AD5934

Rev. 0 | Page 3 of 32

SPECIFICATIONS

Test conditions unless otherwise stated: 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.

Table 2.

Y Version1

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

SYSTEM

Impedance Range

0.001

10

MΩ

Total System Accuracy

0.5

%

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.

TRANSMIT OUTPUT VOLTAGE

Range 1

AC Output Excitation Voltage3

1.98

V p-p

Refer to Figure 4 for output voltage

distribution.

DC Bias4

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 Voltage3

0.97

V p-p

See Figure 6.

DC Bias4

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 Voltage3

0.383

V p-p

See Figure 8.

DC Bias4

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 Voltage3

0.198

V p-p

See Figure 10.

DC Bias4

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

Short-Circuit Current to Ground

±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

Narrowband (±5 kHz)

−85

dB