Quick Detail:
16-Bit, 1.5 LSB INL, 500 kSPS PulSARâ„¢ Differential ADC in MSOP/QFN
Description:
The AD7688 is a 16-bit, charge redistribution, successive approximation, analog-to-digital converter (ADC) that operates from a single 5 V power supply, VDD. It contains a low power, high speed, 16-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port.
The part also contains a low noise, wide bandwidth, short aperture delay track-and-hold circuit. On the CNV rising edge, it samples the voltage difference between IN+ and IN− pins.
The voltages on these pins usually swing in opposite phase between 0 V and REF. The reference voltage, REF, is applied externally and can be set up to the supply voltage. Its power scales linearly with throughput.
The SPI-compatible serial interface also features the ability, using the SDI input, to daisy-chain several ADCs on a single, 3-wire bus and provides an optional BUSY indicator. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate supply VIO.
The AD7688 is housed in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from −40°C to +85°C.
Applications:
16-bit resolution with no missing codes
Throughput: 500 kSPS
INL: ±0.4 LSB typ, ±1.5 LSB max (±23 ppm of FSR)
Dynamic range: 96.5 dB
SNR: 95.5 dB @ 20 kHz
THD: −118 dB @ 20 kHz
True differential analog input range
±VREF
0 V to VREF with VREF up to VDD on both inputs
No pipeline delay
Single-supply 5 V operation with
1.8 V/2.5 V/3 V/5 V logic interface
Serial interface SPI®/QSPI™/MICROWIRE™/DSP-compatible
Daisy-chain multiple ADCs and BUSY indicator
Power dissipation
3.75 mW @ 5 V/100 kSPS
3.75 μW @ 5 V/100 SPS
Standby current: 1 nA
10-lead MSOP (MSOP-8 size) and
3 mm × 3 mm QFN (LFCSP) (SOT-23 size)
Pin-for-pin compatible with AD7685, AD7686, and AD7687
APPLICATIONS
Battery-powered equipment
Data acquisitions
Instrumentation
Medical instruments
Process controls
Specifications:
|
Datasheets |
AD7688 |
|
Product Photos |
10-TFSOP, 10-MSOP |
|
Standard Package |
1 |
|
Category |
Integrated Circuits (ICs) |
|
Family |
Data Acquisition - Analog to Digital Converters (ADC) |
|
Series |
PulSAR® |
|
Packaging |
Tube |
|
Number of Bits |
16 |
|
Sampling Rate (Per Second) |
500k |
|
Data Interface |
DSP, MICROWIRE™, QSPI™, Serial, SPI™ |
|
Number of Converters |
1 |
|
Power Dissipation (Max) |
21.5mW |
|
Voltage Supply Source |
Analog and Digital |
|
Operating Temperature |
-40°C ~ 85°C |
|
Mounting Type |
Surface Mount |
|
Package / Case |
10-TFSOP, 10-MSOP (0.118", 3.00mm Width) |
|
Supplier Device Package |
10-MSOP |
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Number of Inputs and Type |
2 Single-Ended, Unipolar; 2 Single-Ended, Bipolar; 1 Differential, Unipolar; 1 Differential, Bipolar |
|
Catalog Page |
735 (CN081 PDF) |
Competitive Advantage:
Warranty :180days for all goods
Free shipping:Order over $600 win a free shipment fee:goods weight below 3Kg.
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