AD7942BRMZ Datasheet
Product Details
GENERAL DESCRIPTION
The AD7942 is a 14-bit, charge redistribution, successive
approximation PulSAR® ADC that operates from a single power supply,
VDD, between 2.3 V to 5.5 V. It contains a low power, high speed,
14-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 an
analog input, IN+, between 0 V to VREF with respect to a ground
sense, IN−. The reference voltage, VREF, is applied externally and
is set up to be the supply voltage. Its power scales linearly with
the throughput.
FEATURES
14-bit resolution with no missing codes
Throughput: 250 kSPS
INL: ±0.4 LSB typical, ±1 LSB maximum (±0.0061% of FSR)
SINAD: 85 dB at 20 kHz
THD: −100 dB at 20 kHz
Pseudo differential analog input range
0 V to VREF with VREF up to VDD
No pipeline delay
Single-supply 2.3 V to 5.5 V operation with
1.8 V/2.5 V/3 V/5 V logic interface
Proprietary serial interface
SPI-/QSPI-/MICROWIRE-/DSP-compatible1
Daisy-chaining for multiple ADCs and busy indicator
Power dissipation
1.25 mW at 2.5 V/100 kSPS, 3.6 mW at 5 V/100 kSPS
1.25 μW at 2.5 V/100 SPS
Standby current: 1 nA
10-lead package: MSOP and 3 mm × 3 mm LFCSP
Pin-for-pin compatible with the 16-bit AD7685
APPLICATIONS
Battery-powered equipment
Data acquisition
Instrumentation
Medical instruments
Process controls
GENERAL DESCRIPTION
The AD7942 is a 14-bit, charge redistribution, successive
approximation PulSAR® ADC that operates from a single power supply,
VDD, between 2.3 V to 5.5 V. It contains a low power, high speed,
14-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 an
analog input, IN+, between 0 V to VREF with respect to a ground
sense, IN−. The reference voltage, VREF, is applied externally and
is set up to be the supply voltage. Its power scales linearly with
the throughput.
FEATURES
14-bit resolution with no missing codes
Throughput: 250 kSPS
INL: ±0.4 LSB typical, ±1 LSB maximum (±0.0061% of FSR)
SINAD: 85 dB at 20 kHz
THD: −100 dB at 20 kHz
Pseudo differential analog input range
0 V to VREF with VREF up to VDD
No pipeline delay
Single-supply 2.3 V to 5.5 V operation with
1.8 V/2.5 V/3 V/5 V logic interface
Proprietary serial interface
SPI-/QSPI-/MICROWIRE-/DSP-compatible1
Daisy-chaining for multiple ADCs and busy indicator
Power dissipation
1.25 mW at 2.5 V/100 kSPS, 3.6 mW at 5 V/100 kSPS
1.25 μW at 2.5 V/100 SPS
Standby current: 1 nA
10-lead package: MSOP and 3 mm × 3 mm LFCSP
Pin-for-pin compatible with the 16-bit AD7685
APPLICATIONS
Battery-powered equipment
Data acquisition
Instrumentation
Medical instruments
Process controls
Specifications
| Attribute | Attribute Value |
|---|
| Manufacturer | Analog Devices |
| Product Category | Analog to Digital Converters (ADC) |
| Series | PulSAR® |
| Product | Analog to Digital Converters |
| Type | S/H ADC |
| Packaging | Tube Alternate Packaging |
| Unit-Weight0 | 0.005051 oz |
| Mounting-Style | SMD/SMT |
| Package-Case | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) |
| Input-Type | Pseudo-Differential |
| Operating-Temperature | -40°C ~ 85°C |
| Features | - |
| Number-of-Channels | 1 Channel |
| Supplier-Device-Package | 10-MSOP |
| Sampling-Rate-Per-Second | 250k |
| Data-Interface | SPI, DSP |
| Number-of-Bits | 14 Bits |
| Voltage-Supply-Analog | 2.3 V ~ 5.5 V |
| Voltage-Supply-Digital | 2.3 V ~ 5.5 V |
| Configuration | S/H-ADC |
| Architecture | SAR |
| Number-of-Inputs | 1 Input |
Resolution  | 14 bit |
| Reference-Type | External |
| Ratio-S-H:ADC | 1899/12/30 1:01:00 |
| Number-of-A-D-Converters | 1 |
| Pd-Power-Dissipation | 12.5 mW |
| Maximum Operating Temperature | + 85 C |
| Operating temperature range | - 40 C |
| Power-Consumption | 3.6 mW |
| Interface-Type | Serial 3-Wire 4-Wire SPI |
| SNR-Signal-to-Noise-Ratio | 85 dB |
| Package-Case | MSOP-10 |
| Gain-Error | +/- 6 LSB |
| Number-of-Converters | 1 Converter |
| Sampling-Rate | 250 kS/s |
| INL-Integral-Nonlinearity | +/- 1 LSB |
| DNL-Differential-Nonlinearity | +/- 0.7 LSB |
Descriptions
Single Channel Single ADC SAR 250ksps 14-bit Serial 10-Pin MSOP
Tube
Analog to Digital Converters - ADC 14-Bit 250KSPS PSEUDO DIFF IC
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Q: How long is your delivery time?
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Q: What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery.
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