8-Bit to 18-Bit SAR ADCs … … from the Leader in High Performance Analog 2005–2006 Edition ������������������������� 2 8-Bit to 18-Bit SAR ADCs with Sample Rates up to 3 MSPS The latest additions to ADI’s ADC portfolio offer unrivaled functionality in terms of channel count and power supply voltage, optimal power/speed ratios, and the smallest packages to meet the demands of any data acquisition application, including portable, industrial, medical, wireless, and communications. Up to 2 MSPS Sample Rate, Up to 6 Channels Simultaneous Sampling, True Bipolar Input Ranges, Serial and Parallel Interfaces ������������������� ������ � �� ����� � �� ��� � ���� ���� � ��������� ������ �������������� �������������������� � � 1.6 V to 3.6 V Power Supply, Up to 200 kSPS Sample Rate, 6-Lead SOT-23 Package, 8-Lead MSOP Package � � � � � � � ���� � �� ���� � � � Up to 1.5 MSPS Sample Rate, World’s Fastest 4-Channel and 8-Channel SAR ADCs �� � � �� � ��� � � � ������������ ������ � �� ��� ������������ �������� ���� �� � � ��� ��� ��� Up to 188 kSPS Sample Rate, 2, 4, or 8 Channels, Standard, Fast, and High Speed Interface Modes ����������� ������ ������������ �������������� Up to 1 MSPS Sample Rate, Single-Channel, 10-Bit and 12-Bit Resolutions, 3 V or 5 V Power Supply �� �� � � ������������ ���������� ������������ �������������������� � ���� ������ ����� �������������� ��������� ������������� ���������� ������� ������ ���� Up to 1 MSPS Sample Rate, 2.5 V to 10 V Input Ranges, Serial and Parallel Interfaces �� ��� ���� � ������������ �������� Up to 3 MSPS Sample Rate, World’s Smallest Package, SC70, �� 3 V or 5 V Power Supply �� � Up to 3 MSPS Sample Rate, DNL, 0.5 LSB/0.75 LSB @ 12-Bit/14-Bit, Serial and ��� Parallel Interfaces ��� Up to 2 MSPS Sample Rate, Up to 16 Channels, 3 V or 5 V Power Supply 3 Single-Channel Selector Guide Generic Resolution (Bits) Throughput (kSPS) Power (mW) AD7450A 12 1,000 4 max AD7452 12 555 3.3 max AD7440 10 1,000 4 max AD7684 16 100 6 max AD7687 16 250 20 AD7688 16 500 44 Generic Resolution Throughput Power (Bits) (kSPS) (mW) AD7683 16 100 6 max AD7685 16 250 15 max AD7686 16 500 20 AD7942 14 250 12.5 max AD7946 14 500 25 max AD7451 12 1,000 4 max AD7453 12 555 3.3 max AD7457 12 100 1 max AD7441 10 1,000 4 max Generic AD7466 AD7467 AD7468 Resolution (Bits) 12 10 8 Throughput (kSPS) 200 200 200 Generic AD7641 AD7621 AD7274 AD7276 AD7476/ AD7476A AD7920 AD7475 AD7495 AD7277 AD7273 AD7477/ AD7477A AD7910 AD7278 AD7478/ AD7478A Generic AD7472 AD7492 AD7470 Resolution (Bits) 12 12 10 Power (mW) 0.3 max 0.2 max 0.2 max Resolution (Bits) 18 16 12 12 12 Throughput (kSPS) 2,000 3,000 3,000 3,000 1,000 Power (mW) 100 100 12.5 12.5 5.1 max 12 12 12 10 10 10 250 1,000 1,000 3,000 3,000 1,000 4.2 max 4.5 max 6 max 10.5 max 10.5 max 5.1 max 10 8 8 250 3,000 1,000 4.2 max 10.5 max 5.1 max Throughput (kSPS) 1,500 1,250 1,750 Power (mW) 9 max 9 max 4.5 max At 3 MSPS, New Serial ADCs Break Speed Record—in a Tiny TSOT Package The need for faster loop settling times, higher channel counts, and reduced package sizes is driving converter technology today. By combining the latest in process technology with advances in circuit design, ADI has created a new generation of solutions. The AD727x family of 12-, 10-, and 8-bit SAR ADCs features high speed and low power SAR ADCs. The parts operate from a single 2.35 V to 3.6 V power supply and feature throughput rates up to 3 MSPS. Housed in both the tiny TSOT package and the 8-lead MSOP package, their conversion process and data acquisition are controlled using CS and the serial clock, allowing the devices to interface with microprocessors or DSPs. The conversion rate is determined by the SCLK, with no pipeline delays. They also have the advantage of being pin-compatible with other popular ADCs from ADI. The AD7276/AD7277/AD7278 are pin-for-pin compatible with the AD7476 and AD7476A families of converters. 