Analog Devices AD558JD, AD558TD, AD558SD, AD558KN, AD558KD Datasheet

a		DACPORT Low Cost, Complete
		μP-Compatible 8-Bit DAC
		AD558*

FEATURES Complete 8-Bit DAC

Voltage Output–2 Calibrated Ranges Internal Precision Bandgap Reference Single-Supply Operation: +5 V to +15 V Full Microprocessor Interface

Fast: 1 ms Voltage Settling to 61/2 LSB

Low Power: 75 mW No User Trims

Guaranteed Monotonic Over Temperature

All Errors Specified TMIN to TMAX

Small 16-Pin DIP and 20-Pin PLCC Packages Single Laser-Wafer-Trimmed Chip for Hybrids Low Cost

MIL-STD-883 Compliant Versions Available

FUNCTIONAL BLOCK DIAGRAM

CONTROL

DIGITAL INPUT DATA (BUS)

	INPUTS
GND	CS CE LSBDB0		DB1	DB2 DB3	DB4 DB5	DB6	DB7	MSB +VCC
	I2L			I2L LATCHES
	CONTROL
	LOGIC	LSB					MSB
		8-BIT VOLTAGE-SWITCHING						OUTPUT
								AMP
	CONTROL		D-TO-A CONVERTER					VOUT
	AMP							VOUTSENSE A
				BAND -				VOUTSELECT
				GAP
				REFERENCE
	AD558							GND

PRODUCT DESCRIPTION

The AD558 DACPORT® is a complete voltage-output 8-bit digital-to-analog converter, including output amplifier, full microprocessor interface and precision voltage reference on a single monolithic chip. No external components or trims are required to interface, with full accuracy, an 8-bit data bus to an analog system.

The performance and versatility of the DACPORT is a result of several recently-developed monolithic bipolar technologies. The complete microprocessor interface and control logic is implemented with integrated injection logic (I2L), an extremely dense and low power logic structure that is process-compatible with linear bipolar fabrication. The internal precision voltage reference is the patented low voltage bandgap circuit which permits fullaccuracy performance on a single +5 V to +15 V power supply. Thin-film silicon-chromium resistors provide the stability required for guaranteed monotonic operation over the entire operating temperature range (all grades), while recent advances in laser-wafer-trimming of these thin-film resistors permit absolute calibration at the factory to within ±1 LSB; thus no user-trims for gain or offset are required. A new circuit design provides voltage settling to ±1/2 LSB for a full-scale step in 800 ns.

The AD558 is available in four performance grades. The AD558J and K are specified for use over the 0°C to +70°C temperature range, while the AD558S and T grades are specified for –55°C to +125°C operation. The “J” and “K” grades are available either in 16-pin plastic (N) or hermetic ceramic (D) DIPS. They are also available in 20-pin JEDEC standard PLCC packages. The “S” and “T” grades are available in the 16-pin hermetic ceramic DIP package.

*Protected by U.S. Patent Nos. 3,887,863; 3,685,045; 4,323,795; Patents Pending.

DACPORT is a registered trademark of Analog Devices, Inc.

REV. A

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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

PRODUCT HIGHLIGHTS

1.The 8-bit I2L input register and fully microprocessorcompatible control logic allow the AD558 to be directly connected to 8- or 16-bit data buses and operated with standard control signals. The latch may be disabled for direct DAC interfacing.

2.The laser-trimmed on-chip SiCr thin-film resistors are calibrated for absolute accuracy and linearity at the factory. Therefore, no user trims are necessary for full rated accuracy over the operating temperature range.

3.The inclusion of a precision low voltage bandgap reference eliminates the need to specify and apply a separate reference source.

4.The voltage switching structure of the AD558 DAC section along with a high speed output amplifier and laser trimmed resistors give the user a choice of 0 V to +2.56 V or 0 V to +10 V output ranges, selectable by pin-strapping. Circuitry is

internally compensated for minimum settling time on both ranges; typically settling to ±1/2 LSB for a full-scale 2.55 volt step in 800 ns.

5.The AD558 is designed and specified to operate from a single +4.5 V to +16.5 V power supply.

