The AD829 is a low noise (1.7 nV/√Hz), high speed op amp with custom compensation that provides the user with gains from ±1 to ±20 while maintaining a bandwidth greater than 50 MHz. The AD829's 0.04° differential phase and 0.02% differential gain performance at 3.58 MHz and 4.43 MHz, driving reverse-terminated 50 Ω or 75 Ω cables, makes it ideally suited for professional video applications. The AD829 achieves its 230V/µs uncompensated slew rate and 120 MHz gain bandwidth product while requiring only 5 mA of current from the power supplies.

The AD829's external compensation pin gives it exceptional versatility. For example, compensation can be selected to optimize the bandwidth for a given load and power supply voltage. As a gain-of-two line driver, the -3dB bandwidth can be increased to 95 MHz at the expense of 1 dB of peaking. In addition, the AD829's ouput can also be clamped at its external compensation pin.

The AD829 has excellent dc performance. It offers a minimum open-loop gain of 30 V/mV into loads as low as 500 Ω, low input voltage noise of 1.7 nV/√Hz, and a low input offset voltage of 1 mV maximum. Common-mode rejection and power supply rejection ratios are both 120 dB.

The AD829 is also useful in multichannel, high speed data conversion where its fast (90 ns to 0.1%) settling time is of importance. In such applicatons, the AD829 serves as an input buffer for 8-to-10-bit A/D converters and as an output I/V converter for high speed D/A converters.

The AD829 provides many of the same advantages that a transimpedance amplifier offers, while operating as a traditional voltage feedback amplifier. A bandwidth greater than 50 MHz can be maintained for a range of gains by changing the external compensation capacitor. The AD829 and the transimpedance amplifier are both unity gain stable and provide similar voltage noise performance (1.7 nV/√Hz). However, the current noise of the AD829 (1.5pA/√Hz) is less than 10% of the noise of transpedance amps. Furthermore, the inputs of the AD829 are symmetrical.