4 World’s Smallest 12-Bit, 10-Bit, and 8-Bit ADCs; SC70 Package Is Half the Size of the SOT-23 Package The 18-bit AD794x, 14-bit AD7685, 12-bit AD7476A, and 8-bit AD7478A are SAR (successive approximation) A/D converters with a maximum throughput rate of 1 MSPS that consume just 3.6 mW and conveniently come in tiny, 6-lead SC70 packages. For lower throughput rates, use the AD7910 and AD7920, very low power SAR ADCs that also come in SC70 packages. The parts are based on the AD747x core, but the throughput rates have been reduced to 250 kSPS to conserve power. Features • Fast throughput rate: 1 MSPS • Specified for VDD of 2.35 V to 5.25 V • Low power: 3.6 mW typ at 1 MSPS with 3 V supplies • Wide input bandwidth: >13 MHz • Flexible power/serial clock speed management • No pipeline delays • High speed serial interface • SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible • Standby mode: 1 A max • 6-lead SC70 and 8-lead MSOP* packages *MSOP is equivalent to SOIC. For More Flexible Reference Capability The AD7475 and AD7495, from the same family of low power, high speed SAR ADCs, are 12-bit, 1 MSPS parts with the addition of a REFIN and REFOUT pin, respectively, and a logic power supply (VDRIVE) pin. Both are packaged in 8-lead SOIC and MSOP packages; the AD7475 requires an external reference, while the AD7495 provides its own internal 2.5 V reference. For parallel interface versions, refer to the AD7470 (10-bit ADC), AD7472, and AD7492, which include an internal reference option and clock oscillator. When High Performance or Low Noise Matters, Choose ADI’s True Differential or Pseudo Differential Analog Input ADCs The AD744x, AD745x, AD768x, and AD794x are families of 10-bit to 16-bit serial ADCs with throughput rates from 100 kSPS up to 1 MSPS. For true differential inputs, complementary signals are applied to VIN() and VIN(). Alternatively, in the pseudo differential case, the VIN() is used as a dc offset. Features • Specified for VDD of 3 V and 5 V • Fully differential or pseudo differential analog inputs • Low power at max throughput rate: 3.75 mW at 1 MSPS with 3 V supplies • Wide input bandwidth: >20 MHz • Flexible power/serial clock speed management • High speed serial interface— SPI-/QSPI-/MICROWIRE-/DSP-compatible • Power-down mode: 1 A max ���������������� ������������������������� Applications • Interface to transducers • Communications • Battery-powered systems • Data acquisition systems • Motor control • Portable instrumentation 5 Multichannel Selector Guide Generic Resolution (Bits) Throughput (kSPS) Power (mW) AD7992 12 188 0.495 max ��������� Generic Resolution (Bits) Throughput (kSPS) Power (mW) AD7654 16 500 135 max AD7922 12 1,000 6 max AD7921 12 250 6 max AD7912 10 1,000 6 max AD7911 10 250 6 max ��������� Generic Resolution Throughput Power (Bits) (kSPS) (mW) AD7993 10 188 0.495 max AD7994 12 188 0.495 max ��������� ��������� ��� ��������� ��������� Generic Resolution Throughput Power (Bits) (kSPS) (mW) AD7997 10 188 0.495 max AD7998 12 188 0.495 max Generic Resolution (Bits) Throughput (kSPS) Power (mW) AD7655 16 1,000 135 max AD7924 12 1,000 6 max AD7923 12 200 3.6 max AD7914 10 1,000 6 max AD7904 8 1,000 6 max Generic Resolution (Bits) Throughput (kSPS) Power (mW) AD7928 12 1,000 6 max AD7927 12 200 3.6 max AD7918 10 1,000 6 max AD7908 8 1,000 6 max ��������� ���������� Generic Resolution (Bits) Throughput (kSPS) Power (mW) AD7490 12 1,000 5.4 max Motor Control—AD7266/AD7265—2 MSPS and 1 MSPS 12-Bit SARs The AD7266 is a simultaneous sampling, dual-channel, 12-bit SAR ADC, enabling extremely fast loop-settling time with throughput rates up to 2 MSPS. The IC’s analog input architecture and signal ranges are designed to interface with popular, off-the-shelf optical encoders which provide a low cost, high accuracy solution. Optical encoders are in servo control applications, such as robots and turning machines that require shaft feedback to the controller for precise positioning of mechanical movements. The chip consumes 27 mW of power (less than one half that of any other 2 MSPS simultaneous sampling ADC on the market). A 1 MSPS version—the AD7265—is also available. The AD7265 and AD7266 are available in 32-lead LFCSP or TQFP packages. Pricing in 1,000-piece quantities is $5.75 for the AD7265 and $7.55 for the AD7266. For more information on the AD7400 and AD2S1200 and other motor control parts, check out www.analog.com/motorcontrol. 