6.Low digital input currents, 100 μA max, minimize bus loading. Input thresholds are TTL/low voltage CMOS compatible over the entire operating VCC range.

7.All AD558 grades are available in chip form with guaranteed specifications from +25°C to TMAX. MIL-STD-883, Class B visual inspection is standard on Analog Devices bipolar chips. Contact the factory for additional chip information.

8.The AD558 is available in versions compliant with MIL- STD-883. Refer to Analog Devices Military Products Databook or current AD558/883B data sheet for detailed specifications.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: [phone] Fax: [phone]

AD558–SPECIFICATIONS (@ TA = +258C, VCC = +5 V to +15 V unless otherwise noted)

Model		AD558J			AD558K		AD558S1			AD558T1
	Min	Typ	Max	Min	Typ	Max	Min Typ	Max	Min	Typ	Max	Units
RESOLUTION			8			8		8			8	Bits
RELATIVE ACCURACY2
0°C to +70°C			±1/2			±1/4		±1/2			±1/4	LSB
–55°C to +125°C								±3/4			±3/8	LSB
OUTPUT
Ranges3		0 to +2.56			0 to +2.56		0 to +2.56			0 to +2.56		V
		0 to +10			0 to +10		0 to +10			0 to +10		V
Current Source	+5			+5			+5		+5			mA
Sink		Internal Passive			Internal Passive		Internal Passive			Internal Passive
		Pull-Down to Ground4			Pull-Down to Ground		Pull-Down to Ground			Pull-Down to Ground
OUTPUT SETTLING TIME5												μs
0 to 2.56 Volt Range		0.8	1.5		0.8	1.5	0.8	1.5		0.8	1.5
0 to 10 Volt Range4		2.0	3.0		2.0	3.0	2.0	3.0		2.0	3.0	μs
FULL-SCALE ACCURACY6
@ 25°C			61.5			60.5		61.5			60.5	LSB
TMIN to TMAX			62.5			61		62.5			61	LSB
ZERO ERROR
@ 25°C			61			61/2		61			61/2	LSB
TMIN to TMAX			62			61		62			61	LSB
MONOTONICITY7
TMIN to TMAX		Guaranteed			Guaranteed		Guaranteed			Guaranteed
DIGITAL INPUTS
TMIN to TMAX			±100			±100		±100				μA
Input Current											100
Data Inputs, Voltage
Bit On-Logic “1”	2.0			2.0			2.0		2.0			V
Bit On-Logic “0”	0		0.8	0			0		0			V
Control Inputs, Voltage
On-Logic “1”	2.0			2.0			2.0		2.0			V
On-Logic “0”	0		0.8	0		0.8	0	0.8	0		0.8	V
Input Capacitance		4			4		4			4		pF
TIMING8
tW, Strobe Pulse Width	200			200			200		200			ns
TMIN to TMAX	270			270			270		270			ns
tDH Data Hold Time	10			10			10		10			ns
TMIN to TMAX	10			10			10		10			ns
tDS Data Set-Up Time	200			200			200		200			ns
TMIN to TMAX	270			270			270		270			ns
POWER SUPPLY
Operating Voltage Range (VCC)
2.56 Volt Range	+4.5		+16.5	+4.5		+16.5	+4.5	+16.5	+4.5		+16.5	V
10 Volt Range	+11.4		+16.5	+11.4		+16.5	+11.4	+16.5	+11.4		+16.5	V
Current (ICC)		15	25		15	25	15	25		15	25	mA
Rejection Ratio			0.03			0.03		0.03			0.03	%/%
POWER DISSIPATION, VCC = 5 V		75	125		75	125	75	125		75	125	mW
VCC = 15 V		225	375		225	375	225	375		225	375	mW
OPERATING TEMPERATURE RANGE	0		+70	0		+70	–55	+125	–55		+125	°C

NOTES

1The AD558 S & T grades are available processed and screened lo MIL-STD-883 Class B. Consult Analog Devices’ Military Databook for details.

2Relative Accuracy is defined as the deviation of the code transition points from the ideal transfer point on a straight line from the offset to the full scale of the device. See “Measuring Offset Error”.

