AD8045 3 nV/√Hz Ultralow Distortion Voltage Feedback High Speed Amplifier

The AD8045 is a unity-gain stable voltage feedback amplifier with ultralow distortion, low noise, and high slew rate. With a spurious-free dynamic range of −90 dBc at 20 MHz, the AD8045 is an ideal solution in a variety of applications, including ultrasound, automated test equipment (ATE), active filters, and analog-to-digital converter (ADC) drivers. The Analog Devices, Inc., proprietary next generation XFCB process and innovative architecture enable such high performance amplifiers.

The AD8045 features a low distortion pinout for the LFCSP, which improves second harmonic distortion and simplifies the layout of the circuit board.

The AD8045 has a 1 GHz bandwidth, a 1350 V/μs slew rate, and settles to 0.1% in 7.5 ns. With a wide supply voltage range (3.3 V to 12 V) and a low offset voltage (200 μV), the AD8045 is an ideal candidate for systems that require high dynamic range, precision, and high speed.

The AD8045 amplifier is available in a 3 mm × 3 mm LFCSP and the standard 8-lead SOIC. Both packages feature an exposed paddle that provides a low thermal resistance path to the printed circuit board (PCB). This enables more efficient heat transfer and increases reliability. The AD8045 works over the extended industrial temperature range (−40°C to +125°C).

Features and Benefits

Ultralow distortion

SFDR

−101 dBc at 5 MHz
−90 dBc at 20 MHz
−63 dBc at 70 MHz

−101 dBc at 5 MHz

−90 dBc at 20 MHz

−63 dBc at 70 MHz

Third-order intercept

43 dBm at 10 MHz

43 dBm at 10 MHz

Low noise

3 nV/√Hz
3 pA/√Hz

3 nV/√Hz

3 pA/√Hz

High speed

1 GHz, −3 dB bandwidth (G = +1)
1350 V/μs slew rate
7.5 ns settling time to 0.1%

1 GHz, −3 dB bandwidth (G = +1)

1350 V/μs slew rate

7.5 ns settling time to 0.1%

Standard and low distortion pinout

Supply current: 15 mA

Offset voltage: 1.0 mV max

Wide supply voltage range: 3.3 V to 12 V

Amplifiers

Audio & Video Products

Video Amplifiers & Analog Video Functions

SPICE Models

AD8045 SPICE Macro Model .CIR

Data Sheets

Document	note
AD8045: 3 nV/√Hz Ultra Low Distortion, High Speed Op Amp Data Sheet (Rev. B)	PDF 502.25 K

Application Notes

Document	note
AN-0993: Active Filter Evaluation Board for Analog Devices, Inc., - Low Distortion Pinout Op Amps (Rev. 0)	PDF 107 kB
AN-402: Replacing Output Clamping Op Amps with Input Clamping Amps	PDF 55 kB
AN-581: Biasing and Decoupling Op Amps in Single Supply Applications (Rev. 0)	PDF 166 kB
AN-417: Fast Rail-to-Rail Operational Amplifiers Ease Design Constraints in Low Voltage High Speed Systems	PDF 228 kB

User Guides

Document	note
UG-919: Universal Evaluation Board for Single, 8-Lead LFCSP Operational Amplifiers (Rev. 0)	PDF 196.34 K
UG-084: Evaluation Board for Single, High Speed Operational Amplifiers (8-Lead, SOIC with Dedicated Feedback Pin and Exposed Paddle)	PDF 243 kB

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
AD8045ACPZ-R2 Production	8 ld LFCSP (3x3mm 1.74x1.45mm EP)	REEL 250	-40 to 125C	2.38	2.38	Y
AD8045ACPZ-REEL7 Production	8 ld LFCSP (3x3mm 1.74x1.45mm EP)	REEL 1500	-40 to 125C	0	1.41	Y
AD8045ARDZ Production	8 ld SOIC-EP	OTH 98	-40 to 125C	1.74	1.48	Y
AD8045ARDZ-REEL7 Production	8 ld SOIC-EP	REEL 1000	-40 to 125C	0	1.48	Y

Evaluation Boards

Part Number	Description	Price	RoHS
EVAL-HSOPAMP-1CPZ	Evaluation Board for 8-LD LFCSP	18.25	Y
EVAL-HSOPAMP-1KSZ	Evaluation Bare Board for 5 and 6-lead SC70 Package	18.25	Y
EVAL-HSOPAMP-1RJZ	Evaluation Bare Board for SOT-23 Package	18.25	Y
EVAL-HSOPAMP-1RZ	Evaluation Bare Board for 8-lead SOIC Package	18.25	Y
EVAL-HSOPAMP-E-1RZ	Evaluation Bare Board for 8 Lead SOIC dedicated feedback with epad connection	18.25	Y
EVAL-HSOPAMP-N-1RZ	Evaluation Bare Board for 8 Lead SOIC w/Null or Compensation functionality on Pins 1 and or 8	18.25	Y