6 Bipolar ADC Portfolio Product Selector Generic AD7898 Generic Resolution (Bits) Throughput Power (kSPS) (mW) AD7893 12 117 25 max Generic Resolution (Bits) Throughput Power (kSPS) (mW) AD7895 12 200 16 max AD7892 12 600 AD7894 14 200 20 max Resolution (Bits) Throughput Power (kSPS) (mW) 12 220 ������ ������� 22.5 max 50 max Generic Resolution Throughput Power (Bits) (kSPS) (mW) Channel Count AD7656 16 250 160 6 AD7657 14 250 160 6 AD7658 12 250 160 6 AD7891 12 500 82 max 8 ������������ Generic Resolution Throughput Power (Bits) (kSPS) (mW) Channel Count AD7321 13 500 12 2 AD7322 13 1,000 12 2 AD7323 13 500 12 4 AD7324 13 1,000 12 4 AD7327 13 500 12 8 AD7328 13 1,000 12 8 AD7329 13 400 12 8 AD7890 12 100 30 max 8 Generic Resolution (Bits) Throughput Power (kSPS) (mW) AD7899 14 400 80 max AD7328: True Bipolar Input iCMOS Multichannel ADC Has High Impedance Inputs and Software-Programmable AIN Ranges from 2.5 V to 10 V The AD7328 has high voltage devices on the front end, which can accommodate input voltage ranges from ±2.5 V to ±10 V, while providing high dc and ac input impedances. The analog input channels can be configured as singleended, fully differential, or pseudo differential. Dedicated control register bits are used to configure the analog inputs. The ADCs contain a channel sequencer, allowing automatic conversions on a group of preprogrammed analog input channels. AD7656—High Accuracy, Simultaneous Sampling iCMOS ADC The AD7656 is highly integrated with six 16-bit successive approximation ADCs featuring fast throughput rates up to 250 kSPS per channel, and a 2.5 V internal reference housed in one package. The AD7656 contains low noise, wide bandwidth track-and-hold amplifiers that can handle input frequencies up to 8 MHz. Independent simultaneous sampling can be performed on the three ADC pairs. The AD7656 has both a high speed parallel and serial interface. �� 7 AD799x I2C Devices—ADCs for System Monitoring and Control Features • 12-bit, 10-bit ADCs with 188 kSPS in high speed I2C® interface ������������� ������������� ����� ����� ������� ������� ������� ������� ������������������� ���������������������� • 2, 4, and 8 single-ended analog input channels • Specified for VDD of 2.7 V to 5.5 V • Low power consumption: <1 mW • On-chip channel sequencer • Automatic cycle mode • I2C-compatible serial interface Applications • Standard, fast, and high speed modes • Channel monitoring • Out-of-range indicator/alert function • Battery and temperature measurements • Pin-selectable addressing via AS • Medical instruments • Shutdown mode: 1 A max • Voltage monitoring • MSOP and TSSOP packages The AD799x is a family of multichannel, 12-bit and 10-bit successive approximation ADCs with a fully I2C- and SMBus-compatible interface. These parts operate from a single 2.7 V to 5.5 V power supply and feature a conversion time of 2 s. The family includes versions with two, four, and eight single-ended analog input channels in 10-lead MSOP, 16-lead TSSOP, and 20-lead TSSOP packages. The I2C-compatible interface supports standard, fast, and high speed modes. AD793x—World’s Fastest Multiplexed SAR Converters The AD793x is a family of multichannel, 12-bit and 10-bit ADCs with throughput rates to 1.5 MSPS. Data transfers are made over a parallel bus, and the parts operate from a single 2.7 V to 5.25 V power supply. Features • 10-bit and 12-bit resolutions • Fast throughput rate: up to 1.5 MSPS • Specified for VDD of 2.7 V to 5.25 V • Low power: 8 mW max at 1.5 MSPS with 3 V supplies • 4 and 8 analog input channels with a sequencer • Software-configurable analog inputs • Accurate on-chip 2.5 V reference Generic Resolution (Bits) • Wide input bandwidth: >20 MHz Throughput (kSPS) Channels AD7938/AD7938-6 12 1,500/600 8 AD7934/AD7934-6 12 1,500/600 4 • High speed parallel interface— word/byte modes AD7939 10 1,500 8 • Full shutdown mode: 1 A max AD7933 10 1,500 4 • TSSOP, TQFP, and LFCSP packages • No pipeline delays 8 Advance Your Designs with Our Broad Range of PulSAR® ADCs Some designs demand the highest performance ADCs available. For those there’s only one place to go—Analog Devices. Our broad portfolio of 16-bit and 18-bit SAR ADCs delivers the highest performance with less power, smaller sizes, and lower overall systems costs. AD7621—Unequalled SAR ADC Precision and Speed With the AD7621, ADI sets a speed record of 3 MSPS, without sacrificing precision: the