ADA4859-3 Single-Supply, Fixed G = 2, High Speed, Video Amplifier with Charge Pump

The ADA4859-3 (triple) is a single-supply, high speed current feedback amplifier with an integrated charge pump that eliminates the need for negative supplies in order to output negative voltages or output a 0 V level for video applications. The 195 MHz, large signal −3 dB bandwidth at a fixed gain of 2, as well as the 740 V/μs slew rate, make this amplifier ideal for high resolution professional and consumer video applications. The amplifier also has a wide input common-mode voltage range that extends from 1.8 V below ground to 1.2 V below the positive rail at 5 V supply. Professional video Consumer video Imaging Active filters

This triple video amplifier is designed to operate on supply voltages of 3.3 V to 5 V, using only 38 mA total quiescent current, including the charge pump. To further reduce the power consumption, it is equipped with a power-down feature that lowers the total supply current to as low as 2 mA when the amplifier is not being used. Even in power-down mode, the charge pump can be used to power external components. The maximum output current for external use is 50 mA at −3 V.

The ADA4858-3 is available in a 16-lead LFCSP, and it is designed to work over the industrial temperature range of −40°C to +105°C.

Data Sheet, Rev. 0, 11/2008

Features and Benefits

Integrated charge pump
Supply range: 3 V to 5.5 V
Output range: −3.3 V to −1.8 V
50 mA maximum output current at −3 V for external use

High speed amplifiers
−3 dB bandwidth: 195 MHz
Slew rate: 740 V/μs
0.1 dB gain flatness: 60 MHz
0.1% settling time: 20 ns

Low power
Total quiescent current: 38 mA
Power-down feature

High input common-mode voltage range
−1.8 V to +3.8 V at +5 V supply

Current feedback architecture

Differential gain error: 0.01%

Differential phase error: 0.02°

Available in 16-lead LFCSP

Audio & Video Products

Video Op Amps

Amplifiers

Data Sheets

Document	note
ADA4859-3: Single-Supply, Fixed G=2, High Speed, Video Amplifier with Charge Pump Data Sheet (Rev. A)	PDF 436 kB

Application Notes

Document	note
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-140: Universal Evaluation Board for Triple, High Speed Op Amps with Charge Pump Offered in 16-Lead, 4 mm × 4 mm LFCSP Packages	PDF 283 kB

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
ADA4859-3ACPZ-R2 Production	16 ld LFCSP (4x4x.85mm, 2.10mm exposed pad)	REEL 250	-40 to 105C	2.29	2.29	Y
ADA4859-3ACPZ-R7 Production	16 ld LFCSP (4x4x.85mm, 2.10mm exposed pad)	REEL 1500	-40 to 105C	0	1.69	Y