The AD625 is a precision instrumentation amplifier specifically designed to fulfill two major areas of application: 1) Circuits requiring nonstandard gains (i.e., gains not easily achievable with devices such as the AD524 and AD624). 2) Circuits requiring a low cost, precision software programmable gain amplifier.

For low noise, high CMRR, and low drift the AD625JN is the most cost effective instrumentation amplifier solution available. An additional three resistors allow the user to set any gain from 1 to 10,000. The error contribution of the AD625JN is less than 0.05% gain error and under 5 ppm/°C gain TC; performance limitations are primarily determined by the external resistors. Common-mode rejection is independent of the feedback resistor matching.

A software programmable gain amplifier (SPGA) can be configured with the addition of a CMOS multiplexer (or other switch network), and a suitable resistor network. Because the ON resistance of the switches is removed from the signal path, an AD625 based SPGA will deliver 12-bit precision, and can be programmed for any set of gains between 1 and 10,000, with completely user selected gain steps.

For the highest precision the AD625C offers an input offset voltage drift of less than 0.25 µV/°C, output offset drift below 15 µV/°C, and a maximum nonlinearity of 0.001% at G = 1. All grades exhibit excellent ac performance; a 25 MHz gain bandwidth product, 5 V/µs slew rate and 15 µs settling time.

The AD625 is available in three accuracy grades (A, B, C) for industrial (-40°C to +85°C) temperature range, two grades (J, K) for commercial (0°C to +70°C) temperature range, and one (S) grade rated over the extended (-55°C to +125°C) temperature range.