device offers 1 LSB of INL and DNL, plus 90 dB SNR. To achieve these speed and accuracy levels, ADI’s design engineers migrated from a 0.6 m process to a 0.25 m process, setting the stage for the fast transistors that make up the quick comparator and fast digital logic. The sampling circuitry at the front of the ADC had to provide enough bandwidth and be ultralow in noise to support the 3 MSPS sampling rate and the 90 dB SNR spec, while the comparator had to settle very quickly (at least 16 times faster than the ADC itself) to make the right bit decisions that ensure the high accuracy. These advances result in numerous benefits—designers can use fewer ADCs per channel, and therefore lower their overall cost per channel, and the higher accuracy decreases the need for an expensive PGA in front of the ADC, which also results in a lower cost per channel. Features • 3 MSPS • 90 dB SNR • 16 bits, no missing codes • Single-supply 2.5 V • 1 LSB INL/DNL • No pipeline delay • Low power: 100 mW typ @ 3 MSPS • 48-lead LFCSP packages PulSAR Selection Table 1 2 Part Number Resolution (Bits) Sampling Rate (kHz) Interface Channels AD7641 AD7643 AD7674 AD7679 AD7678 AD7621 AD7623 AD7653 AD7667 AD7671 AD7677 AD76542 AD76552 AD7650 AD7664 AD7665 AD7686 AD7688 AD7652 AD7666 AD7676 AD7946 AD7656 AD7663 AD7685 AD7687 AD7942 AD974 AD976A AD977A AD7651 AD7660 AD7661 AD7675 AD7680 AD7683 AD7684 18 18 18 18 18 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 14 16 16 16 16 14 16 16 16 16 16 16 16 16 16 16 2,000 1,250 800 570 100 3,000 1,333 1,000 1,000 1,000 1,000 1,000 1,000 570 570 570 500 500 500 500 500 500 250 250 250 250 250 200 200 200 100 100 100 100 100 100 100 18P, S 18P, S 18P, S 18P, S 18P, S 16P, S 16P, S 16P, S 16P, S 16P, S 16P, S 16P, S 16P, S 16P, S 16P, S 16P, S S S 16P, S 16P, S 16P, S S 16P, S 16P, S S S S S 16P S 16P, S 16P, S 16P, S 16P, S S S S 1 1 1 1 1 1 1 1 1 1 1 4 4 1 1 1 1 1 1 1 1 1 6 1 1 1 1 4 1 1 1 1 1 1 1 1 1 Voltage Supply 2.5 V (3 V, 5 V logic) 2.5 V (3 V, 5 V logic) 5 V (3 V, 5 V logic) 5 V (3 V, 5 V logic) 5 V (3 V, 5 V logic) 2.5 V (3 V, 5 V logic) 2.5 V (3 V, 5 V logic) 5 V (3 V, 5 V logic) 5 V (3 V, 5 V logic) 5 V (3 V, 5 V logic) 5 V (3 V, 5 V logic) 5 V (3 V, 5 V logic) 5 V (3 V, 5 V logic) 5 V (3 V, 5 V logic) 5 V (3 V, 5 V logic) 5 V (3 V, 5 V logic) 2.7 V to 5 V 2.7 V to 5 V 5 V (3 V, 5 V logic) 5 V (3 V, 5 V logic) 5 V (3 V, 5 V logic) 2.7 V to 5 V 5 V (3 V, 5 V logic) 5 V (3 V, 5 V logic) 2.7 V to 5 V 2.7 V to 5 V 2.7 V to 5 V 5V 5V 5V 5 V (3 V, 5 V logic) 5 V (3 V, 5 V logic) 5 V (3 V, 5 V logic) 5 V (3 V, 5 V logic) 3 V to 5 V 2.7 V to 5 V 2.7 V to 5 V Power (mW) Max Voltage Reference 100 typ 100 typ 126 103 26 100 typ 100 typ 145 145 125 130 135 135 115 115 107 20 typ 44 typ 90 90 74 25 60 typ 41 15 20 typ 12.5 120 100 100 45 25 45 25 10 6 6 Yes Yes Buffer only Buffer only Buffer only Yes Yes Yes Yes No No No No No No No No No Yes Yes No No Yes No No No No Yes Yes Yes Yes No Yes No No No No Input range: differential implies that +IN and –IN can vary from –0.1 to VDD (or within 2 V of VDD) when referred to AGND. Pseudo differential implies that the –IN input can only vary ±100 mV typically. 2 2 channel simultaneous sampling. Input Range1 (V) VREF differential VREF differential 5 differential 5 differential 5 differential VREF differential VREF differential 0 to 2.5 0 to 2.5 2.5, 5, 10, +2.5, +5, +10 2.5 @ 2.5 0 to 5 0 to 5 0 to 2.5 0 to 2.5 2.5, 5, 10, +2.5, +5, +10 0 to VREF (pseudo differential) VREF differential 0 to 2.5 0 to 2.5 2.5 @ 2.5 0 to VREF (pseudo differential) 5, 10 2.5, 5, 10, +2.5, +5, +10 0 to VREF (pseudo differential) VREF differential 0 to VREF (pseudo differential) +4, +5, 10 10 3.3, 5, 10, +4, +5, +10 0 to 2.5 0 to 2.5 0 to 2.5 2.5 @ 2.5 0 to VDD 0 to VREF VREF 9 AD7641: World’s Fastest SAR ADC at 18-Bits and 2 MSPS The AD7641 has raised the top speed for 18-bit SAR ADCs from 800 kSPS to 2 MSPS. Typical INL is ± 2.5 LSB with 18 bits no missing codes guaranteed over temperature. The AD7641 also offers 90 dB of SNR and –100 dB of THD, both specified at 100 kHz. This combination of outstanding ac and dc performance will attract customers needing to convert fast moving signals to the highest level of accuracy. Medical imaging, high speed