AD5933

Data Sheet

Rev. E | Page 4 of 40

SPECIFICATIONS

VDD = 3.3 V, MCLK = 16.776 MHz, 2 V p-p output excitation voltage @ 30 kHz, 200 kΩ connected between Pin 5 and Pin 6; feedback

resistor = 200 kΩ connected between Pin 4 and Pin 5; PGA gain = ×1, unless otherwise noted.

Table 1.

Parameter

Y Version1

Unit

Test Conditions/Comments

Min

Typ

Max

SYSTEM

Impedance Range

1 K

10 M

Ω

100 Ω to 1 kΩ requires extra buffer

circuitry, see the Measuring Small

Impedances section

Total System Accuracy

0.5

%

2 V p-p output excitation voltage at

30 kHz, 200 kΩ connected between

Pin 5 and Pin 6

System Impedance Error Drift

30

ppm/°C

TRANSMIT STAGE

Output Frequency Range2

1

100

kHz

Output Frequency Resolution

0.1

Hz

<0.1 Hz resolution achievable using

DDS techniques

MCLK Frequency

16.776

MHz

Maximum system clock frequency

Internal Oscillator Frequency3

16.776

MHz

Frequency of internal clock

Internal Oscillator Temperature Coefficient

30

ppm/°C

TRANSMIT OUTPUT VOLTAGE

Range 1

AC Output Excitation Voltage4

1.98

V p-p

See Figure 4 for output voltage

distribution

DC Bias5

1.48

V

DC bias of the ac excitation signal;

see Figure 5

DC Output Impedance

200

Ω

Short-Circuit Current to Ground at VOUT

±5.8

mA

Range 2

AC Output Excitation Voltage4

0.97

V p-p

See Figure 6

DC Bias5

0.76

V

DC bias of output excitation signal;

see Figure 7

DC Output Impedance

2.4

kΩ

Short-Circuit Current to Ground at VOUT

±0.25

mA

Range 3

AC Output Excitation Voltage4

0.383

V p-p

See Figure 8

DC Bias5

0.31

V

DC bias of output excitation signal;

see Figure 9

DC Output Impedance

1

kΩ

Short-Circuit Current to Ground at VOUT

±0.20

mA

Range 4

AC Output Excitation Voltage4

0.198

V p-p

See Figure 10

DC Bias5

0.173

V

DC bias of output excitation signal.

See Figure 11

DC Output Impedance

600

Ω

Short-Circuit Current to Ground at VOUT

±0.15

mA

SYSTEM AC CHARACTERISTICS

Signal-to-Noise Ratio

60

dB

Total Harmonic Distortion

−52

dB

Spurious-Free Dynamic Range

Wide Band (0 MHz to 1 MHz)

−56

dB

Narrow Band (±5 kHz)

−85

dB