Part#	-3dB Bandwidth	Slew Rate	Min Stable Acl	Rail-Rail Out	Total Harmonic Dist.	Input Noise (nV/rtHz)	Vcc-Vee	Supply Current (max)	Features	Packages	Price* (1000-4999)
AD8051	110MHz	170V/µs	1V/V	Yes	68dB	16nV/rtHz	3V to 12V	5.5	Rail-to-Rail, Single Supply	SOIC, SOT	$0.86
AD8052	110MHz	170V/µs	1V/V	Yes	68dB	16nV/rtHz	3V to 12V	11	Rail-to-Rail, Single Supply	SOIC, SOP	$1.62
AD8091	110MHz	170V/µs	1V/V	Yes	71dB	16nV/rtHz	3V to 12V	5.5	Rail-to-Rail, Single Supply	SOIC, SOT	$0.70
AD8092	110MHz	170V/µs	1V/V	Yes	71dB	16nV/rtHz	3V to 12V	11	Rail-to-Rail, Single Supply	SOIC, SOP	$0.90
AD829	120MHz	230V/µs	1V/V	No	n/a	1.7nV/rtHz	9V to 36V	6.5	Comp Pin, Null	DIP, LCC, SOIC	$2.52
ADA4851-4	130MHz	375V/µs	1V/V	Yes	83dB	10nV/rtHz	2.7V to 12V	12.8	Rail-to-Rail, Single Supply	SOP	$1.10
ADA4851-2	130MHz	375V/µs	1V/V	Yes	83dB	10nV/rtHz	2.7V to 12V	6.4	Rail-to-Rail, Single Supply	SOP	$0.70
AD8054	150MHz	145V/µs	1V/V	Yes	68dB	16nV/rtHz	3V to 12V	13.6	Single Supply	SOIC, SOP	$2.88
AD8044	160MHz	190V/µs	1V/V	Yes	75dB	16nV/rtHz	3V to 12V	13.6	Rail-to-Rail, Single Supply	DIP, SOIC	$4.00
AD8041	170MHz	170V/µs	1V/V	Yes	72dB	16nV/rtHz	3V to 12V	6.5	Disable, Power Down, Rail-to-Rail, Single Supply	DIP, SOIC	$1.95
AD8042	170MHz	225V/µs	1V/V	Yes	73dB	15nV/rtHz	3V to 12V	14	Rail-to-Rail, Single Supply	DIP, SOIC	$2.05
ADA4850-1	175MHz	220V/µs	1V/V	Yes	81dB	10nV/rtHz	2.7V to 6V	2.9	Power Down, Rail-to-Rail, Single Supply	CSP	$0.56
ADA4850-2	175MHz	220V/µs	1V/V	Yes	n/a	10nV/rtHz	2.7V to 6V	5.6	Disable, Power Down, Rail-to-Rail, Single Supply	CSP	$0.70
AD8019	175MHz	400V/µs	1V/V	No	78dB	8nV/rtHz	8V to 24V	21	Power Down, Single Supply	SOIC, SOP	$3.10
AD8036	240MHz	1.2kV/µs	1V/V	No	66dB	6.7nV/rtHz	6V to 12V	21.5	Clamp Amp	DIP, SOIC	$3.46
AD8047	250MHz	750V/µs	1V/V	No	61dB	5.2nV/rtHz	6V to 12V	6.6	n/a	DIP, SOIC	$2.53
AD8079	260MHz	800V/µs	1V/V	No	65dB	2nV/rtHz	6V to 12V	11.5	Buffer	SOIC	$4.56
AD8055	300MHz	1.4kV/µs	1V/V	No	72dB	6nV/rtHz	8V to 12V	6.5	n/a	DIP, SOIC, SOT	$0.86
AD8056	300MHz	1.4kV/µs	1V/V	No	72dB	6nV/rtHz	8V to 12V	12	n/a	DIP, SOIC, SOP	$1.62
ADA4862-3	310MHz	830V/µs	1V/V	No	81dB	10.6nV/rtHz	5V to 12V	20.5	Disable, Power Down, Single Supply	SOIC	$0.96
AD8063	320MHz	650V/µs	1V/V	Yes	77dB	8.5nV/rtHz	2.7V to 8V	9.5	Disable, Power Down, Rail-to-Rail, Single Supply	SOIC, SOT	$0.86
AD8061	320MHz	650V/µs	1V/V	Yes	77dB	8.5nV/rtHz	2.7V to 8V	9.5	Rail-to-Rail, Single Supply	SOIC, SOT	$0.86
AD8062	320MHz	650V/µs	1V/V	Yes	77dB	8.5nV/rtHz	2.7V to 8V	19	Rail-to-Rail, Single Supply	SOIC, SOP	$1.62
AD9631	320MHz	1.3kV/µs	1V/V	No	72dB	7nV/rtHz	6V to 12V	18	n/a	DIP, SOIC	$3.81
AD8057	325MHz	1.15kV/µs	1V/V	No	85dB	7nV/rtHz	3V to 12V	7.5	Single Supply	SOIC, SOT	$0.86
AD8058	325MHz	1.15kV/µs	1V/V	No	85dB	7nV/rtHz	3V to 12V	15	Single Supply	SOIC, SOP	$1.62
AD8038	350MHz	425V/µs	1V/V	No	90dB	8nV/rtHz	3V to 12V	1.5	Disable, Power Down, Single Supply	SC70, SOIC	$0.86
AD8039	350MHz	425V/µs	1V/V	No	90dB	8nV/rtHz	3V to 12V	3	Single Supply	SOIC, SOT	$1.21
AD8021	490MHz	150V/µs	1V/V	No	93dB	2.1nV/rtHz	4.5V to 24V	7.7	Comp Pin, Disable, Power Down, Single Supply	SOIC, SOP	$1.31
ADA4860-1	520MHz	790V/µs	1V/V	No	-90dB	4nV/rtHz	5V to 12V	8	Disable, Power Down, Single Supply	SOT	$0.56
AD8074	600MHz	1.6kV/µs	1V/V	No	80dB	19.5nV/rtHz	9V to 11V	30	Buffer, Disable, Power Down, Single Supply	SOP	$2.22
ADA4861-3	730MHz	680V/µs	1V/V	No	85dB	3.2nV/rtHz	5V to 12V	20.5	Power Down, Single Supply	SOIC	$0.96
AD8045	1GHz	1350V/µs	1V/V	No	102dB	3nV/rtHz	3.3V to 12V	16	-	CSP, SOIC	$1.41

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
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