data acquisition, and automatic test equipment are just a few of the applications that take advantage of the AD7641’s rare combination of accuracy and speed. Its 4 increase in resolution over 16-bit ADCs will allow most customers to omit expensive programmable gain amplifiers from their systems. Other features include: serial and parallel interfaces, 2.5 V internal reference, fully differential inputs, and three-way, power-down capability. The AD7641 is available in both 48-lead LQFP and 48-lead chip scale packages. No Missing Codes DNL (LSB) INL (LSB) SNR THD 18 18 18 18 18 16 16 15 15 16 16 16 15 15 16 16 16 16 15 15 16 14 15 16 16 16 14 15, 16 15, 16 15, 16 15 16 15 16 15 @ 5 V, 16 @ 3 V 15, 16 15, 16 N/A N/A N/A N/A N/A 1 1 N/A N/A N/A 1 N/A N/A N/A –1.0/+1.5 N/A N/A N/A N/A N/A N/A –0.7/+0.7 N/A N/A N/A N/A –0.7/+0.7 –2/+3, –1/+1.5 –2/+3, –1/+1.5, 2 typ –2/+3, –1/+1.5, 2 typ N/A –1.0/+1.75 N/A N/A –0.9, +2.5 @ 3 V, 2.5 @ 5 V N/A N/A 3 3 2.5 2.5 2.5 2 2 6 2.5 2.5 1 3.5 6 6 2.5 2.5 2.5 1.5 6 2.5 1 1 4 3 2.5 1.5 1 3, 2 3, 2, 3 typ 3, 2, 3 typ 6 3 2.5 1.5 4 6, 3 6, 3 93 typ 93 typ 100 100 100 88 88 86 typ 90 typ 89 92 88 86 typ 86 typ 90 typ 89 92 typ 92 86 typ 90 typ 92 83 83 89 92 typ 92 83 83, 85 83, 85 83, 85 86 typ 87 90 typ 92 85 @ 3 V, 84 @ 5 V 90, 91 90, 91 –100 typ –100 typ –110 typ –110 typ –110 typ –100 typ –100 typ –98 typ –100 typ –96 –103.5 –100 typ –96 typ –98 typ –100 typ –100 typ 100 typ 100 typ –98 typ –100 typ –103.5 –100 typ –97 typ –100 typ 100 typ 100 typ –100 typ –90/–96 –90/–96 –90/–96 –98 typ –96 –100 typ –103.5 –95 typ –100/–106 –100/–106 Package 48-lead LQFP, LFCSP 48-lead LQFP, LFCSP 48-lead LQFP, LFCSP 48-lead LQFP, LFCSP 48-lead LQFP, LFCSP 48-lead LQFP, LFCSP 48-lead LQFP, LFCSP 48-lead LQFP, LFCSP 48-lead LQFP, LFCSP 48-lead LQFP, LFCSP 48-lead LQFP, LFCSP 48-lead LQFP, LFCSP 48-lead LQFP, LFCSP 48-lead LQFP, LFCSP 48-lead LQFP, LFCSP 48-lead LQFP, LFCSP 10-lead MSOP 10-lead MSOP 48-lead LQFP, LFCSP 48-lead LQFP, LFCSP 48-lead LQFP, LFCSP 10-lead MSOP 64-LQFP 48-lead LQFP, LFCSP 10-lead MSOP 10-lead MSOP 10-lead MSOP 28-lead SSOP 28-lead SOIC, PDIP 20-lead SSOP 48-lead LQFP, LFCSP 48-lead LQFP, LFCSP 48-lead LQFP, LFCSP 48-lead LQFP, LFCSP 6-lead SOT-23 8-lead MSOP 8-lead MSOP Price @ 1k ($U.S.) 32.95 29.95 27.95 25.60 19.20 29.95 24.95 11.50 23.50 21.95 32.95 15.42 9.45 7.50 18.65 19.00 12.00 14.95 9.45 18.00 24.95 7.37 17.00 12.00 8.00 8.95 4.75 26.40 20.73 20.73 7.45 7.91 8.95 12.00 6.00 6.50 6.50 Part Number Resolution (Bits) Data Bus Interface Single-Channel True Differential and Pseudo Differential ADCs AD7450A 12 Serial AD7452 12 Serial AD7440 10 Serial AD7451 12 Serial AD7453 12 Serial AD7457 12 Serial AD7441 10 Serial Single-Ended Low Power ADC AD7466 12 Serial AD7467 10 Serial AD7468 8 Serial AD7274 12 Serial AD7276 12 Serial AD7476A 12 Serial AD7920 12 Serial AD7475 12 Serial AD7495 12 Serial AD7277 10 Serial AD7273 10 Serial AD7477A 10 Serial AD7910 10 Serial AD7278 8 Serial AD7478A 8 Serial AD7472 12 Parallel AD7492 12 Parallel AD7470 10 Parallel Multichannel Parallel ADCs AD7938 12 Parallel AD7938-6 12 Parallel AD7939 10 Parallel AD7934 12 Parallel AD7934-6 12 Parallel AD7933 10 Parallel Multichannel I2C ADCs AD7992 12 I2C AD7993 10 I2C AD7994 12 I2C AD7997 10 I2C AD7998 12 I2C Multichannel SPI QSPI MICROWIRE DSP ADCs AD7922 12 Serial AD7921 12 Serial AD7912 10 Serial AD7911 10 Serial AD7924 12 Serial AD7923 12 Serial AD7914 10 Serial AD7904 8 Serial AD7928 12 Serial AD7927 12 Serial AD7918 10 Serial AD7908 8 Serial AD7490 12 Serial Bipolar, Serial/Parallel, and Parallel ADCs AD7893 12 Serial AD7895 12 Serial AD7894 14 Serial AD7898 12 Serial AD7321 13 Serial AD7322 13 Serial AD7323 13 Serial AD7324 13 Serial AD7327 13 Serial AD7328 13 Serial AD7329 13 Serial AD7890 12 Serial AD7899 14 Parallel AD7892 12 Serial/Parallel AD7891 12 Serial/Parallel AD7656 16 Serial/Parallel AD7657 14 Serial/Parallel AD7658 12 Serial/Parallel Simultaneous Sampling ADCs AD7862 12 Parallel AD7863 14 Parallel AD7864 12 Parallel AD7865 14 Parallel AD7866 12 Serial AD7265 12 Serial AD7266 12 Serial Sample Rate (kSPS) Number of Channels Supply Range Power (mW) Power-Down Mode 1,000 555 1,000 1,000 555 100 1,000 1 1 1 1 1 1 1 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 