AD810

AD810 (Rev. B)

Document overview

• Manufacturer or author: Analog Devices, Inc.
• PDF pages: 22

Technical content

Low Power Video Op Amp with Disable Data Sheet AD810 Rev. B Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Tel: 781.329.4700 ©2019 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com

FEATURES

80 MHz typical −3 dB bandwidth (G = +1)

75 MHz typical −3 dB bandwidth (G = +2)

1000 V/µs typical slew rate

50 ns typical settling time to 0.1% (VOUT = 10 V step) Ideal for video applications 30 MHz typical 0.1 dB bandwidth (G = +2, VS = ±15 V) 0.02% typical differential gain (VS = ±15 V) 0.04° typical differential phase (VS = ±15 V) Low noise 2.9 nV/√Hz typical input voltage noise 13 pA/√Hz typical inverting input current noise Low power 8.0 mA maximum supply current (quiescent) 2.1 mA typical supply current (power-down mode) High performance disable function Turn off time: 100 ns typical Break before make guaranteed Input to output isolation of 64 dB (off state) Flexible operation Specified for ±5 V and ±15 V operation ±2.9 V typical output swing into a 150 Ω load (VS = ±5 V)

APPLICATIONS

Professional video cameras Multimedia systems NTSC-, PAL-, and SECAM-compatible systems Video line drivers ADC or DAC buffers DC restoration circuits CONNECTION DIAGRAM OFFSET NULL 1 –IN 2 +IN 3 –VS 4 DISABLE8 +VS7 OUTPUT6 OFSET NULL5 AD810 1737-001 Figure 1. GENERAL DESCRIPTION The AD810 is a composite and HDTV-compatible, current feedback, video operational amplifier, ideal for use in systems such as multimedia, digital tape recorders, and video cameras. The 0.1 dB flatness specification at a bandwidth of 30 MHz (G = +2) and the differential gain and phase of 0.02% and 0.04° (NTSC) make the AD810 ideal for any broadcast quality video system. All these specifications are under load conditions of 150 Ω (one 75 Ω back terminated cable). The AD810 is ideal for power sensitive applications such as video cameras, offering a low power supply current of 8.0 mA maximum. The disable feature reduces the power supply current to only 2.1 mA, while the amplifier is not in use, to conserve power. Furthermore, the AD810 is specified over a power supply range of ±5 V to ±15 V . The AD810 works well as an ADC or DAC buffer in video systems due to its unity gain (G = +1) −3 dB bandwidth of 80 MHz. Because the AD810 is a transimpedance amplifier, this bandwidth can be maintained over a wide range of gains while featuring a low noise of 2.9 nV/√Hz for wide dynamic range applications.

Rev. B | Page 3 of 22 SPECIFICATIONS TA = 25°C, supply voltage (VS) = ±15 V dc, load resistance (RL) = 150 Ω, unless otherwise noted. Table 1. AD810A 5962-9313201MPA1 Parameter Test Conditions/Comments Min Typ Max Min Typ Max Unit DYNAMIC PERFORMANCE −3 dB Bandwidth G = +2, feedback resistor (RF) = 715 Ω, VS = ±5 V 40 50 40 50 MHz G = +2, RF = 715 Ω, VS = ±15 V 55 75 55 75 MHz G = +1, RF = 1000 Ω, VS = ±15 V 40 80 40 80 MHz G = +10, RF = 270 Ω, VS = ±15 V 50 65 50 65 MHz 0.1 dB Bandwidth G = +2, RF = 715 Ω, VS = ±5 V 13 22 13 22 MHz G = +2, RF = 715 Ω, VS = ±15 V 15 30 15 30 MHz Full Power Bandwidth Output voltage (VOUT) = 20 V p-p RL = 400 Ω 16 8 16 MHz Slew Rate2 RL = 150 Ω, VS = ±5 V 350 175 350 V/µs RL = 400 Ω, VS = ±15 V 1000 500 1000 V/µs Settling Time to 0.1% 10 V step, G = −1 50 50 ns Settling Time to 0.01% 10 V step, G = −1 125 125 ns Total Harmonic Distortion f = 10 MHz, VOUT = 2 V p-p RL = 400 Ω, G = +2 −61 −61 dBc INPUT OFFSET VOLTAGE VS = ±5 V and ±15 V 1.5 6 1.5 6 mV TMIN to TMAX, VS = ±5 V and ±15 V 2 7.5 4 15 mV Offset Voltage Drift 7 15 µV/°C INPUT BIAS CURRENT Negative Input TMIN to TMAX, VS = ±5 V and ±15 V 0.7 5 0.8 5 µA Positive Input TMIN to TMAX, VS = ±5 V and ±15 V 2 7.5 2 10 µA OPEN-LOOP TRANSRESISTANCE TMIN to TMAX VOUT = ±10 V, RL = 400 Ω, VS = ±15 V 1.0 3.5 1.0 3.5 MΩ OPEN-LOOP DC VOLTAGE GAIN TMIN to TMAX VOUT = ±10 V, RL = 400 Ω, VS = ±15 V 86 100 80 100 dB VOUT = ±2.5 V, RL = 100 Ω, VS = ±5 V 76 88 72 88 dB COMMON-MODE REJECTION TMIN to TMAX Offset Voltage (VOS) Common-mode voltage (VCM) = ±12 V, VS = ±15 V 56 64 56 64 dB VCM = ±2.5 V, VS = ±5 V 52 60 50 60 dB POWER SUPPLY REJECTION VOS TMIN to TMAX, VS = ±4.5 V to ±18 V 65 72 60 72 dB INPUT VOLTAGE NOISE f = 1 kHz, VS = ±5 V and ±15 V 2.9 2.9 nV/√Hz INPUT CURRENT NOISE Negative input current (–IIN), f = 1 kHz, VS = ±5 V and ±15 V 13 13 pA/√Hz Positive input current (+IIN), f = 1 kHz, VS = ±5 V and ±15 V 1.5 1.5 pA/√Hz INPUT COMMON-MODE VOLTAGE RANGE VS = ±15 V ±12 ±13 ±12 ±13 V