3Operation of the 0 volt to 10 volt output range requires a minimum supply voltage of +11.4 volts. 4Passive pull-down resistance is 2 kΩ for 2.56 volt range, 10 kΩ for 10 volt range.

5Settling time is specified for a positive-going full-scale step to ± 1/2 LSB. Negative-going steps to zero are slower, but can be improved with an external pull-down. 6The full range output voltage for the 2.56 range is 2.55 V and is guaranteed with a +5 V supply, for the 10 V range, it is 9.960 V guaranteed with a +15 V supply. 7A monotonic converter has a maximum differential linearity error of ± 1 LSB.

8See Figure 7.

Specifications shown in boldface are tested on all production units at final electrical test. Specifications subject to change without notice.

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REV. A

AD558

ABSOLUTE MAXIMUM RATINGS*

VCC to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V to +18 V Digital Inputs (Pins 1–10) . . . . . . . . . . . . . . . . . . 0 V to +7.0 V

VOUT . . . . . . . . . . . . . . . . . . . . . . . Indefinite Short to Ground Momentary Short to VCC

Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450 mW Storage Temperature Range

N/P (Plastic) Packages . . . . . . . . . . . . . . . . –25°C to +100°C D (Ceramic) Package . . . . . . . . . . . . . . . . . –55°C to +150°C Lead Temperature (soldering, 10 sec) . . . . . . . . . . . . . +300°C

Thermal Resistance

Junction to Ambient/Junction to Case

D (Ceramic) Package . . . . . . . . . . . . . . 100°C/W/30°C/W N/P (Plastic) Packages . . . . . . . . . . . . . 140°C/W/55°C/W

*Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

AD558 METALIZATION PHOTOGRAPH

Dimensions shown in inches and (mm).

	(LSB) DB0	1		16	VOUT
	DB1	2		15	VOUT SENSE
	DB2	3		14	VOUT SELECT
	DB3	4	AD558 13		GND
	DB4	5	TOP VIEW	12	GND
			(Not to Scale)
	DB5	6		11	+VCC
	DB6	7		10	CS
	(MSB) DB7	8		9	CE

Figure 1a. AD558 Pin Configuration (DIP)

			(LSB)			OUT		SENSE
		DB1		NC				OUT
			DB0		V			V
		3	2	1	20		19
											VOUTSELECT
DB2	4								18
DB3	5		AD558						17		GND
NC	6		TOP VIEW						16		NC
DB4	7	(Not to Scale)							15		GND
DB5	8								14		+VCC
		9	10	11 12			13
		DB6	DB7	NC		CE		CS
			(MSB)						NC = NO CONNECT

Figure 1b. AD558 Pin Configuration (PLCC and LCC)

ORDERING GUIDE

		Relative Accuracy	Full-Scale
		Error Max	Error, Max	Package
Model1	Temperature	TMIN to TMAX	TMIN to TMAX	Option2
AD558JN	0°C to +70°C	±1/2 LSB	±2.5 LSB	Plastic (N-16)
AD558JP	0°C to +70°C	±1/2 LSB	±2.5 LSB	PLCC (P-20A)
AD558JD	0°C to +70°C	±1/2 LSB	±2.5 LSB	TO-116 (D-16)
AD558KN	0°C to +70°C	±1/4 LSB	±1 LSB	Plastic (N-16)
AD558KP	0°C to +70°C	±1/4 LSB	±1 LSB	PLCC (P-20A)
AD558KD	0°C to +70°C	±1/4 LSB	±1 LSB	TO-116 (D-16)
AD558SD	–55°C to +125°C	±3/4 LSB	±2.5 LSB	TO-116 (D-16)
AD558TD	–55°C to +125°C	±3/8 LSB	±1 LSB	TO-116 (D-16)

NOTES

1For details on grade and package offerings screened in accordance with MIL-STD-883, refer to the Analog Devices Military Products Databook or current AD558/883B data sheet.

2D = Ceramic DIP; N = Plastic DIP; P = Plastic Leaded Chip Carrier.

REV. A

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