4 max 3.3 max 4 max 4 max 3.3 max 1 max 4 max Yes Yes Yes Yes Yes Yes Yes 200 200 100 3,000 3,000 1,000 250 1,000 1,000 3,000 3,000 1,000 250 3,000 1,000 1,500 1,250 1,750 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1.6 V to 3.6 V 1.6 V to 3.6 V 1.6 V to 3.6 V 2.35 V to 3.6 V 2.35 V to 3.6 V 2.35 V to 5.25 V 2.35 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 2.35 V to 3.6 V 2.35 V to 3.6 V 2.35 V to 5.25 V 2.35 V to 5.25 V 2.35 V to 3.6 V 2.35 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 0.3 max 0.21 max 0.2 max 12.5 12.5 5.1 max 4.2 max 4.5 max 6 max 10.5 10.5 5.1 max 4.2 max 10.5 5.1 max 4.5 max 9 max 4.5 max Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes 1,500 625 1,500 1,500 625 1,500 8 8 8 4 4 4 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 4.5 3 4.5 4.5 3 4.5 Yes Yes Yes Yes Yes Yes 188 188 188 188 188 2 4 4 8 8 2.7 V to 5.5 V 2.7 V to 5.5 V 2.7 V to 5.5 V 2.7 V to 5.5 V 2.7 V to 5.5 V 0.495 max 0.495 max 0.495 max 0.495 max 0.495 max Yes Yes Yes Yes Yes 1,000 250 1,000 250 1,000 200 1,000 1,000 1,000 200 1,000 1,000 1,000 2 2 2 2 4 4 4 4 8 8 8 8 16 2.35 V to 5.25 V 2.35 V to 5.25 V 2.35 V to 5.25 V 2.35 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 6 max 6 max 6 max 6 max 6 max 3.6 max 6 max 6 max 6 max 3.6 max 6 max 6 max 5.4 max Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes 117 200 200 220 500 1,000 500 1,000 500 1,000 250 100 400 600 500 250 250 250 1 1 1 1 2 2 4 4 8 8 8 8 1 1 8 6 6 6 Single 5 V supply Single 5 V supply Single 5 V supply Single 5 V supply 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V 2.7 V to 5.25 V Single 5 V supply Single 5 V supply Single 5 V supply Single 5 V supply 4.75 V to 5.25 V 4.75 V to 5.25 V 4.75 V to 5.25 V 25 max 16 max 20 max 22.5 max 12 12 12 12 12 12 12 30 max 80 max 60 max 82 max 160 160 160 No No No No Yes Yes Yes Yes Yes Yes Yes No No No No Yes Yes Yes 250 175 520 350 1,000/666 1,000 2,000 2 2 4 4 2 Dual 3-channel Dual 3-channel Single 5 V supply Single 5 V supply Single 5 V supply Single 5 V supply 2.7 V to 5.5 V 2.7 V to 5.25 V 2.7 V to 5.25 V 60 max 45 max 90 max 100 max 11.4 max 7 27 Yes Yes No No Yes Yes Yes Analog Input Range Reference Price @ 1k ($U.S.) Pin Count and Package Features 2 VREF 2 VREF 2 VREF VREF VREF VREF VREF 2.5 V ext 2.5 V ext 2.5 V ext 2.5 V ext 2.5 V ext 2.5 V ext 2.5 V ext 4.30 2.95 2.50 4.25 2.95 2.05 2.50 8-lead SOT-23 and MSOP 8-lead SOT-23 8-lead SOT-23 and MSOP 8-lead SOT-23 and MSOP 8-lead SOT-23 8-lead SOT-23 8-lead SOT-23 and MSOP Differential input, 1 MSPS, 12-bit ADC Differential input, 555 kSPS, 12-bit ADC Differential input, 1 MSPS, 10-bit ADC Pseudo differential, 1 MSPS, 12-bit ADC Pseudo differential, 555 kSPS, 12-bit ADC Pseudo differential, 100 kSPS, 12-bit ADC Pseudo differential, 1 MSPS, 10-bit ADC 0 V to VDD 0 V to VDD 0 V to VDD 0 V to VREF 0 V to VDD 0 V to VDD 0 V to VDD 0 V to REFIN 0 V to 2.5 V 0 V to VDD 0 V to VREF 0 V to VDD 0 V to VDD 0 V to VDD 0 V to VDD 0 V to REFIN 0 V to 2.5 V 0 V to REFIN VDD VDD VDD 1.2 V to VDD ext VDD VDD VDD 2.5 V ext 2.5 V int VDD 1.2 V to VDD ext VDD VDD VDD VDD 2.5 V ext 2.5 V int 2.5 V ext 2.35 1.90 1.15 6.50 6.25 4.00 2.05 4.25 5.19 3.60 3.75 2.50 1.75 1.85 0.95 6.25 6.89 3.00 6-lead SOT-23 and 8-lead MSOP 6-lead SOT-23 and 8-lead MSOP 6-lead SOT-23 and 8-lead MSOP 8-lead TSOT and 8-lead MSOP 6-lead TSOT and 8-lead MSOP 6-lead SC70 and 8-lead MSOP 6-lead SC70 and 8-lead MSOP 8-lead MSOP and SOIC 8-lead MSOP and SOIC 6-lead TSOT and 8-lead MSOP 8-lead TSOT and 8-lead MSOP 6-lead SC70 and 8-lead MSOP 6-lead SC70 and 8-lead MSOP 6-lead TSOT and 8-lead MSOP 6-lead SC70 and 8-lead MSOP 24-lead SOIC and TSSOP 24-lead TSSOP and 24-lead SOIC 24-lead SOIC and TSSOP 1.6 V, micropower, 12-bit ADC 1.6 V, micropower, 10-bit ADC 1.6 V, micropower, 8-bit ADC 12-bit, 3 MSPS SAR ADC with external VREF 12-bit, 3 MSPS SAR ADC 2.35 V to 5.25 V, 1 MSPS, 12-bit ADC Low power, 250 kSPS, 12-bit ADC Low power, 1 MSPS, 12-bit ADC Low power, 1 MSPS, 12-bit ADC with internal VREF 10-bit, 3 MSPS SAR ADC 10-bit, 3 MSPS SAR ADC with external VREF 2.35 V to 5.25 V, 1 MSPS, 10-bit ADC Low power, 250 kSPS, 10-bit ADC 8-bit, 3 MSPS SAR ADC 2.35 V to 5.25 V, 1 MSPS, 8-bit ADC 1.5 MSPS, 4.5 mW, 12-bit