Part#	Description	Single/Dual Supply	Vcc-Vee	Gain Setting Method	Bandwidth G=10 (kHz typ)	Gain min.	Gain max.	Min CMRR @ 60 Hz Min Gain	Min CMRR @ 60Hz Max Gain	Vnoise RTI 1-10 Hz µVp-p	Price* (1000-4999)
AD522	Diff Amp	Dual	10V to 36V	Resistor	3	1	1,000	75dB	100dB	4	-
AD524	Precision IA	Dual	12V to 36V	Pin	400	1	1,000	70dB	110dB	0.3	$9.52
AD526	Software Programmable	Dual	9V to 33V	Software	350	1	16	-	-	3	$6.39
AD620	General Purpose IA	Dual	4.6V to 36V	Resistor	800	1	10,000	73dB	110dB	0.28	$3.18
AD621	Precision IA	Dual	4.6V to 18V	Pin	800	10	100	93dB	110dB	0.28	$4.09
AD622	Low Cost IA	Dual	5.2V to 36V	Resistor	800	1	1,000	66dB	103dB	0.3	$2.51
AD623	S.S R-R IA	Single/Dual	2.7V to 12V	Resistor	100	1	1,000	70dB	105dB	2	$1.40
AD624	Precision IA	Dual	12V to 36V	Pin	400	1	1,000	70dB	110dB	0.3	$11.93
AD625	Programmable Gain IA	Dual	12V to 36V	Resistor	400	1	10,000	70dB	110dB	0.3	$8.78
AD626	Diff Amp	Single/Dual	2.4V to 12V	Pin	100	10	100	55dB	55dB	2	$3.70
AD627	Micropower IA	Single/Dual	2.2V to 36V	Resistor	30	5	1,000	77dB	77dB	1.2	$2.56
AD628	High CMV DA	Single/Dual	4.5V to 36V	Pin, Resistor	600	0.1	100	75dB	75dB	15	$1.78
AD629	High CMV DA	Dual	5V to 36V	fixed	500	-	-	77dB	77dB	15	$2.84
AD8129	Low Cost Diff Amp	Single/Dual	4.5V to 25V	Resistor	200000	10	-	94dB	-	-	$1.57
AD8202	High CMV DA	Single	3.5V to 12V	fixed	50	-	-	82dB	82dB	10	$1.51
AD8203	High CMV DA	Single	4.5V to 5.5V	fixed	60	-	-	82dB	82dB	10	$1.37
AD8205	S.S Diff Amp	Single	4.5V to 5.5V	fixed	50	-	-	78dB	78dB	20	$1.51
AD8206	S.S Diff Amp	Single	4.5V to 5.5V	fixed	100	-	-	76dB	76dB	20	$1.37
AD8210	Bi-Directional Shunt Mon	Single	4.5V to 5.5V	fixed	500	20	20	100dB	100dB	7	$1.81
AD8211	High CMV Shunt Mon	Single	4.5V to 5.5V	fixed	500	20	20	100dB	100dB	7	$0.81
AD8212	High CMV Shunt Mon	Single	7V to 65V	Resistor	1000	1	1,000	100dB	100dB	1.1	$0.93
AD8213	Dual High CMV Shunt Mon	Single	4.5V to 5.5V	fixed	500	20	20	100dB	100dB	7	$2.01
AD8214	High CMV Threshold Detec	Single	5V to 65V	Resistor	-	1	100	80dB	80dB	2.2	$0.76
AD8215	High CMV Shunt Mon	Single	4.5V to 5.5V	fixed	450	20	20	100dB	100dB	7	$1.21
AD8216	High BW 65 V Diff Amp	Single	4.5V to 5.5V	fixed	3000	3	3	80dB	80dB	20	$1.62
AD8220	R-R JFET IA	Single/Dual	4.6V to 36V	Resistor	800	1	1,000	78dB	94dB	0.8	$2.32
AD8221	High Performance IA	Dual	4.6V to 36V	Resistor	562	1	1,000	80dB	130dB	0.25	$2.01
AD8222	Dual High Performance IA	Dual	- to -	Resistor	750	1	10,000	80dB	130dB	0.25	$3.63
AD8223	S.S R-R IA	Single/Dual	3V to 25V	Pin	200	5	1,000	70dB	105dB	2	-
AD8224	Dual JFET R-R IA	Single/Dual	4.6V to 36V	Resistor	800	1	1,000	78dB	94dB	0.8	$4.17
AD8225	Fixed G=5 IA	Dual	3.4V to 36V	fixed	900	-	-	86dB	86dB	1.5	$3.29
AD8228	Precision IA	Dual	4.6V to 36V	Pin	650	10	100	100dB	120dB	0.5	$3.03
AD8230	Zero Drift IA	Single/Dual	8V to 16V	Resistor	2	2	1,000	-	110dB	3	$2.99
AD8231	Zero Drift Software Prog	Single	3V to 6V	Pin, Software	700	1	128	80dB	110dB	0.7	$1.71
AD8250	Software Programmable	Dual	10V to 34V	Pin, Software	3000	1	10	80dB	98dB	1	$5.01
AD8251	Software Programmable	Dual	10V to 34V	Pin, Software	2500	1	8	80dB	98dB	1.2	$5.01
AD8253	Software Programmable	Dual	10V to 34V	Pin, Software	10000	1	1,000	80dB	120dB	1	$4.95
AD8270	Dual Diff Amp	Dual	5V to 36V	Pin	10000	0.5	2	70dB	80dB	1	$1.89
AD8273	Dual Audio Diff Amp	Dual	5V to 36V	Pin	20000	0.5	2	77dB	-	2	$1.67
AD8274	-	-	5V to 36V	-	10000	0.5	2	-	-	-	$1.05
AD8290	Sensor Amp	-	2.6V to 5.5V	fixed	-	50	50	-	-	0.75	$1.52
AD8293G160	Zero Drift Filter Amp	Single	1.8V to 5.5V	fixed	0.5	160	160	94dB	94dB	0.7	$0.99
AD8293G80	Zero Drift Filter Amp	Single	1.8V to 5.5V	fixed	0.5	80	80	94dB	94dB	0.7	$0.99
AD8553	Zero Drift IA	Single	1.8V to 5.5V	Resistor	1	0.1	10,000	80dB	120dB	0.7	$1.32
AD8555	Sensor Amp	Single	5.5V to 2.7V	Software	n/a	70	1,280	80dB	96dB	0.5	$3.12
AD8556	Sen/Filter Amp	Single	2.7V to 5.5V	Software	n/a	70	1,280	80dB	94dB	0.5	$2.88
AD8557	Sensor Amp	Single	2.7V to 5.5V	Software	-	28	1,300	75dB	86dB	-	$2.13
AMP03	Precision Diff Amp	Dual	12V to 36V	fixed	3000	-	-	85dB	85dB	2	$2.81

* 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.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

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