS ORDERING GUIDE