parallel ADC 1.25 MSPS, 16 mW, IntREF and CLK, 12-bit parallel ADC 1.75 MSPS, 4.5 mW, 10-bit parallel ADC 0 to VREF, 0 V to 2 VREF 0 to VREF, 0 V to 2 VREF 0 to VREF, 0 V to 2 VREF 0 to VREF, 0 V to 2 VREF 0 to VREF, 0 V to 2 VREF 0 to VREF, 0 V to 2 VREF 2.5 V ext/int 2.5 V ext/int 2.5 V ext/int 2.5 V ext/int 2.5 V ext/int 2.5 V ext/int 7.35 4.85 3.75 7.10 4.60 3.50 32-lead TQFP and LFCSP 32-lead TQFP and LFCSP 32-lead TQFP and LFCSP 28-lead TSSOP 28-lead TSSOP 28-lead TSSOP 8-channel, 1.5 MSPS, 12-bit parallel ADC with a sequencer 8-channel, 625 kSPS, 12-bit parallel ADC with a sequencer 8-channel, 1.5 MSPS, 10-bit parallel ADC with a sequencer 4-channel, 1.5 MSPS, 12-bit parallel ADC with a sequencer 4-channel, 625 kSPS, 12-bit parallel ADC with a sequencer 4-channel, 1.5 MSPS, 10-bit parallel ADC with a sequencer 0 V to REFIN 0 V to REFIN 0 V to REFIN 0 V to REFIN 0 V to REFIN 0 V to VDD ext 0 V to VDD ext 0 V to VDD ext 0 V to VDD ext 0 V to VDD ext 3.00 1.99 3.50 2.25 3.75 10-lead MSOP 16-lead TSSOP 16-lead TSSOP 20-lead TSSOP 20-lead TSSOP 2-channel, 12-bit ADC with I2C-compatible interface 4-channel, 10-bit ADC with I2C-compatible interface 4-channel, 12-bit ADC with I2C-compatible interface 8-channel, 10-bit ADC with I2C-compatible interface 8-channel, 12-bit ADC with I2C-compatible interface 0 V to VDD 0 V to VDD 0 V to VDD 0 V to VDD 0 V to REFIN 0 V to REFIN 0 V to REFIN 0 V to REFIN 0 V to REFIN 0 V to REFIN 0 V to REFIN 0 V to REFIN 0 V to REF VDD VDD VDD VDD 2.5 V ext 2.5 V ext 2.5 V ext 2.5 V ext 2.5 V ext 2.5 V ext 2.5 V ext 2.5 V ext 2.5 V ext 4.25 2.30 2.75 2.00 4.50 2.55 3.00 1.55 4.75 2.80 3.25 1.85 5.95 8-lead TSOT and 8-lead MSOP 8-lead TSOT and 8-lead MSOP 8-lead TSOT and 8-lead MSOP 8-lead TSOT and 8-lead MSOP 16-lead TSSOP 16-lead TSSOP 16-lead TSSOP 16-lead TSSOP 20-lead TSSOP 20-lead TSSOP 20-lead TSSOP 20-lead TSSOP 28-lead TSSOP and 32-lead LFCSP 12-bit, 2-channel, 1 MSPS ADC 12-bit, 2-channel, 250 kSPS ADC 10-bit, 2-channel, 1 MSPS ADC 10-bit, 2-channel, 250 kSPS ADC 4-channel, 1 MSPS, 12-bit ADC with sequencer 4-channel, 200 kSPS, 12-bit ADC with sequencer 4-channel, 1 MSPS, 10-bit ADC with sequencer 4-channel, 1 MSPS, 8-bit ADC with sequencer 8-channel, 1 MSPS, 12-bit ADC with sequencer 8-channel, 200 kSPS, 12-bit ADC with sequencer 8-channel, 1 MSPS, 10-bit ADC with sequencer 8-channel, 1 MSPS, 8-bit ADC with sequencer 16-channel, 1 MSPS, 12-bit ADC with sequencer 10 V, 2.5 V, 0 V to +5 V, 0 V to +2.5 V 2.5 V ext 2.5 V ext 2.5 V ext 2.5 V ext 2.5 V ext/int 2.5 V ext/int 2.5 V ext/int 2.5 V ext/int 2.5 V ext/int 2.5 V ext/int 2.5 V ext/int 2.5 V ext/int 2.5 V ext/int 2.5 V ext/int 2.5 V ext/int 2.5 V ext/int 2.5 V ext/int 2.5 V ext/int 9.00 4.95 9.90 4.97 3.00 4.75 3.62 5.75 3.94 6.25 3.90 10.20 9.90 12.75 14.75 17.00 12.95 10.60 8-lead DIP and SOIC 8-lead DIP and SOIC 8-lead SOIC 8-lead SOIC 14-lead TSSOP 14-lead TSSOP 16-lead TSSOP 16-lead TSSOP 20-lead TSSOP 20-lead TSSOP 24-lead TSSOP 24-lead DIP and SOIC 28-lead SOIC and SSOP 24-lead DIP and SOIC 44-lead MQFP and PLCC 64-lead LQFP 64-lead LQFP 64-lead LQFP LC2MOS 12-bit, serial, 117 kSPS, 6 ms ADC 5 V, 12-bit, serial, 200 kSPS, 3.8 ms ADC 5 V, 14-bit, serial, 200 kSPS, 5 ms ADC 5 V, 12-bit, serial, 220 kSPS ADC iCMOS™ 12-bit plus sign, 250 kSPS, bipolar 8-channel ADC iCMOS 12-bit plus sign, 250 kSPS, bipolar 8-channel ADC iCMOS 12-bit plus sign, 250 kSPS, bipolar 4-channel ADC iCMOS 12-bit plus sign, 250 kSPS, bipolar 4-channel ADC iCMOS 12-bit plus sign, 250 kSPS, bipolar 2-channel ADC iCMOS 12-bit plus sign, 250 kSPS, bipolar 2-channel ADC iCMOS 12-bit plus sign, 250 kSPS, bipolar ADC with mux out LC2MOS 8-channel, 12-bit, serial, data acquisition system 5 V single-supply, 14-bit, 400 kSPS ADC LC2MOS single-supply, 12-bit, 600 kSPS ADC LC2MOS 8-channel, 12-bit, high speed, data acquisition system iCMOS 250 kSPS, 6-channel, simultaneous sampling, bipolar 16-bit ADC iCMOS 250 kSPS, 6-channel, simultaneous sampling, bipolar 14-bit ADC iCMOS 250 kSPS, 6-channel, simultaneous sampling, bipolar 12-bit ADC 2.5 V ext/int 2.5 V ext/int 2.5 V ext/int 2.5 V ext/int 2.5 V ext/int 2.5 V ext/int 2.5 V ext/int 11.00 14.50 13.65 14.85 6.80 5.75 7.55 28-lead SSOP, SOIC, and DIP 28-lead SOIC and SSOP 44-lead