Rev. B | Page 4 of 22 AD810A 5962-9313201MPA1 Parameter Test Conditions/Comments Min Typ Max Min Typ Max Unit OUTPUT CHARACTERISTICS Output Voltage Swing3 RL = 150 Ω, TMIN to TMAX, VS = ±5 V ±2.5 ±2.9 ±2.5 ±2.9 V RL = 400 Ω, VS = ±15 V ±12.5 ±12.9 ±12.5 ±12.9 V RL = 400 Ω, TMIN to TMAX, VS = ±15 V ±12 ±12 V Short-Circuit Current 150 150 mA Output Current TMIN to TMAX, VS = ±5 V and ±15 V 40 60 30 60 mA OUTPUT RESISTANCE Open loop (5 MHz) 15 15 Ω INPUT CHARACTERISTICS Input Resistance Positive input 2.5 10 2.5 10 MΩ Negative input 40 40 Ω Input Capacitance Positive input 2 2 pF DISABLE CHARACTERISTICS4 Off Isolation f = 5 MHz, see Figure 59 64 64 dB Off Output Resistance See Figure 15, RG is gain resistor (RF + RG)||13 pF (RF + RG)||13 pF Ω Turn On Time5 Output impedance (ZOUT) = low, see Figure 59 170 170 ns Turn Off Time ZOUT = high 100 100 ns DISABLE Pin Current DISABLE pin = 0 V, VS = ±5 V 50 75 50 75 µA DISABLE pin = 0 V, VS = ±15 V 290 400 290 400 µA Minimum DISABLE Pin Current to Disable TMIN to TMAX, VS = ±5 V and ±15 V 30 10 30 40 µA POWER SUPPLY Operating Range 25°C to TMAX ±2.5 ±18 ±2.5 ±18 V TMIN ±3.0 ±18 ±3.5 ±18 V Quiescent Current VS = ±5 V 6.7 7.5 6.7 7.5 mA VS = ±15 V 6.8 8.0 6.8 8.0 mA TMIN to TMAX, VS = ±5 V and ±15 V 8.3 10.0 9 11.0 mA Power-Down Current VS = ±5 V 1.8 2.3 1.8 2.3 mA VS = ±15 V 2.1 2.8 2.1 2.8 mA TEMPERATURE Operating Range (TMIN to TMAX) 1 See the Analog Devices military data sheet for 883B specifications. 2 Slew rate measurement is based on 10% to 90% rise time with the amplifier configured for a gain of −10. 3 Voltage swing is defined as useful operating range, not the saturation range. 4 Disable guaranteed break before make. 5 Turn on time is defined with ±5 V supplies using complementary output CMOS to drive the disable pin.

1 Internal short-circuit protection may not be sufficient to guarantee that the

maximum junction temperature is not exceeded under all conditions. PCB thermal design is required. resistance measured in a one-cubic foot sealed enclosure. Table 3. Thermal Resistance Figure 2. Total Power Dissipation vs. Ambient Temperature

0.1 dB of peaking in the gain vs. frequency response. 50 MHz on 5 V total supplies can be achieved. Table 5. −3 dB Bandwidth vs. Closed-Loop Gain and Table 6. −3 dB Bandwidth vs. Closed-Loop Gain and consistently optimal results. cable lengths is to be expected. optimizing the performance of a high frequency circuit. circuits that produce peaking in the amplifier response.

the output to zero at high closed-loop gains. Figure 47. Offset Null Configuration input to output isolation is greater than 65 dB at 1 MHz. AD810 operational in the enabled state. be extended to about 750 ns by using open-drain logic. somewhat dependent on the load impedance.

Figure 52. Video Line Driver Operating at Gain = +2 Figure 53. Closed-Loop Gain and Phase Shift vs. Frequency,

100 IRE

Figure 54. Differential Gain and Differential Phase vs. Supply Voltage Figure 55. Normalized Gain vs. Frequency for Various Supply Voltages, Figure 56. −3 dB Bandwidth vs. Supply Voltage, G = +2, RL = 150 Ω

REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. Figure 66. 8-Lead Standard Small Outline Package [SOIC_N] registered trademarks are t he property of their respective owners.