MQFP 44-lead PQFP 16-lead TSSOP 32-lead TQFP and LFCSP 32-lead TQFP and LFCSP Simultaneous sampling, dual, 250 kSPS, 12-bit ADC Simultaneous sampling, dual, 175 kSPS, 14-bit ADC 4-channel, simultaneous sampling, high speed, 12-bit ADC 4-channel, simultaneous sampling, fast, 14-bit ADC Dual, 1 MSPS, 12-bit, 2-channel SAR ADC, serial interface Differential input, dual 1 MSPS, 12-bit, 3-channel SAR ADC Differential input, dual 2 MSPS, 12-bit, 3-channel SAR ADC 10 V, 2.5 V, 0 V to +2.5 V 10 V, 2.5 V, 0 V to +2.5 V 10 V, 2.5 V 10 V, 5 V, 2.5 V, 0 V to 10 V 10 V, 5 V, 2.5 V, 0 V to 10 V 10 V, 5 V, 2.5 V, 0 V to 10 V 10 V, 5 V, 2.5 V, 0 V to 10 V 10 V, 5 V, 2.5 V, 0 V to 10 V 10 V, 5 V, 2.5 V, 0 V to 10 V 10 V, 5 V, 2.5 V, 0 V to 10 V 10 V, 0 V to +4 V, 0 V to +2.5 V 10 V, 5 V, 2.5 V, 0 V to +2.5 V, 0 V to +5 V 10 V, 5 V, 0 V to +2.5 V, 2.5 V 10 V, 5 V, 2.5 V, 0 V to +2.5 V, 0 V to +5 V 4 VREF, 2 VREF 4 VREF, 2 VREF 4 VREF, 2 VREF 10 V, 2.5 V, +2.5 V 10 V, 2.5 V, +2.5 V 5 V, 10 V, 2.5 V, +2.5 V, +5 V 5 V, 10 V, 0 V to +2.5 V, 0 V to +5 V, 2.5 V 0 to VREF, 0 V to 2 VREF 0 to VREF, 0 V to 2 VREF 0 to VREF, 0 V to 2 VREF Analog Devices, Inc. Worldwide Headquarters Analog Devices, Inc. One Technology Way P.O. Box 9106 Norwood, MA 02062-9106 U.S.A. Tel: 781.329.4700 (800.262.5643, U.S.A. only) Fax: 781.461.3113 One Small Package with Many Resolution Options Analog Devices’ ADC portfolio includes pin-compatible 8-bit to 16-bit ADCs, in a tiny SOT-23 package. The most flexible and fastest way to product upgrades is to simply replace the A/D converter with a higher resolution pin-for-pin replacement. This flexibility also allows the manufacturer to traverse the price/performance curve with just one board design. ADI has several upgrade paths available to designers to accomplish jumps in performance in the shortest time possible. Our family of AD747x and AD746x 8-bit to 12-bit ADCs are not only pin-compatible with each other but also with the smallest 14-bit and 16-bit ADCs available on the market—the AD7940 and AD7680. These high performance ADCs combine the smallest package size—SOT-23-6—with the lowest power dissipation. The AD746x family dissipates just 0.15 mW of power at 100 kSPS while operating from a 1.8 V supply. The AD747x, AD7940, and AD7680 ADCs can operate from a 2.5 V to 5.5 V supply. Analog Devices, Inc. Europe Headquarters Analog Devices SA 17-19 rue Georges Besse Antony, 92160 France Tel: 33.1.46.74.45.00 Fax: 33.1.46.74.45.01 This group of ADCs offers small packages, low power, and affordable pricing with the added benefit of pin-for-pin compatibility to make designing with ADI your first choice. Generic Resolution (Bits) Data Rate (kSPS) Power Supply Package AD7278 8 3,000 2.35 V to 3.6 V 6-lead SOT-23 AD7478 8 1,000 2.35 V to 5.25 V 6-lead SOT-23 AD7468 8 200 1.8 V to 3.6 V 6-lead SOT-23 AD7277 10 3,000 2.35 V to 3.6 V 6-lead SOT-23 AD7477 10 1,000 2.35 V to 5.25 V 6-lead SOT-23 AD7467 10 200 1.8 V to 3.6 V 6-lead SOT-23 AD7276 12 3,000 2.35 V to 3.6 V 6-lead SOT-23 AD7476 12 1,000 2.35 V to 5.25 V 6-lead SOT-23 AD7466 12 200 1.8 V to 3.6 V 6-lead SOT-23 AD7940 14 100 2.35 V to 5.25 V 6-lead SOT-23 AD7680 16 100 2.35 V to 5.25 V 6-lead SOT-23 Analog Devices, Inc. Japan Headquarters Analog Devices, KK New Pier Takeshiba South Tower Building 1-16-1 Kaigan, Minato-ku, Tokyo, 105-6891 Japan Tel: 813.5402.8200 Fax: 813.5402.1064 Analog Devices, Inc. Southeast Asia Headquarters Analog Devices 22/F One Corporate Avenue 222 Hu Bin Road Shanghai, 200021 China Tel: 86.21.5150.3000 Fax: 86.21.5150.3222 Evaluation Boards Evaluation boards are available on most ADCs. These are complete self-contained evaluation tools for these precision converters. These boards essentially allow development engineers to evaluate the features, functions, and performance of the devices in determining suitability for the end-user application. Evaluation boards interface to the PC via the parallel printer port and come with a suite of software designed to allow control of all programmable functions. � � � � � � � � � � � � � � � � � � � � � � � � � © 2005 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Printed in the U.S.A. BR04334-5-7/05(B) � � � � � � � �� � � � �� � � �� � � � �� � �� � � � � � � � � � � �